66th United States Congress

The 66th United States Congress was a meeting of the legislative branch of the United States federal government, comprising the United States Senate and the United States House of Representatives. It met in Washington, D.C., from March 4, 1919, to March 4, 1921, during the last two years of Woodrow Wilson's presidency. The apportionment of seats in the House of Representatives was based on the 1910 United States census.

The Republicans won majorities in both the House and the Senate, thus taking control of both chambers.

This is the last congress to have no female members of congress in the House of Representatives, and thus the last time there was an all-male congress (several subsequent congresses, up to the 96th Congress, would have periods with no women in the Senate but several in the House).

Major legislation

 * June 30, 1919: Navy Appropriations Act of 1919
 * June 30, 1919: Hastings Amendment
 * July 11, 1919: Anti-Lobbying Act of 1919
 * July 11, 1919: Army Appropriations Act of 1919
 * July 19, 1919: Sundry Civil Expenses Appropriations Act
 * October 18, 1919: National Prohibition Act (Volstead Act), ch. 85,
 * October 22, 1919: Underground Water Act of 1919
 * October 29, 1919: National Motor Vehicle Theft Act (Dyer Act)
 * November 4, 1919: Deficiency Act of 1919
 * November 6, 1919: Indian Soldier Act of 1919
 * December 24, 1919: Edge Act of 1919
 * February 25, 1920: Oil Leasing Act of 1920
 * February 25, 1920: Mineral Leasing Act of 1920 (Smoot-Sinnot Act), ch. 85,
 * February 25, 1920: Pipeline Rights-of-Way Act
 * February 25, 1920: Sale of Water For Miscellaneous Purposes Act
 * February 28, 1920: Esch-Cummins Act, ,
 * March 9, 1920: Suits in Admiralty Act of 1920
 * March 15, 1920: Military Surplus Act of 1920 (Kahn-Wadsworth Act)
 * March 30, 1920: Death on the High Seas Act of 1920
 * April 13, 1920: Phelan Act of 1920
 * May 1, 1920: Fuller Act of 1920
 * May 10, 1920: Deportation Act of 1920
 * May 18, 1920: Kinkaid Act of 1920
 * May 20, 1920: Sale of Surplus Improved Public Lands Act
 * May 22, 1920: Civil Service Retirement Act of 1920
 * May 29, 1920: Independent Treasury Act of 1920
 * June 2, 1920: Industry Vocational Rehabilitation Act of 1920 (Smith-Bankhead Act)
 * June 2, 1920: Civilian Vocational Rehabilitation Act of 1920 (Smith-Fess Act)
 * June 2, 1920: National Park Criminal Jurisdiction Act
 * June 4, 1920: National Defense Act of 1920 (Kahn Act)
 * June 5, 1920: Sills Act of 1920
 * June 5, 1920: Merchant Marine Act of 1920 (Jones Act)
 * June 5, 1920: Women's Bureau Act of 1920
 * June 5, 1920: Ship Mortgage Act of 1920
 * June 5, 1920: River and Harbors Act of 1920
 * June 5, 1920: Federal Water Power Act of 1920 (Esch Act)
 * January 4, 1921: War Finance Corporation Act of 1921
 * March 3, 1921: Patent Act of 1921 (Nolan Act)
 * March 3, 1921: Federal Water Power Act Amendment (Jones-Esch Act)

Major events
A brief special session was called by President Wilson in March 1919, because of a filibuster that had successfully blocked appropriations bills needed to fund day-to-day government operations.


 * April 30, 1919: First wave of the 1919 United States anarchist bombings.
 * June 2, 1919: The home of Attorney General Palmer was bombed in the second wave of anarchist bombings.
 * June 15, 1919: Pancho Villa attacked Ciudad Juárez. When the bullets begin to fly to the U.S. side of the border, 2 units of the U.S. 7th Cavalry Regiment crossed the border and repulse Villa's forces.
 * July 19–23, 1919: Race riot in Washington, D.C.
 * August 31, 1919: American Communist Party was established
 * September 9, 1919: Boston Police Strike
 * September 22, 1919: Steel strike of 1919
 * October 2, 1919: President Woodrow Wilson suffered a massive stroke, leaving him partially paralyzed
 * November 1, 1919: Coal Strike of 1919
 * November 7, 1919: First of the Palmer Raids during the First Red Scare
 * January 2, 1920: Second of the Palmer Raids during the First Red Scare
 * January 16, 1920: Prohibition, went into effect in the United States
 * March 1, 1920: United States Railroad Administration returned control of American railroads to its constituent railroad companies
 * May 7–8, 1920: Louis Freeland Post appeared before the House Committee on Rules, effectively ending Attorney General Palmer's presidential aspirations.
 * November 2, 1920: Warren G. Harding defeated James M. Cox in the 1920 United States presidential election

Constitutional amendments

 * January 16, 1919: Eighteenth Amendment to the United States Constitution, declaring the production, transport, and sale of alcohol (though not the consumption or private possession) illegal, was ratified by the requisite number of states (then 36) to become part of the Constitution
 * Amendment later repealed on December 5, 1933, by the Twenty-first Amendment to the United States Constitution
 * June 4, 1919: Approved the Nineteenth Amendment to the U.S. Constitution prohibiting the states and the federal government from denying the right to vote to citizens of the United States on the basis of sex, and submitted it to the state legislatures for ratification
 * August 18, 1920: The Nineteenth Amendment to the United States Constitution was ratified by the requisite number of states (then 36) to become part of the Constitution

Treaties

 * March 19, 1920: Senate refused to ratify Treaty of Versailles

Presiding

 * President: Thomas R. Marshall (D)
 * President pro tempore: Albert B. Cummins (R)

Majority (Republican) leadership

 * Majority Leader: Henry Cabot Lodge
 * Majority Whip: Charles Curtis
 * Republican Conference Secretary: James Wolcott Wadsworth Jr.
 * National Senatorial Committee Chair: Miles Poindexter

Minority (Democratic) leadership

 * Minority Leader: Oscar Underwood
 * Minority Whip: Peter G. Gerry
 * Democratic Caucus Secretary: William H. King

Presiding

 * Speaker: Frederick H. Gillett (R)

Majority (Republican) leadership

 * Majority Leader: Franklin Mondell
 * Majority Whip: Harold Knutson
 * Republican Conference Chairman: Horace Mann Towner
 * Republican Campaign Committee Chairman: Simeon D. Fess

Minority (Democratic) leadership

 * Minority Leader: Champ Clark
 * Minority Whip: vacant
 * Democratic Caucus Chairman: Arthur Granville Dewalt
 * Democratic Campaign Committee Chairman: Scott Ferris

Members

 * Skip to House of Representatives, below

Senate
In this Congress, Class 3 meant their term ended with this Congress, requiring reelection in 1920; Class 1 meant their term began in the last Congress, requiring reelection in 1922; and Class 2 meant their term began in this Congress, requiring reelection in 1924.

Alabama

 * 2. John H. Bankhead (D), until March 1, 1920
 * Braxton B. Comer (D), from March 5, 1920 - November 2, 1920
 * J. Thomas Heflin (D), from November 3, 1920
 * 3. Oscar Underwood (D)

Arizona

 * 1. Henry F. Ashurst (D)
 * 3. Marcus A. Smith (D)

Arkansas

 * 2. Joseph Taylor Robinson (D)
 * 3. William F. Kirby (D)

California

 * 1. Hiram W. Johnson (R)
 * 3. James D. Phelan (D)

Colorado

 * 2. Lawrence C. Phipps (R)
 * 3. Charles S. Thomas (D)

Connecticut

 * 1. George P. McLean (R)
 * 3. Frank B. Brandegee (R)

Delaware

 * 1. Josiah O. Wolcott (D)
 * 2. L. Heisler Ball (R)

Florida

 * 1. Park Trammell (D)
 * 3. Duncan U. Fletcher (D)

Georgia

 * 2. William J. Harris (D)
 * 3. Hoke Smith (D)

Idaho

 * 2. William E. Borah (R)
 * 3. John F. Nugent (D), until January 14, 1921
 * Frank R. Gooding (R), from January 15, 1921

Illinois

 * 2. J. Medill McCormick (R)
 * 3. Lawrence Y. Sherman (R)

Indiana

 * 1. Harry S. New (R)
 * 3. James E. Watson (R)

Iowa

 * 2. William S. Kenyon (R)
 * 3. Albert B. Cummins (R)

Kansas

 * 2. Arthur Capper (R)
 * 3. Charles Curtis (R)

Kentucky

 * 2. Augustus Stanley (D)
 * 3. John C. W. Beckham (D)

Louisiana

 * 2. Joseph E. Ransdell (D)
 * 3. Edward J. Gay (D)

Maine

 * 1. Frederick Hale (R)
 * 2. Bert M. Fernald (R)

Maryland

 * 1. Joseph I. France (R)
 * 3. John W. Smith (D)

Massachusetts

 * 1. Henry Cabot Lodge (R)
 * 2. David I. Walsh (D)

Michigan

 * 1. Charles E. Townsend (R)
 * 2. Truman H. Newberry (R)

Minnesota

 * 1. Frank B. Kellogg (R)
 * 2. Knute Nelson (R)

Mississippi

 * 1. John Sharp Williams (D)
 * 2. Pat Harrison (D)

Missouri

 * 1. James A. Reed (D)
 * 3. Selden P. Spencer (R)

Montana

 * 1. Henry L. Myers (D)
 * 2. Thomas J. Walsh (D)

Nebraska

 * 1. Gilbert M. Hitchcock (D)
 * 2. George W. Norris (R)

Nevada

 * 1. Key Pittman (D)
 * 3. Charles B. Henderson (D)

New Hampshire

 * 2. Henry W. Keyes (R)
 * 3. George H. Moses (R)

New Jersey

 * 1. Joseph S. Frelinghuysen (R)
 * 2. Walter E. Edge (R)

New Mexico

 * 1. Andrieus A. Jones (D)
 * 2. Albert B. Fall (R)

New York

 * 1. William M. Calder (R)
 * 3. James W. Wadsworth Jr. (R)

North Carolina

 * 2. Furnifold M. Simmons (D)
 * 3. Lee S. Overman (D)

North Dakota

 * 1. Porter J. McCumber (R)
 * 3. Asle Gronna (R)

Ohio

 * 1. Atlee Pomerene (D)
 * 3. Warren G. Harding (R), until January 13, 1921
 * Frank B. Willis (R), from January 14, 1921

Oklahoma

 * 2. Robert L. Owen (D)
 * 3. Thomas P. Gore (D)

Oregon

 * 2. Charles L. McNary (R)
 * 3. George E. Chamberlain (D)

Pennsylvania

 * 1. Philander C. Knox (R)
 * 3. Boies Penrose (R)

Rhode Island

 * 1. Peter G. Gerry (D)
 * 2. LeBaron B. Colt (R)

South Carolina

 * 2. Nathaniel B. Dial (D)
 * 3. Ellison D. Smith (D)

South Dakota

 * 2. Thomas Sterling (R)
 * 3. Edwin S. Johnson (D)

Tennessee

 * 1. Kenneth D. McKellar (D)
 * 2. John K. Shields (D)

Texas

 * 1. Charles A. Culberson (D)
 * 2. Morris Sheppard (D)

Utah

 * 1. William H. King (D)
 * 3. Reed Smoot (R)

Vermont

 * 1. Carroll S. Page (R)
 * 3. William P. Dillingham (R),

Virginia

 * 1. Claude A. Swanson (D)
 * 2. Thomas S. Martin (D), until November 12, 1919
 * Carter Glass (D), from February 2, 1920

Washington

 * 1. Miles Poindexter (R)
 * 3. Wesley L. Jones (R)

West Virginia

 * 1. Howard Sutherland (R)
 * 2. Davis Elkins (R)

Wisconsin

 * 1. Robert M. La Follette Sr. (R)
 * 3. Irvine L. Lenroot (R)

Wyoming

 * 1. John B. Kendrick (D)
 * 2. Francis E. Warren (R)





House of Representatives
The names of members of the House of Representatives are preceded by their district numbers.

Alabama

 * Alabama's 1st congressional district. John McDuffie (D)
 * Alabama's 2nd congressional district. S. Hubert Dent Jr. (D)
 * Alabama's 3rd congressional district. Henry B. Steagall (D)
 * Alabama's 4th congressional district. Fred L. Blackmon (D), until February 8, 1921
 * Alabama's 5th congressional district. J. Thomas Heflin (D), until November 1, 1920
 * William B. Bowling (D), from December 14, 1920
 * Alabama's 6th congressional district. William B. Oliver (D)
 * Alabama's 7th congressional district. John L. Burnett (D), until May 13, 1919
 * Lilius Bratton Rainey (D), from September 30, 1919
 * Alabama's 8th congressional district. Edward B. Almon (D)
 * Alabama's 9th congressional district. George Huddleston (D)
 * Alabama's 10th congressional district. William B. Bankhead (D)

Arizona

 * At-large. Carl Hayden (D)

Arkansas

 * Arkansas's 1st congressional district. Thaddeus H. Caraway (D)
 * Arkansas's 2nd congressional district. William A. Oldfield (D)
 * Arkansas's 3rd congressional district. John N. Tillman (D)
 * Arkansas's 4th congressional district. Otis Wingo (D)
 * Arkansas's 5th congressional district. Henderson M. Jacoway (D)
 * Arkansas's 6th congressional district. Samuel M. Taylor (D)
 * Arkansas's 7th congressional district. William S. Goodwin (D)

California

 * California's 1st congressional district. Clarence F. Lea (D)
 * California's 2nd congressional district. John E. Raker (D)
 * California's 3rd congressional district. Charles F. Curry (R)
 * California's 4th congressional district. Julius Kahn (R)
 * California's 5th congressional district. John I. Nolan (R)
 * California's 6th congressional district. John A. Elston (R)
 * California's 7th congressional district. Henry E. Barbour (R)
 * California's 8th congressional district. Hugh S. Hersman (D)
 * California's 9th congressional district. Charles H. Randall (Proh.)
 * California's 10th congressional district. Henry Z. Osborne (R)
 * California's 11th congressional district. William Kettner (D)

Colorado

 * Colorado's 1st congressional district. William N. Vaile (R)
 * Colorado's 2nd congressional district. Charles Bateman Timberlake (R)
 * Colorado's 3rd congressional district. Guy U. Hardy (R)
 * Colorado's 4th congressional district. Edward T. Taylor (D)

Connecticut

 * Connecticut's 1st congressional district. Augustine Lonergan (D)
 * Connecticut's 2nd congressional district. Richard P. Freeman (R)
 * Connecticut's 3rd congressional district. John Q. Tilson (R)
 * Connecticut's 4th congressional district. Schuyler Merritt (R)
 * Connecticut's 5th congressional district. James P. Glynn (R)

Delaware

 * At-large. Caleb R. Layton (R)

Florida

 * Florida's 1st congressional district. Herbert J. Drane (D)
 * Florida's 2nd congressional district. Frank Clark (D)
 * Florida's 3rd congressional district. John H. Smithwick (D)
 * Florida's 4th congressional district. William J. Sears (D)

Georgia

 * Georgia's 1st congressional district. James W. Overstreet (D)
 * Georgia's 2nd congressional district. Frank Park (D)
 * Georgia's 3rd congressional district. Charles R. Crisp (D)
 * Georgia's 4th congressional district. William C. Wright (D)
 * Georgia's 5th congressional district. William D. Upshaw (D)
 * Georgia's 6th congressional district. James W. Wise (D)
 * Georgia's 7th congressional district. Gordon Lee (D)
 * Georgia's 8th congressional district. Charles H. Brand (D)
 * Georgia's 9th congressional district. Thomas Montgomery Bell (D)
 * Georgia's 10th congressional district. Carl Vinson (D)
 * Georgia's 11th congressional district. William C. Lankford (D)
 * Georgia's 12th congressional district. William W. Larsen (D)

Idaho

 * Idaho's 1st congressional district. Burton L. French (R)
 * Idaho's 2nd congressional district. Addison T. Smith (R)

Illinois

 * Illinois's 1st congressional district. Martin B. Madden (R)
 * Illinois's 2nd congressional district. James R. Mann (R)
 * Illinois's 3rd congressional district. William W. Wilson (R)
 * Illinois's 4th congressional district. John W. Rainey (D)
 * Illinois's 5th congressional district. Adolph J. Sabath (D)
 * Illinois's 6th congressional district. James McAndrews (D)
 * Illinois's 7th congressional district. Niels Juul (R)
 * Illinois's 8th congressional district. Thomas Gallagher (D)
 * Illinois's 9th congressional district. Frederick A. Britten (R)
 * Illinois's 10th congressional district. Carl R. Chindblom (R)
 * Illinois's 11th congressional district. Ira C. Copley (R)
 * Illinois's 12th congressional district. Charles Eugene Fuller (R)
 * Illinois's 13th congressional district. John C. McKenzie (R)
 * Illinois's 14th congressional district. William J. Graham (R)
 * Illinois's 15th congressional district. Edward John King (R)
 * Illinois's 16th congressional district. Clifford Ireland (R)
 * Illinois's 17th congressional district. Frank L. Smith (R)
 * Illinois's 18th congressional district. Joseph G. Cannon (R)
 * Illinois's 19th congressional district. William B. McKinley (R)
 * Illinois's 20th congressional district. Henry T. Rainey (D)
 * Illinois's 21st congressional district. Loren E. Wheeler (R)
 * Illinois's 22nd congressional district. William A. Rodenberg (R)
 * Illinois's 23rd congressional district. Edwin B. Brooks (R)
 * Illinois's 24th congressional district. Thomas S. Williams (R)
 * Illinois's 25th congressional district. Edward E. Denison (R)
 * At-large. Richard Yates Jr. (R)
 * At-large. William E. Mason (R)

Indiana

 * Indiana's 1st congressional district. Oscar R. Luhring (R)
 * Indiana's 2nd congressional district. Oscar E. Bland (R)
 * Indiana's 3rd congressional district. James W. Dunbar (R)
 * Indiana's 4th congressional district. John S. Benham (R)
 * Indiana's 5th congressional district. Everett Sanders (R)
 * Indiana's 6th congressional district. Richard N. Elliott (R)
 * Indiana's 7th congressional district. Merrill Moores (R)
 * Indiana's 8th congressional district. Albert H. Vestal (R)
 * Indiana's 9th congressional district. Fred S. Purnell (R)
 * Indiana's 10th congressional district. William R. Wood (R)
 * Indiana's 11th congressional district. Milton Kraus (R)
 * Indiana's 12th congressional district. Louis W. Fairfield (R)
 * Indiana's 13th congressional district. Andrew J. Hickey (R)

Iowa

 * Iowa's 1st congressional district. Charles A. Kennedy (R)
 * Iowa's 2nd congressional district. Harry E. Hull (R)
 * Iowa's 3rd congressional district. Burton E. Sweet (R)
 * Iowa's 4th congressional district. Gilbert N. Haugen (R)
 * Iowa's 5th congressional district. James W. Good (R)
 * Iowa's 6th congressional district. C. William Ramseyer (R)
 * Iowa's 7th congressional district. Cassius C. Dowell (R)
 * Iowa's 8th congressional district. Horace M. Towner (R)
 * Iowa's 9th congressional district. William R. Green (R)
 * Iowa's 10th congressional district. Lester J. Dickinson (R)
 * Iowa's 11th congressional district. William D. Boies (R)

Kansas

 * Kansas's 1st congressional district. Daniel Read Anthony Jr. (R)
 * Kansas's 2nd congressional district. Edward C. Little (R)
 * Kansas's 3rd congressional district. Philip P. Campbell (R)
 * Kansas's 4th congressional district. Homer Hoch (R)
 * Kansas's 5th congressional district. James G. Strong (R)
 * Kansas's 6th congressional district. Hays B. White (R)
 * Kansas's 7th congressional district. Jasper N. Tincher (R)
 * Kansas's 8th congressional district. William A. Ayres (D)

Kentucky

 * Kentucky's 1st congressional district. Alben Barkley (D)
 * Kentucky's 2nd congressional district. David Hayes Kincheloe (D)
 * Kentucky's 3rd congressional district. Robert Y. Thomas Jr. (D)
 * Kentucky's 4th congressional district. Ben Johnson (D)
 * Kentucky's 5th congressional district. Charles F. Ogden (R)
 * Kentucky's 6th congressional district. Arthur B. Rouse (D)
 * Kentucky's 7th congressional district. J. Campbell Cantrill (D)
 * Kentucky's 8th congressional district. King Swope (R), from August 1, 1919
 * Kentucky's 9th congressional district. William Jason Fields (D)
 * Kentucky's 10th congressional district. John W. Langley (R)
 * Kentucky's 11th congressional district. John M. Robsion (R)

Louisiana

 * Louisiana's 1st congressional district. Albert Estopinal (D), until April 28, 1919
 * James O'Connor (D), from June 5, 1919
 * Louisiana's 2nd congressional district. Henry Garland Dupré (D)
 * Louisiana's 3rd congressional district. Whitmell P. Martin (D)
 * Louisiana's 4th congressional district. John Thomas Watkins (D)
 * Louisiana's 5th congressional district. Riley Joseph Wilson (D)
 * Louisiana's 6th congressional district. Jared Y. Sanders Sr. (D)
 * Louisiana's 7th congressional district. Ladislas Lazaro (D)
 * Louisiana's 8th congressional district. James Benjamin Aswell (D)

Maine

 * Maine's 1st congressional district. Louis B. Goodall (R)
 * Maine's 2nd congressional district. Wallace H. White Jr. (R)
 * Maine's 3rd congressional district. John A. Peters (R)
 * Maine's 4th congressional district. Ira G. Hersey (R)

Maryland

 * Maryland's 1st congressional district. William N. Andrews (R)
 * Maryland's 2nd congressional district. Carville Benson (D)
 * Maryland's 3rd congressional district. Charles P. Coady (D)
 * Maryland's 4th congressional district. J. Charles Linthicum (D)
 * Maryland's 5th congressional district. Sydney Emanuel Mudd II (R)
 * Maryland's 6th congressional district. Frederick N. Zihlman (R)

Massachusetts

 * Massachusetts's 1st congressional district. Allen T. Treadway (R)
 * Massachusetts's 2nd congressional district. Frederick H. Gillett (R)
 * Massachusetts's 3rd congressional district. Calvin D. Paige (R)
 * Massachusetts's 4th congressional district. Samuel E. Winslow (R)
 * Massachusetts's 5th congressional district. John J. Rogers (R)
 * Massachusetts's 6th congressional district. Willfred W. Lufkin (R)
 * Massachusetts's 7th congressional district. Michael F. Phelan (D)
 * Massachusetts's 8th congressional district. Frederick W. Dallinger (R)
 * Massachusetts's 9th congressional district. Alvan T. Fuller (R), until January 5, 1921
 * Massachusetts's 10th congressional district. John F. Fitzgerald (D), until October 23, 1919
 * Peter F. Tague (D), from October 23, 1919
 * Massachusetts's 11th congressional district. George H. Tinkham (R)
 * Massachusetts's 12th congressional district. James A. Gallivan (D)
 * Massachusetts's 13th congressional district. Robert Luce (R)
 * Massachusetts's 14th congressional district. Richard Olney II (D)
 * Massachusetts's 15th congressional district. William S. Greene (R)
 * Massachusetts's 16th congressional district. Joseph Walsh (R)

Michigan

 * Michigan's 1st congressional district. Frank E. Doremus (D)
 * Michigan's 2nd congressional district. Earl C. Michener (R)
 * Michigan's 3rd congressional district. John M. C. Smith (R)
 * Michigan's 4th congressional district. Edward L. Hamilton (R)
 * Michigan's 5th congressional district. Carl Mapes (R)
 * Michigan's 6th congressional district. Patrick H. Kelley (R)
 * Michigan's 7th congressional district. Louis C. Cramton (R)
 * Michigan's 8th congressional district. Joseph W. Fordney (R)
 * Michigan's 9th congressional district. James C. McLaughlin (R)
 * Michigan's 10th congressional district. Gilbert A. Currie (R)
 * Michigan's 11th congressional district. Frank D. Scott (R)
 * Michigan's 12th congressional district. W. Frank James (R)
 * Michigan's 13th congressional district. Charles Archibald Nichols (R), until April 25, 1920
 * Clarence J. McLeod (R), from November 2, 1920

Minnesota

 * Minnesota's 1st congressional district. Sydney Anderson (R)
 * Minnesota's 2nd congressional district. Franklin Ellsworth (R)
 * Minnesota's 3rd congressional district. Charles Russell Davis (R)
 * Minnesota's 4th congressional district. Carl Van Dyke (D), until May 20, 1919
 * Oscar E. Keller (IR), from July 1, 1919
 * Minnesota's 5th congressional district. Walter H. Newton (R)
 * Minnesota's 6th congressional district. Harold Knutson (R)
 * Minnesota's 7th congressional district. Andrew Volstead (R)
 * Minnesota's 8th congressional district. William Leighton Carss (FL)
 * Minnesota's 9th congressional district. Halvor Steenerson (R)
 * Minnesota's 10th congressional district. Thomas D. Schall (R)

Mississippi

 * Mississippi's 1st congressional district. Ezekiel S. Candler Jr. (D)
 * Mississippi's 2nd congressional district. Hubert D. Stephens (D)
 * Mississippi's 3rd congressional district. Benjamin G. Humphreys II (D)
 * Mississippi's 4th congressional district. Thomas U. Sisson (D)
 * Mississippi's 5th congressional district. William Webb Venable (D)
 * Mississippi's 6th congressional district. Paul B. Johnson Sr. (D)
 * Mississippi's 7th congressional district. Percy E. Quin (D)
 * Mississippi's 8th congressional district. James W. Collier (D)

Missouri

 * Missouri's 1st congressional district. Milton A. Romjue (D)
 * Missouri's 2nd congressional district. William W. Rucker (D)
 * Missouri's 3rd congressional district. Joshua W. Alexander (D), until December 15, 1919
 * Jacob L. Milligan (D), from February 14, 1920
 * Missouri's 4th congressional district. Charles F. Booher (D), until January 21, 1921
 * Missouri's 5th congressional district. William Thomas Bland (D)
 * Missouri's 6th congressional district. Clement C. Dickinson (D)
 * Missouri's 7th congressional district. Samuel C. Major (D)
 * Missouri's 8th congressional district. William L. Nelson (D)
 * Missouri's 9th congressional district. James Beauchamp Clark (D), until March 2, 1921
 * Missouri's 10th congressional district. Cleveland A. Newton (R)
 * Missouri's 11th congressional district. William Leo Igoe (D)
 * Missouri's 12th congressional district. Leonidas C. Dyer (R)
 * Missouri's 13th congressional district. Marion E. Rhodes (R)
 * Missouri's 14th congressional district. Edward D. Hays (R)
 * Missouri's 15th congressional district. Isaac V. McPherson (R)
 * Missouri's 16th congressional district. Thomas L. Rubey (D)

Montana

 * Montana's 1st congressional district. John M. Evans (D)
 * Montana's 2nd congressional district. Carl W. Riddick (R)

Nebraska

 * Nebraska's 1st congressional district. C. Frank Reavis (R)
 * Nebraska's 2nd congressional district. Albert W. Jefferis (R)
 * Nebraska's 3rd congressional district. Robert E. Evans (R)
 * Nebraska's 4th congressional district. Melvin O. McLaughlin (R)
 * Nebraska's 5th congressional district. William E. Andrews (R)
 * Nebraska's 6th congressional district. Moses P. Kinkaid (R)

Nevada

 * At-large. Charles R. Evans (D)

New Hampshire

 * New Hampshire's 1st congressional district. Sherman Everett Burroughs (R)
 * New Hampshire's 2nd congressional district. Edward Hills Wason (R)

New Jersey

 * New Jersey's 1st congressional district. William J. Browning (R), until March 24, 1920
 * Francis F. Patterson Jr. (R), from November 2, 1920
 * New Jersey's 2nd congressional district. Isaac Bacharach (R)
 * New Jersey's 3rd congressional district. Thomas J. Scully (D)
 * New Jersey's 4th congressional district. Elijah C. Hutchinson (R)
 * New Jersey's 5th congressional district. Ernest R. Ackerman (R)
 * New Jersey's 6th congressional district. John R. Ramsey (R)
 * New Jersey's 7th congressional district. Amos H. Radcliffe (R)
 * New Jersey's 8th congressional district. Cornelius A. McGlennon (D)
 * New Jersey's 9th congressional district. Daniel F. Minahan (D)
 * New Jersey's 10th congressional district. Frederick R. Lehlbach (R)
 * New Jersey's 11th congressional district. John J. Eagan (D)
 * New Jersey's 12th congressional district. James A. Hamill (D)

New Mexico

 * At-large. Benigno C. Hernández (R)

New York

 * New York's 1st congressional district. Frederick C. Hicks (R)
 * New York's 2nd congressional district. C. Pope Caldwell (D)
 * New York's 3rd congressional district. John MacCrate (R), until December 30, 1920
 * New York's 4th congressional district. Thomas H. Cullen (D)
 * New York's 5th congressional district. John B. Johnston (D)
 * New York's 6th congressional district. Frederick W. Rowe (R)
 * New York's 7th congressional district. James P. Maher (D)
 * New York's 8th congressional district. William E. Cleary (D)
 * New York's 9th congressional district. David J. O'Connell (D)
 * New York's 10th congressional district. Reuben L. Haskell (R), until December 31, 1919
 * Lester D. Volk (R), from November 2, 1920
 * New York's 11th congressional district. Daniel J. Riordan (D)
 * New York's 12th congressional district. Henry M. Goldfogle (D)
 * New York's 13th congressional district. Christopher D. Sullivan (D)
 * New York's 14th congressional district. Fiorello H. LaGuardia (R), until December 31, 1919
 * Nathan D. Perlman (R), from November 2, 1920
 * New York's 15th congressional district. Peter J. Dooling (D)
 * New York's 16th congressional district. Thomas Francis Smith (D)
 * New York's 17th congressional district. Herbert C. Pell Jr. (D)
 * New York's 18th congressional district. John F. Carew (D)
 * New York's 19th congressional district. Joseph Rowan (D)
 * New York's 20th congressional district. Isaac Siegel (R)
 * New York's 21st congressional district. Jerome F. Donovan (D)
 * New York's 22nd congressional district. Anthony J. Griffin (D)
 * New York's 23rd congressional district. Richard F. McKiniry (D)
 * New York's 24th congressional district. James V. Ganly (D)
 * New York's 25th congressional district. James W. Husted (R)
 * New York's 26th congressional district. Edmund Platt (R), until June 7, 1920
 * Hamilton Fish III (R), from November 2, 1920
 * New York's 27th congressional district. Charles B. Ward (R)
 * New York's 28th congressional district. Rollin B. Sanford (R)
 * New York's 29th congressional district. James S. Parker (R)
 * New York's 30th congressional district. Frank Crowther (R)
 * New York's 31st congressional district. Bertrand H. Snell (R)
 * New York's 32nd congressional district. Luther W. Mott (R)
 * New York's 33rd congressional district. Homer P. Snyder (R)
 * New York's 34th congressional district. William H. Hill (R)
 * New York's 35th congressional district. Walter W. Magee (R)
 * New York's 36th congressional district. Norman J. Gould (R)
 * New York's 37th congressional district. Alanson B. Houghton (R)
 * New York's 38th congressional district. Thomas B. Dunn (R)
 * New York's 39th congressional district. Archie D. Sanders (R)
 * New York's 40th congressional district. S. Wallace Dempsey (R)
 * New York's 41st congressional district. Clarence MacGregor (R)
 * New York's 42nd congressional district. James M. Mead (D)
 * New York's 43rd congressional district. Daniel A. Reed (R)

North Carolina

 * North Carolina's 1st congressional district. John Humphrey Small (D)
 * North Carolina's 2nd congressional district. Claude Kitchin (D)
 * North Carolina's 3rd congressional district. Samuel M. Brinson (D)
 * North Carolina's 4th congressional district. Edward W. Pou (D)
 * North Carolina's 5th congressional district. Charles M. Stedman (D)
 * North Carolina's 6th congressional district. Hannibal L. Godwin (D)
 * North Carolina's 7th congressional district. Leonidas D. Robinson (D)
 * North Carolina's 8th congressional district. Robert L. Doughton (D)
 * North Carolina's 9th congressional district. Edwin Y. Webb (D), until November 10, 1919
 * Clyde R. Hoey (D), from December 16, 1919
 * North Carolina's 10th congressional district. Zebulon Weaver (D)

North Dakota

 * North Dakota's 1st congressional district. John Miller Baer (R)
 * North Dakota's 2nd congressional district. George M. Young (R)
 * North Dakota's 3rd congressional district. James H. Sinclair (R)

Ohio

 * Ohio's 1st congressional district. Nicholas Longworth (R)
 * Ohio's 2nd congressional district. Ambrose E. B. Stephens (R)
 * Ohio's 3rd congressional district. Warren Gard (D)
 * Ohio's 4th congressional district. Benjamin F. Welty (D)
 * Ohio's 5th congressional district. Charles J. Thompson (R)
 * Ohio's 6th congressional district. Charles C. Kearns (R)
 * Ohio's 7th congressional district. Simeon D. Fess (R)
 * Ohio's 8th congressional district. R. Clinton Cole (R)
 * Ohio's 9th congressional district. Isaac R. Sherwood (D)
 * Ohio's 10th congressional district. Israel M. Foster (R)
 * Ohio's 11th congressional district. Edwin D. Ricketts (R)
 * Ohio's 12th congressional district. Clement L. Brumbaugh (D)
 * Ohio's 13th congressional district. James T. Begg (R)
 * Ohio's 14th congressional district. Martin L. Davey (D)
 * Ohio's 15th congressional district. C. Ellis Moore (R)
 * Ohio's 16th congressional district. Roscoe C. McCulloch (R)
 * Ohio's 17th congressional district. William A. Ashbrook (D)
 * Ohio's 18th congressional district. B. Frank Murphy (R)
 * Ohio's 19th congressional district. John G. Cooper (R)
 * Ohio's 20th congressional district. Charles A. Mooney (D)
 * Ohio's 21st congressional district. John J. Babka (D)
 * Ohio's 22nd congressional district. Henry I. Emerson (R)

Oklahoma

 * Oklahoma's 1st congressional district. Everette B. Howard (D)
 * Oklahoma's 2nd congressional district. William W. Hastings (D)
 * Oklahoma's 3rd congressional district. Charles D. Carter (D)
 * Oklahoma's 4th congressional district. Tom D. McKeown (D)
 * Oklahoma's 5th congressional district. Joseph Bryan Thompson (D), until September 18, 1919
 * John W. Harreld (R), from November 8, 1919
 * Oklahoma's 6th congressional district. Scott Ferris (D)
 * Oklahoma's 7th congressional district. James V. McClintic (D)
 * Oklahoma's 8th congressional district. Dick Thompson Morgan (R), until July 4, 1920
 * Charles Swindall (R), from November 2, 1920

Oregon

 * Oregon's 1st congressional district. Willis C. Hawley (R)
 * Oregon's 2nd congressional district. Nicholas J. Sinnott (R)
 * Oregon's 3rd congressional district. Clifton N. McArthur (R)

Pennsylvania

 * Pennsylvania's 1st congressional district. William S. Vare (R)
 * Pennsylvania's 2nd congressional district. George S. Graham (R)
 * Pennsylvania's 3rd congressional district. J. Hampton Moore (R), until January 4, 1920
 * Harry C. Ransley (R), from November 2, 1920
 * Pennsylvania's 4th congressional district. George W. Edmonds (R)
 * Pennsylvania's 5th congressional district. Peter E. Costello (R)
 * Pennsylvania's 6th congressional district. George P. Darrow (R)
 * Pennsylvania's 7th congressional district. Thomas S. Butler (R)
 * Pennsylvania's 8th congressional district. Henry Winfield Watson (R)
 * Pennsylvania's 9th congressional district. William W. Griest (R)
 * Pennsylvania's 10th congressional district. Patrick McLane (D), until February 25, 1921
 * John R. Farr (R), from February 25, 1921
 * Pennsylvania's 11th congressional district. John J. Casey (D)
 * Pennsylvania's 12th congressional district. John Reber (R)
 * Pennsylvania's 13th congressional district. Arthur G. Dewalt (D)
 * Pennsylvania's 14th congressional district. Louis T. McFadden (R)
 * Pennsylvania's 15th congressional district. Edgar R. Kiess (R)
 * Pennsylvania's 16th congressional district. John V. Lesher (D)
 * Pennsylvania's 17th congressional district. Benjamin K. Focht (R)
 * Pennsylvania's 18th congressional district. Aaron S. Kreider (R)
 * Pennsylvania's 19th congressional district. John M. Rose (R)
 * Pennsylvania's 20th congressional district. Edward S. Brooks (R)
 * Pennsylvania's 21st congressional district. Evan J. Jones (R)
 * Pennsylvania's 22nd congressional district. John Haden Wilson (D)
 * Pennsylvania's 23rd congressional district. Samuel A. Kendall (R)
 * Pennsylvania's 24th congressional district. Henry W. Temple (R)
 * Pennsylvania's 25th congressional district. Milton W. Shreve (R)
 * Pennsylvania's 26th congressional district. Henry J. Steele (D)
 * Pennsylvania's 27th congressional district. Nathan L. Strong (R)
 * Pennsylvania's 28th congressional district. Willis J. Hulings (R)
 * Pennsylvania's 29th congressional district. Stephen G. Porter (R)
 * Pennsylvania's 30th congressional district. M. Clyde Kelly (R)
 * Pennsylvania's 31st congressional district. John M. Morin (R)
 * Pennsylvania's 32nd congressional district. Guy E. Campbell (D)
 * At-large. Thomas S. Crago (R)
 * At-large. William J. Burke (R)
 * At-large. Anderson H. Walters (R)
 * At-large. Mahlon M. Garland (R), until November 19, 1920

Rhode Island

 * Rhode Island's 1st congressional district. Clark Burdick (R)
 * Rhode Island's 2nd congressional district. Walter Russell Stiness (R)
 * Rhode Island's 3rd congressional district. Ambrose Kennedy (R)

South Carolina

 * South Carolina's 1st congressional district. Richard S. Whaley (D)
 * South Carolina's 2nd congressional district. James F. Byrnes (D)
 * South Carolina's 3rd congressional district. Fred H. Dominick (D)
 * South Carolina's 4th congressional district. Samuel J. Nicholls (D)
 * South Carolina's 5th congressional district. William F. Stevenson (D)
 * South Carolina's 6th congressional district. J. Willard Ragsdale (D), until July 23, 1919
 * Philip H. Stoll (D), from October 7, 1919
 * South Carolina's 7th congressional district. Asbury F. Lever (D), until August 1, 1919
 * Edward C. Mann (D), from October 7, 1919

South Dakota

 * South Dakota's 1st congressional district. Charles A. Christopherson (R)
 * South Dakota's 2nd congressional district. Royal C. Johnson (R)
 * South Dakota's 3rd congressional district. Harry L. Gandy (D)

Tennessee

 * Tennessee's 1st congressional district. Sam R. Sells (R)
 * Tennessee's 2nd congressional district. J. Will Taylor (R)
 * Tennessee's 3rd congressional district. John A. Moon (D)
 * Tennessee's 4th congressional district. Cordell Hull (D)
 * Tennessee's 5th congressional district. Ewin L. Davis (D)
 * Tennessee's 6th congressional district. Joseph W. Byrns (D)
 * Tennessee's 7th congressional district. Lemuel P. Padgett (D)
 * Tennessee's 8th congressional district. Thetus W. Sims (D)
 * Tennessee's 9th congressional district. Finis J. Garrett (D)
 * Tennessee's 10th congressional district. Hubert Fisher (D)

Texas

 * Texas's 1st congressional district. Eugene Black (D)
 * Texas's 2nd congressional district. John C. Box (D)
 * Texas's 3rd congressional district. James Young (D)
 * Texas's 4th congressional district. Sam Rayburn (D)
 * Texas's 5th congressional district. Hatton W. Sumners (D)
 * Texas's 6th congressional district. Rufus Hardy (D)
 * Texas's 7th congressional district. Clay Stone Briggs (D)
 * Texas's 8th congressional district. Joe H. Eagle (D)
 * Texas's 9th congressional district. Joseph J. Mansfield (D)
 * Texas's 10th congressional district. James P. Buchanan (D)
 * Texas's 11th congressional district. Tom T. Connally (D)
 * Texas's 12th congressional district. Fritz G. Lanham (D), from April 19, 1919
 * Texas's 13th congressional district. Lucian W. Parrish (D)
 * Texas's 14th congressional district. Carlos Bee (D)
 * Texas's 15th congressional district. John Nance Garner (D)
 * Texas's 16th congressional district. Claude B. Hudspeth (D)
 * Texas's 17th congressional district. Thomas L. Blanton (D)
 * Texas's 18th congressional district. John Marvin Jones (D)

Utah

 * Utah's 1st congressional district. Milton H. Welling (D)
 * Utah's 2nd congressional district. James Henry Mays (D)

Vermont

 * Vermont's 1st congressional district. Frank L. Greene (R)
 * Vermont's 2nd congressional district. Porter H. Dale (R)

Virginia

 * Virginia's 1st congressional district. S. Otis Bland (D)
 * Virginia's 2nd congressional district. Edward Everett Holland (D)
 * Virginia's 3rd congressional district. Andrew Jackson Montague (D)
 * Virginia's 4th congressional district. Walter Allen Watson (D), until December 24, 1919
 * Patrick H. Drewry (D), from April 27, 1920
 * Virginia's 5th congressional district. Edward W. Saunders (D), until February 29, 1920
 * Rorer A. James (D), from June 1, 1920
 * Virginia's 6th congressional district. James P. Woods (D)
 * Virginia's 7th congressional district. Thomas W. Harrison (D)
 * Virginia's 8th congressional district. R. Walton Moore (D), from April 27, 1919
 * Virginia's 9th congressional district. C. Bascom Slemp (R)
 * Virginia's 10th congressional district. Henry D. Flood (D)

Washington

 * Washington's 1st congressional district. John F. Miller (R)
 * Washington's 2nd congressional district. Lindley H. Hadley (R)
 * Washington's 3rd congressional district. Albert Johnson (R)
 * Washington's 4th congressional district. John W. Summers (R)
 * Washington's 5th congressional district. J. Stanley Webster (R)

West Virginia

 * West Virginia's 1st congressional district. Matthew M. Neely (D)
 * West Virginia's 2nd congressional district. George M. Bowers (R)
 * West Virginia's 3rd congressional district. Stuart F. Reed (R)
 * West Virginia's 4th congressional district. Harry C. Woodyard (R)
 * West Virginia's 5th congressional district. Wells Goodykoontz (R)
 * West Virginia's 6th congressional district. Leonard S. Echols (R)

Wisconsin

 * Wisconsin's 1st congressional district. Clifford E. Randall (R)
 * Wisconsin's 2nd congressional district. Edward Voigt (R)
 * Wisconsin's 3rd congressional district. James G. Monahan (R)
 * Wisconsin's 4th congressional district. John C. Kleczka (R)
 * Wisconsin's 5th congressional district. Victor L. Berger (Soc.), until November 10, 1919
 * Wisconsin's 6th congressional district. Florian Lampert (R)
 * Wisconsin's 7th congressional district. John J. Esch (R)
 * Wisconsin's 8th congressional district. Edward E. Browne (R)
 * Wisconsin's 9th congressional district. David G. Classon (R)
 * Wisconsin's 10th congressional district. James A. Frear (R)
 * Wisconsin's 11th congressional district. Adolphus P. Nelson (R)

Wyoming

 * At-large. Franklin W. Mondell (R)

Non-voting members

 * Alaska Territory's at-large congressional district. Charles A. Sulzer (D), until April 28, 1919
 * George B. Grigsby (D), from June 3, 1920 - March 1, 1921
 * James Wickersham (R), from March 1, 1921
 * Hawaii Territory's at-large congressional district. Jonah Kuhio Kalanianaole (R)
 * Puerto Rico's at-large congressional district. Félix Córdova Dávila (Resident Commissioner), Unionist
 * Philippines's at-large congressional district. Jaime C. de Veyra (Resident Commissioner)
 * Philippines's at-large congressional district. Teodoro R. Yangco (Resident Commissioner), (I) until March 3, 1920
 * Isauro Gabaldon (Resident Commissioner), (Nac.) from March 4, 1920

[[File:66 us house membership.png|thumb|400px|

Changes in membership
The count below reflects changes from the beginning of the first session of this Congress.

Senate

 * Replacements: 5
 * Democratic: 1 seat net loss
 * Republican: 1 seat net gain
 * Deaths: 2
 * Resignations: 2
 * Vacancy: 0
 * Total seats with changes:  4

House of Representatives

 * Replacements: 23
 * Democratic: 4 seat net loss
 * Republican: 4 seat net gain
 * Deaths: 13
 * Resignations: 10
 * Contested elections: 3
 * Total seats with changes: 32

Senate

 * United States Senate Select Committee on the Additional Accommodations for the Library of Congress|Additional Accommodations for the Library of Congress (Select) (Chairman: Furnifold M. Simmons; Ranking Member: Boies Penrose)
 * Agriculture and Forestry (Chairman: Asle Gronna; Ranking Member: Thomas P. Gore)
 * Appropriations (Chairman: Francis E. Warren; Ranking Member: Lee S. Overman)
 * Audit and Control the Contingent Expenses of the Senate (Chairman: William M. Calder; Ranking Member: Andrieus A. Jones)
 * Banking and Currency (Chairman: George P. McLean; Ranking Member: Robert L. Owen)
 * Budget (Special)
 * Canadian Relations (Chairman: Frederick Hale; Ranking Member: John B. Kendrick)
 * Census (Chairman: Howard Sutherland; Ranking Member: Morris Sheppard)
 * Civil Service and Retrenchment (Chairman: Thomas Sterling; Ranking Member: Kenneth McKellar)
 * Claims (Chairman: Selden P. Spencer; Ranking Member: Joseph T. Robinson)
 * Coast and Insular Survey (Chairman: Walter Evans Edge; Ranking Member: Edward J. Gay)
 * Coast Defenses (Chairman: Joseph S. Frelinghuysen; Ranking Member: John W. Smith)
 * Commerce (Chairman: Wesley L. Jones; Ranking Member: Duncan U. Fletcher)
 * Conservation of National Resources (Chairman: Ellison D. Smith; Ranking Member: LeBaron B. Colt)
 * Corporations Organized in the District of Columbia (Chairman: Atlee Pomerene; Ranking Member: Robert M. La Follette)
 * Cuban Relations (Chairman: Hiram W. Johnson; Ranking Member: Oscar W. Underwood)
 * Disposition of Useless Papers in the Executive Departments (Chairman: Thomas J. Walsh; Ranking Member: Joseph I. France)
 * District of Columbia (Chairman: Lawrence Y. Sherman; Ranking Member: John W. Smith)
 * District of Columbia Public School System (Select)
 * Education and Labor (Chairman: William S. Kenyon; Ranking Member: Hoke Smith)
 * Engrossed Bills (Chairman: Lee S. Overman; Ranking Member: Francis E. Warren)
 * Enrolled Bills (Chairman: L. Heisler Ball; Ranking Member: Nathaniel B. Dial)
 * Establish a University in the United States (Select)
 * Examine the Several Branches in the Civil Service (Chairman: John Walter Smith; Ranking Member: Frank B. Brandegee)
 * Expenditures in the Department of Agriculture (Chairman: Arthur Capper; Ranking Member: Furnifold M. Simmons)
 * Expenditures in the Department of Commerce (Chairman: Davis Elkins; Ranking Member: Josiah O. Wolcott)
 * Expenditures in the Interior Department (Chairman: John H. Bankhead; Ranking Member: Reed Smoot)
 * Expenditures in the Department of Justice (Chairman: Thomas P. Gore; Ranking Member: William E. Borah)
 * Expenditures in the Department of Labor (Chairman: Medill McCormick; Ranking Member: J.C.W. Beckham)
 * Expenditures in the Navy Department (Chairman: Claude A. Swanson; Ranking Member: William P. Dillingham)
 * Expenditures in the Post Office Department (Chairman: Henry W. Keyes; Ranking Member: William H. King)
 * Expenditures in the Department of State (Chairman: Lawrence C. Phipps; Ranking Member: Henry L. Myers)
 * Expenditures in the Treasury Department (Chairman: Hoke Smith; Ranking Member: Warren G. Harding)
 * Finance (Chairman: Boies Penrose; Ranking Member: Furnifold M. Simmons)
 * Fisheries (Chairman: Truman H. Newberry; Ranking Member: Duncan U. Fletcher)
 * Five Civilized Tribes of Indians (Chairman: Robert L. Owen; Ranking Member: George W. Norris)
 * Foreign Relations (Chairman: Henry Cabot Lodge; Ranking Member: Gilbert M. Hitchcock)
 * Forest Reservations and the Protection of Game (Chairman: Gilbert M. Hitchcock; Ranking Member: George P. McLean)
 * Geological Survey (Chairman: Marcus A. Smith; Ranking Member: George W. Norris)
 * Immigration (Chairman: LeBaron B. Colt; Ranking Member: Thomas P. Gore)
 * Indian Affairs (Chairman: Charles Curtis; Ranking Member: Henry F. Ashurst)
 * Indian Depredations (Chairman: Henry L. Myers; Ranking Member: Miles Poindexter)
 * Industrial Expositions (Chairman: Key Pittman; Ranking Member: Asle Gronna)
 * Interoceanic Canals (Chairman: William E. Borah; Ranking Member: Thomas J. Walsh)
 * Interstate Commerce (Chairman: Albert B. Cummins; Ranking Member: Ellison D. Smith)
 * Investigate Trespassers upon Indian Lands (Chairman: Henry F. Ashurst; Ranking Member: Wesley L. Jones)
 * Irrigation and Reclamation of Arid Lands (Chairman: Charles L. McNary; Ranking Member: James D. Phelan)
 * Judiciary (Chairman: Knute Nelson; Ranking Member: Charles A. Culberson)
 * Library (Chairman: Frank B. Brandegee; Ranking Member: John S. Williams)
 * Manufactures (Chairman: Robert M. La Follette; Ranking Member: Ellison D. Smith)
 * Military Affairs (Chairman: James W. Wadsworth Jr.; Ranking Member: George E. Chamberlain)
 * Mines and Mining (Chairman: Miles Poindexter; Ranking Member: Charles B. Henderson)
 * Mississippi River and its Tributaries (Select) (Chairman: Joseph E. Ransdell; Ranking Member: Albert B. Cummins)
 * National Banks (Chairman: Frank B. Kellogg; Ranking Member: Peter G. Gerry)
 * Naval Affairs (Chairman: Carroll S. Page; Ranking Member: Claude A. Swanson)
 * Pacific Islands, Puerto Rico and the Virgin Islands (Chairman: Albert B. Fall; Ranking Member: Morris Sheppard)
 * Pacific Railroads (Chairman: Charles S. Thomas; Ranking Member: Frank B. Brandegee)
 * Patents (Chairman: George W. Norris; Ranking Member: William F. Kirby)
 * Pensions (Chairman: Porter J. McCumber; Ranking Member: Thomas J. Walsh)
 * Philippines (Chairman: Warren G. Harding; Ranking Member: Duncan U. Fletcher)
 * Post Office and Post Roads (Chairman: Charles E. Townsend; Ranking Member: John H. Bankhead)
 * Printing (Chairman: George H. Moses; Ranking Member: Marcus A. Smith)
 * Private Land Claims (Chairman: Charles A. Culberson; Ranking Member: Knute Nelson)
 * Privileges and Elections (Chairman: William P. Dillingham; Ranking Member: Atlee Pomerene)
 * Public Buildings and Grounds (Chairman: Bert M. Fernald; Ranking Member: James A. Reed)
 * Public Health and National Quarantine (Chairman: Joseph I. France; Ranking Member: Joseph E. Ransdell)
 * Public Lands (Chairman: Reed Smoot; Ranking Member: Henry L. Myers)
 * Railroads (Chairman: Irvine L. Lenroot; Ranking Member: Peter G. Gerry)
 * Reconstruction and Production (Select)
 * Revision of the Laws (Chairman: N/A; Ranking Member: N/A)
 * Revolutionary Claims (Chairman: Morris Sheppard; Ranking Member: Henry Cabot Lodge)
 * Rules (Chairman: Philander C. Knox; Ranking Member: Lee S. Overman)
 * Standards, Weights and Measures (Chairman: William S. Kenyon; Ranking Member: Warren G. Harding)
 * Tariff Regulation (Select)
 * Territories (Chairman: Harry S. New; Ranking Member: Key Pittman)
 * Transportation and Sale of Meat Products (Select) (Chairman: Duncan U. Fletcher; Ranking Member: Porter J. McCumber)
 * Transportation Routes to the Seaboard (Chairman: Duncan U. Fletcher; Ranking Member: William P. Dillingham)
 * Trespassers upon Indian Lands (Select) (Chairman: Henry F. Ashurst; Ranking Member: Wesley L. Jones)
 * Whole
 * Woman Suffrage (Chairman: James Eli Watson; Ranking Member: Andrieus A. Jones)

House of Representatives

 * Accounts (Chairman: Clifford Ireland; Ranking Member: Frank Park)
 * Agriculture (Chairman: Gilbert N. Haugen; Ranking Member: Gordon Lee)
 * Alcoholic Liquor Traffic (Chairman: Addison T. Smith; Ranking Member: William D. Upshaw)
 * Appropriations (Chairman: James W. Good; Ranking Member: Joseph W. Byrns)
 * Banking and Currency (Chairman: Edmund Platt; Ranking Member: Michael F. Phelan)
 * Budget (Select) (Chairman: James W. Good; Ranking Member: Joseph W. Byrns)
 * Census (Chairman: Charles A. Nichols; Ranking Member: James B. Aswell)
 * Claims (Chairman: George W. Edmonds; Ranking Member: Henry B. Steagall)
 * Coinage, Weights and Measures (Chairman: Albert H. Vestal; Ranking Member: William A. Ashbrook)
 * Disposition of Executive Papers (Chairman: Merrill Moores)
 * District of Columbia (Chairman: Carl E. Mapes; Ranking Member: Ben Johnson)
 * Education (Chairman: Simeon D. Fess; Ranking Member: William J. Sears)
 * Election of the President, Vice President and Representatives in Congress (Chairman: Florian Lampert; Ranking Member: William W. Rucker)
 * Elections No.#1 (Chairman: Frederick W. Dallinger; Ranking Member: Joe H. Eagle)
 * Elections No.#2 (Chairman: Louis B. Goodall; Ranking Member: James W. Overstreet)
 * Elections No.#3 (Chairman: Cassius C. Dowell; Ranking Member: Joseph Rowan)
 * Enrolled Bills (Chairman: John R. Ramsey; Ranking Member: Ladislas Lazaro)
 * Expenditures in the Agriculture Department (Chairman: John M. Baer; Ranking Member: Robert L. Doughton)
 * Expenditures in the Commerce Department (Chairman: Thomas Sutler Williams; Ranking Member: Michael F. Phelan)
 * Expenditures in the Interior Department (Chairman: Aaron S. Kreider; Ranking Member: William F. Stevenson)
 * Expenditures in the Justice Department (Chairman: Wallace H. White Jr.; Ranking Member: James P. Buchanan)
 * Expenditures in the Labor Department (Chairman: Anderson H. Walters; Ranking Member: John J. Casey)
 * Expenditures in the Navy Department (Chairman: Leonard S. Echols; Ranking Member: Rufus Hardy)
 * Expenditures in the Post Office Department (Chairman: Frederick N. Zihlman; Ranking Member: Benjamin G. Humphreys)
 * Expenditures in the State Department (Chairman: Richard N. Elliott; Ranking Member: Clement Brumbaugh)
 * Expenditures in the Treasury Department (Chairman: Porter H. Dale; Ranking Member: Charles D. Carter)
 * Expenditures in the War Department (Chairman: William J. Graham; Ranking Member: Jerome F. Donovan)
 * Expenditures on Public Buildings (Chairman: Ira G. Hersey; Ranking Member: Ezekiel S. Candler Jr.)
 * Flood Control (Chairman: William A. Rodenberg; Ranking Member: Benjamin G. Humphreys)
 * Foreign Affairs (Chairman: Stephen G. Porter; Ranking Member: Henry D. Flood)
 * Immigration and Naturalization (Chairman: Albert Johnson; Ranking Member: Adolph J. Sabath)
 * Indian Affairs (Chairman: Philip P. Campbell; Ranking Member: Charles D. Carter)
 * Industrial Arts and Expositions (Chairman: Oscar E. Bland; Ranking Member: Isaac R. Sherwood)
 * Insular Affairs (Chairman: Horace M. Towner; Ranking Member: Finis J. Garrett)
 * Interstate and Foreign Commerce (Chairman: John J. Esch; Ranking Member: Thetus W. Sims)
 * Invalid Pensions (Chairman: Charles E. Fuller; Ranking Member: Isaac R. Sherwood)
 * Investigate Contracts and Expenditures Made by the War Department during the War (Select) (Chairman: N/A; Ranking Member: N/A)
 * Irrigation of Arid Lands (Chairman: Moses P. Kinkaid; Ranking Member: Edward T. Taylor)
 * Judiciary (Chairman: Andrew J. Volstead; Ranking Member: Robert Y. Thomas Jr.)
 * Labor (Chairman: John M. C. Smith; Ranking Member: James P. Maher)
 * Library (Chairman: Norman J. Gould; Ranking Member: Ben Johnson)
 * Merchant Marine and Fisheries (Chairman: William S. Greene; Ranking Member: Rufus Hardy)
 * Mileage (Chairman: John A. Elston; Ranking Member: James P. Maher)
 * Military Affairs (Chairman: Julius Kahn; Ranking Member: S. Hubert Dent Jr.)
 * Mines and Mining (Chairman: Mahlon M. Garland; Ranking Member: Otis Wingo)
 * Naval Affairs (Chairman: Thomas S. Butler; Ranking Member: Lemuel P. Padgett)
 * Patents (Chairman: John I. Nolan; Ranking Member: Guy E. Campbell)
 * Pensions (Chairman: Sam R. Sells; Ranking Member: James M. Mead)
 * Post Office and Post Roads (Chairman: Halvor Steenerson; Ranking Member: John A. Moon)
 * Printing (Chairman: Edgar R. Kiess; Ranking Member: James V. McClintic)
 * Public Buildings and Grounds (Chairman: John W. Langley; Ranking Member: Frank Clark)
 * Public Lands (Chairman: Nicholas J. Sinnott; Ranking Member: Scott Ferris)
 * Railways and Canals (Chairman: Loren E. Wheeler; Ranking Member: Benjamin F. Welty)
 * Reform in the Civil Service (Chairman: Frederick R. Lehlbach; Ranking Member: Hannibal L. Godwin)
 * Revision of Laws (Chairman: Edward C. Little; Ranking Member: John T. Watkins)
 * Rivers and Harbors (Chairman: Charles A. Kennedy; Ranking Member: John H. Small)
 * Roads (Chairman: Thomas B. Dunn; Ranking Member: Edward W. Saunders)
 * Rules (Chairman: Philip P. Campbell; Ranking Member: Edward W. Pou)
 * Standards of Official Conduct
 * Territories (Chairman: Charles F. Curry; Ranking Member: John T. Watkins)
 * United States Shipping Board Operations (Select) (Chairman: Joseph Walsh; Ranking Member: N/A)
 * War Claims (Chairman: Benjamin K. Focht; Ranking Member: Frank Clark)
 * Water Power (Special) (Chairman: John J. Esch; Ranking Member: Thetus W. Sims)
 * Ways and Means (Chairman: Joseph W. Fordney; Ranking Member: Claude Kitchin)
 * Woman Suffrage (Chairman: James Robert Mann; Ranking Member: John E. Raker)
 * Whole

Joint committees

 * Conditions of Indian Tribes (Special)
 * Disposition of (Useless) Executive Papers
 * High Cost of Living
 * The Library (Chairman: Sen. Frank B. Brandegee)
 * Pacific Coast Naval Bases
 * Postal Salaries
 * Postal Service
 * Printing (Chairman: Sen. Reed Smoot)
 * Reclassification of Salaries
 * Reorganization
 * Reorganization of the Administrative Branch of the Government
 * Three Hundredth Anniversary of the Landing of the Pilgrims
 * To Investigate the System of Shortime Rural Credits

Caucuses

 * Democratic (House)
 * Democratic (Senate)

Legislative branch agency directors

 * Architect of the Capitol: Elliott Woods
 * Librarian of Congress: Herbert Putnam
 * Public Printer of the United States: Cornelius Ford

Senate

 * Chaplain: F.J. Prettyman (Methodist), until January 21, 1921.
 * John J. Muir (Baptist), from January 21, 1921.
 * Secretary: James M. Baker, until May 19, 1919.
 * George A. Sanderson, from May 19, 1919.
 * Librarian: Edward C. Goodwin
 * Sergeant at Arms: Charles P. Higgins, until May 19, 1919.
 * David S. Barry, from May 19, 1919.

House of Representatives

 * Chaplain: Henry N. Couden (Universalist)
 * Clerk: South Trimble, until May 19, 1919
 * William T. Page, from May 19, 1919
 * Doorkeeper: Bert W. Kennedy
 * Clerk at the Speaker's Table: Clarence A. Cannon
 * Lehr Fess
 * Reading Clerks: Patrick Joseph Haltigan (D) and Alney E. Chaffee (R)
 * Postmaster: Frank W. Collier
 * Sergeant at Arms: Robert B. Gordon, until May 19, 1919
 * Joseph G. Rodgers, from May 19, 1919