89th United States Congress

The 89th United States Congress was a meeting of the legislative branch of the United States federal government, composed of the United States Senate and the United States House of Representatives. It met in Washington, D.C., from January 3, 1965, to January 3, 1967, during the second and third years of Lyndon B. Johnson's presidency. The apportionment of seats in the House of Representatives was based on the 1960 United States census.

Both chambers had a Democratic supermajority, and with the election of President Lyndon B. Johnson to his own term in office, maintaining an overall federal government trifecta. This is the last time Democrats or any party had a 2/3rd supermajority in the Senate.

The 89th Congress is regarded as "arguably the most productive in American history". Some of its landmark legislation includes Social Security Amendments of 1965 (the creation of Medicare and Medicaid), the Voting Rights Act, Higher Education Act, Immigration and Nationality Act of 1965, Elementary and Secondary Education Act and the Freedom of Information Act.

Major events

 * January 4, 1965: President Johnson proclaimed his "Great Society" during his State of the Union Address.
 * January 20, 1965: Inauguration of President Lyndon B. Johnson for a full term.
 * November 8, 1966: United States elections, 1966, including:
 * United States Senate elections, 1966
 * United States House of Representatives elections, 1966

Major legislation



 * April 11, 1965: Elementary and Secondary Education Act,
 * July 27, 1965: Federal Cigarette Labeling and Advertising Act,
 * July 30, 1965: Social Security Act of 1965, (including Medicaid and Medicare)
 * August 6, 1965: Voting Rights Act,
 * August 10, 1965: Housing and Urban Development Act of 1965,
 * August 26, 1965: Public Works and Economic Development Act of 1965,
 * September 9, 1965 Department of Housing and Urban Development Act, ,
 * September 29, 1965: National Foundation on the Arts and the Humanities Act,
 * October 3, 1965: Immigration and Nationality Act of 1965, (Hart-Celler Act, INS Act)
 * October 6, 1965: Heart Disease, Cancer, and Stroke Amendments,
 * October 20, 1965: Motor Vehicle Air Pollution Control Act, (including Solid Waste Disposal Act)
 * October 22, 1965: Highway Beautification Act,
 * November 8, 1965: Higher Education Act,
 * November 8, 1965: Vocational Rehabilitation Act Amendments
 * August 26, 1966: Laboratory Animal Welfare Act Now called the Animal Welfare Act
 * April 13, 1966: Uniform Time Act,
 * July 13, 1966: Cotton Research and Promotion Act,
 * September 6, 1966:, which (among other things) enacted what is now called the Freedom of Information Act
 * September 9, 1966: National Traffic and Motor Vehicle Safety Act,
 * September 9, 1966: Highway Safety Act,
 * October 15, 1966: National Historic Preservation Act,
 * October 15, 1966: National Wildlife Refuge System Administration Act of 1966,
 * October 15, 1966: Department of Transportation Act,
 * November 2, 1966: Cuban Adjustment Act,
 * November 3, 1966: Comprehensive Health, Planning and Service Act,

Constitutional amendments

 * July 6, 1965: Approved an amendment to the United States Constitution addressing succession to the presidency and establishing procedures both for filling a vacancy in the office of the vice president, and for responding to presidential disabilities, and submitted it to the state legislatures for ratification
 * Amendment was later ratified on February 10, 1967, becoming the 25th Amendment to the United States Constitution

Party summary
The count below identifies party affiliations at the beginning of the first session of this Congress, and includes members from vacancies and newly admitted states, when they were first seated. Changes resulting from subsequent replacements are shown below in the "Changes in membership" section.

House of Representatives
[[File:89 us house membership.png|thumb|400px|

Senate

 * President: Hubert Humphrey (D), starting January 20, 1965
 * President pro tempore: Carl Hayden (D)
 * Permanent Acting President pro tempore: Lee Metcalf (D)

Majority (Democratic) leadership

 * Majority Leader and Democratic Conference Chairman: Mike Mansfield
 * Majority Whip: Russell B. Long
 * Caucus Secretary: George Smathers

Minority (Republican) leadership

 * Minority Leader: Everett Dirksen
 * Minority Whip: Thomas Kuchel
 * Republican Conference Chairman: Leverett Saltonstall
 * Republican Conference Secretary: Milton Young
 * National Senatorial Committee Chair: Thruston Ballard Morton
 * Policy Committee Chairman: Bourke B. Hickenlooper

House of Representatives

 * Speaker: John W. McCormack (D)

Majority (Democratic) leadership

 * Majority Leader: Carl Albert
 * Majority Whip: Hale Boggs
 * Democratic Caucus Chairman: Eugene James Keogh
 * Democratic Caucus Secretary: Leonor Sullivan
 * Democratic Campaign Committee Chairman: Michael J. Kirwan

Minority (Republican) leadership

 * Minority Leader: Gerald Ford
 * Minority Whip: Leslie C. Arends
 * Republican Conference Chairman: Melvin Laird
 * Policy Committee Chairman: John Jacob Rhodes
 * Republican Campaign Committee Chairman: Bob Wilson

Caucuses

 * House Democratic Caucus
 * Senate Democratic Caucus

Members
This list is arranged by chamber, then by state. Senators are listed in order of seniority, and representatives are listed by district.

Senate
Senators are popularly elected statewide every two years, with one-third beginning new six-year terms with each Congress. Preceding the names in the list below are Senate class numbers, which indicate the cycle of their election. In this Congress, Class 1 meant their term began in this Congress, requiring reelection in 1970; Class 2 meant their term ended with this Congress, requiring reelection in 1966; and Class 3 meant their term began in the last Congress, requiring reelection in 1968.

Alabama

 * 3. J. Lister Hill (D)
 * 2. John J. Sparkman (D)

Alaska

 * 2. Bob Bartlett (D)
 * 3. Ernest Gruening (D)

Arizona

 * 3. Carl Hayden (D)
 * 1. Paul Fannin (R)

Arkansas

 * 2. John L. McClellan (D)
 * 3. J. William Fulbright (D)

California

 * 3. Thomas Kuchel (R)
 * 1. George Murphy (R)

Colorado

 * 2. Gordon Allott (R)
 * 3. Peter H. Dominick (R)

Connecticut

 * 1. Thomas J. Dodd (D)
 * 3. Abraham Ribicoff (D)

Delaware

 * 1. John J. Williams (R)
 * 2. J. Caleb Boggs (R)

Florida

 * 1. Spessard Holland (D)
 * 3. George Smathers (D)

Georgia

 * 2. Richard Russell Jr. (D)
 * 3. Herman Talmadge (D)

Hawaii

 * 1. Hiram Fong (R)
 * 3. Daniel Inouye (D)

Idaho

 * 3. Frank Church (D)
 * 2. Leonard B. Jordan (R)

Illinois

 * 2. Paul Douglas (D)
 * 3. Everett M. Dirksen (R)

Indiana

 * 1. Vance Hartke (D)
 * 3. Birch Bayh (D)

Iowa

 * 3. Bourke B. Hickenlooper (R)
 * 2. Jack Miller (R)

Kansas

 * 3. Frank Carlson (R)
 * 2. James B. Pearson (R)

Kentucky

 * 2. John Sherman Cooper (R)
 * 3. Thruston Ballard Morton (R)

Louisiana

 * 2. Allen J. Ellender (D)
 * 3. Russell B. Long (D)

Maine

 * 2. Margaret Chase Smith (R)
 * 1. Edmund Muskie (D)

Maryland

 * 3. Daniel Brewster (D)
 * 1. Joseph Tydings (D)

Massachusetts

 * 2. Leverett Saltonstall (R)
 * 1. Ted Kennedy (D)

Michigan

 * 2. Patrick V. McNamara (D), until April 30, 1966
 * Robert P. Griffin (R), from May 11, 1966
 * 1. Philip Hart (D)

Minnesota

 * 1. Eugene McCarthy (DFL)
 * 2. Walter Mondale (DFL)

Mississippi

 * 2. James Eastland (D)
 * 1. John C. Stennis (D)

Missouri

 * 1. Stuart Symington (D)
 * 3. Edward V. Long (D)

Montana

 * 1. Mike Mansfield (D)
 * 2. Lee Metcalf (D)

Nebraska

 * 1. Roman Hruska (R)
 * 2. Carl Curtis (R)

Nevada

 * 3. Alan Bible (D)
 * 1. Howard Cannon (D)

New Hampshire

 * 3. Norris Cotton (R)
 * 2. Thomas J. McIntyre (D)

New Jersey

 * 2. Clifford P. Case (R)
 * 1. Harrison A. Williams (D)

New Mexico

 * 2. Clinton P. Anderson (D)
 * 1. Joseph Montoya (D)

New York

 * 3. Jacob Javits (R)
 * 1. Robert F. Kennedy (D)

North Carolina

 * 3. Sam Ervin (D)
 * 2. B. Everett Jordan (D)

North Dakota

 * 3. Milton Young (R)
 * 1. Quentin Burdick (D-NPL)

Ohio

 * 3. Frank Lausche (D)
 * 1. Stephen M. Young (D)

Oklahoma

 * 3. A. S. Mike Monroney (D)
 * 2. Fred R. Harris (D)

Oregon

 * 3. Wayne Morse (D)
 * 2. Maurine Neuberger (D)

Pennsylvania

 * 3. Joseph S. Clark Jr. (D)
 * 1. Hugh Scott (R)

Rhode Island

 * 1. John Pastore (D)
 * 2. Claiborne Pell (D)

South Carolina

 * 3. Olin D. Johnston (D), until April 18, 1965
 * Donald S. Russell (D), from April 22, 1965 – November 8, 1966
 * Fritz Hollings (D), from November 9, 1966
 * 2. Strom Thurmond (R)

South Dakota

 * 2. Karl E. Mundt (R)
 * 3. George McGovern (D)

Tennessee

 * 1. Albert Gore Sr. (D)
 * 2. Ross Bass (D), until January 2, 1967

Texas

 * 1. Ralph Yarborough (D)
 * 2. John Tower (R)

Utah

 * 3. Wallace F. Bennett (R)
 * 1. Frank Moss (D)

Vermont

 * 3. George Aiken (R)
 * 1. Winston L. Prouty (R)

Virginia

 * 1. Harry F. Byrd (D), until November 10, 1965
 * Harry F. Byrd Jr. (D), from November 12, 1965
 * 2. A. Willis Robertson (D), until December 30, 1966
 * William B. Spong Jr. (D), from December 31, 1966

Washington

 * 3. Warren G. Magnuson (D)
 * 1. Henry M. Jackson (D)

West Virginia

 * 2. Jennings Randolph (D)
 * 1. Robert Byrd (D)

Wisconsin

 * 1. William Proxmire (D)
 * 3. Gaylord Nelson (D)

Wyoming

 * 1. Gale W. McGee (D)
 * 2. Milward Simpson (R)





House of Representatives
Names of members are preceded by their district numbers.

Alabama

 * Alabama's 1st congressional district. Jack Edwards (R)
 * Alabama's 2nd congressional district. William Louis Dickinson (R)
 * Alabama's 3rd congressional district. George W. Andrews (D)
 * Alabama's 4th congressional district. Glenn Andrews (R)
 * Alabama's 5th congressional district. Armistead I. Selden Jr. (D)
 * Alabama's 6th congressional district. John Hall Buchanan Jr. (R)
 * Alabama's 7th congressional district. James D. Martin (R)
 * Alabama's 8th congressional district. Robert E. Jones Jr. (D)

Alaska

 * At-large. Ralph Julian Rivers (D), until December 30, 1966

Arizona

 * Arizona's 1st congressional district. John Jacob Rhodes (R)
 * Arizona's 2nd congressional district. Mo Udall (D)
 * Arizona's 3rd congressional district. George F. Senner Jr. (D)

Arkansas

 * Arkansas's 1st congressional district. Ezekiel C. Gathings (D)
 * Arkansas's 2nd congressional district. Wilbur Mills (D)
 * Arkansas's 3rd congressional district. James William Trimble (D)
 * Arkansas's 4th congressional district. Oren Harris (D), until February 3, 1966
 * David Pryor (D), from November 8, 1966

California

 * California's 1st congressional district. Donald H. Clausen (R)
 * California's 2nd congressional district. Harold T. Johnson (D)
 * California's 3rd congressional district. John E. Moss (D)
 * California's 4th congressional district. Robert L. Leggett (D)
 * California's 5th congressional district. Phillip Burton (D)
 * California's 6th congressional district. William S. Mailliard (R)
 * California's 7th congressional district. Jeffery Cohelan (D)
 * California's 8th congressional district. George P. Miller (D)
 * California's 9th congressional district. Don Edwards (D)
 * California's 10th congressional district. Charles Gubser (R)
 * California's 11th congressional district. J. Arthur Younger (R)
 * California's 12th congressional district. Burt Talcott (R)
 * California's 13th congressional district. Charles M. Teague (R)
 * California's 14th congressional district. John F. Baldwin Jr. (R), until March 9, 1966
 * Jerome Waldie (D), from June 7, 1966
 * California's 15th congressional district. John J. McFall (D)
 * California's 16th congressional district. B. F. Sisk (D)
 * California's 17th congressional district. Cecil R. King (D)
 * California's 18th congressional district. Harlan Hagen (D)
 * California's 19th congressional district. Chester E. Holifield (D)
 * California's 20th congressional district. H. Allen Smith (R)
 * California's 21st congressional district. Augustus Hawkins (D)
 * California's 22nd congressional district. James C. Corman (D)
 * California's 23rd congressional district. Del M. Clawson (R)
 * California's 24th congressional district. Glenard P. Lipscomb (R)
 * California's 25th congressional district. Ronald B. Cameron (D)
 * California's 26th congressional district. James Roosevelt (D), until September 30, 1965
 * Thomas M. Rees (D), from December 15, 1965
 * California's 27th congressional district. Edwin Reinecke (R)
 * California's 28th congressional district. Alphonzo E. Bell Jr. (R)
 * California's 29th congressional district. George Brown Jr. (D)
 * California's 30th congressional district. Edward R. Roybal (D)
 * California's 31st congressional district. Charles H. Wilson (D)
 * California's 32nd congressional district. Craig Hosmer (R)
 * California's 33rd congressional district. Kenneth W. Dyal (D)
 * California's 34th congressional district. Richard T. Hanna (D)
 * California's 35th congressional district. James B. Utt (R)
 * California's 36th congressional district. Bob Wilson (R)
 * California's 37th congressional district. Lionel Van Deerlin (D)
 * California's 38th congressional district. John V. Tunney (D)

Colorado

 * Colorado's 1st congressional district. Byron G. Rogers (D)
 * Colorado's 2nd congressional district. Roy H. McVicker (D)
 * Colorado's 3rd congressional district. Frank Evans (D)
 * Colorado's 4th congressional district. Wayne N. Aspinall (D)

Connecticut

 * Connecticut's 1st congressional district. Emilio Q. Daddario (D)
 * Connecticut's 2nd congressional district. William St. Onge (D)
 * Connecticut's 3rd congressional district. Robert Giaimo (D)
 * Connecticut's 4th congressional district. Donald J. Irwin (D)
 * Connecticut's 5th congressional district. John S. Monagan (D)
 * Connecticut's 6th congressional district. Bernard F. Grabowski (D)

Delaware

 * At-large. Harris McDowell (D)

Florida

 * Florida's 1st congressional district. Robert L. F. Sikes (D)
 * Florida's 2nd congressional district. Charles E. Bennett (D)
 * Florida's 3rd congressional district. Claude Pepper (D)
 * Florida's 4th congressional district. Dante Fascell (D)
 * Florida's 5th congressional district. Syd Herlong (D)
 * Florida's 6th congressional district. Paul Rogers (D)
 * Florida's 7th congressional district. James A. Haley (D)
 * Florida's 8th congressional district. Donald Ray Matthews (D)
 * Florida's 9th congressional district. Don Fuqua (D)
 * Florida's 10th congressional district. Sam Gibbons (D)
 * Florida's 11th congressional district. Edward Gurney (R)
 * Florida's 12th congressional district. William C. Cramer (R)

Georgia

 * Georgia's 1st congressional district. George Elliott Hagan (D)
 * Georgia's 2nd congressional district. Maston E. O'Neal Jr. (D)
 * Georgia's 3rd congressional district. Bo Callaway (R)
 * Georgia's 4th congressional district. James MacKay (D)
 * Georgia's 5th congressional district. Charles L. Weltner (D)
 * Georgia's 6th congressional district. John Flynt (D)
 * Georgia's 7th congressional district. John William Davis (D)
 * Georgia's 8th congressional district. J. Russell Tuten (D)
 * Georgia's 9th congressional district. Phillip M. Landrum (D)
 * Georgia's 10th congressional district. Robert Grier Stephens Jr. (D)

Hawaii

 * At-large. Spark Matsunaga (D)
 * At-large. Patsy Mink (D)

Idaho

 * Idaho's 1st congressional district. Compton I. White Jr. (D)
 * Idaho's 2nd congressional district. George V. Hansen (R)

Illinois

 * Illinois's 1st congressional district. William L. Dawson (D)
 * Illinois's 2nd congressional district. Barratt O'Hara (D)
 * Illinois's 3rd congressional district. William T. Murphy (D)
 * Illinois's 4th congressional district. Ed Derwinski (R)
 * Illinois's 5th congressional district. John C. Kluczynski (D)
 * Illinois's 6th congressional district. Daniel J. Ronan (D)
 * Illinois's 7th congressional district. Frank Annunzio (D)
 * Illinois's 8th congressional district. Dan Rostenkowski (D)
 * Illinois's 9th congressional district. Sidney R. Yates (D)
 * Illinois's 10th congressional district. Harold R. Collier (R)
 * Illinois's 11th congressional district. Roman Pucinski (D)
 * Illinois's 12th congressional district. Robert McClory (R)
 * Illinois's 13th congressional district. Donald Rumsfeld (R)
 * Illinois's 14th congressional district. John N. Erlenborn (R)
 * Illinois's 15th congressional district. Charlotte Thompson Reid (R)
 * Illinois's 16th congressional district. John B. Anderson (R)
 * Illinois's 17th congressional district. Leslie C. Arends (R)
 * Illinois's 18th congressional district. Robert H. Michel (R)
 * Illinois's 19th congressional district. Gale Schisler (D)
 * Illinois's 20th congressional district. Paul Findley (R)
 * Illinois's 21st congressional district. Kenneth J. Gray (D)
 * Illinois's 22nd congressional district. William L. Springer (R)
 * Illinois's 23rd congressional district. George E. Shipley (D)
 * Illinois's 24th congressional district. Melvin Price (D)

Indiana

 * Indiana's 1st congressional district. Ray Madden (D)
 * Indiana's 2nd congressional district. Charles A. Halleck (R)
 * Indiana's 3rd congressional district. John Brademas (D)
 * Indiana's 4th congressional district. E. Ross Adair (R)
 * Indiana's 5th congressional district. J. Edward Roush (D)
 * Indiana's 6th congressional district. Richard L. Roudebush (R)
 * Indiana's 7th congressional district. William G. Bray (R)
 * Indiana's 8th congressional district. Winfield K. Denton (D), until December 30, 1966
 * Indiana's 9th congressional district. Lee H. Hamilton (D)
 * Indiana's 10th congressional district. Ralph Harvey (R), until December 30, 1966
 * Indiana's 11th congressional district. Andrew Jacobs Jr. (D)

Iowa

 * Iowa's 1st congressional district. John R. Schmidhauser (D)
 * Iowa's 2nd congressional district. John Culver (D)
 * Iowa's 3rd congressional district. H. R. Gross (R)
 * Iowa's 4th congressional district. Bert Bandstra (D)
 * Iowa's 5th congressional district. Neal Edward Smith (D)
 * Iowa's 6th congressional district. Stanley L. Greigg (D)
 * Iowa's 7th congressional district. John R. Hansen (D)

Kansas

 * Kansas's 1st congressional district. Bob Dole (R)
 * Kansas's 2nd congressional district. Chester L. Mize (R)
 * Kansas's 3rd congressional district. Robert Ellsworth (R)
 * Kansas's 4th congressional district. Garner E. Shriver (R)
 * Kansas's 5th congressional district. Joe Skubitz (R)

Kentucky

 * Kentucky's 1st congressional district. Frank Stubblefield (D)
 * Kentucky's 2nd congressional district. William Natcher (D)
 * Kentucky's 3rd congressional district. Charles R. Farnsley (D)
 * Kentucky's 4th congressional district. Frank Chelf (D)
 * Kentucky's 5th congressional district. Tim Lee Carter (R)
 * Kentucky's 6th congressional district. John C. Watts (D)
 * Kentucky's 7th congressional district. Carl D. Perkins (D)

Louisiana

 * Louisiana's 1st congressional district. F. Edward Hébert (D)
 * Louisiana's 2nd congressional district. Hale Boggs (D)
 * Louisiana's 3rd congressional district. Edwin E. Willis (D)
 * Louisiana's 4th congressional district. Joe Waggonner (D)
 * Louisiana's 5th congressional district. Otto Passman (D)
 * Louisiana's 6th congressional district. James H. Morrison (D)
 * Louisiana's 7th congressional district. T. Ashton Thompson (D), until July 1, 1965
 * Edwin Edwards (D), from October 2, 1965
 * Louisiana's 8th congressional district. Speedy Long (D)

Maine

 * Maine's 1st congressional district. Stanley R. Tupper (R)
 * Maine's 2nd congressional district. William Hathaway (D)

Maryland

 * Maryland's 1st congressional district. Rogers Morton (R)
 * Maryland's 2nd congressional district. Clarence Long (D)
 * Maryland's 3rd congressional district. Edward Garmatz (D)
 * Maryland's 4th congressional district. George Hyde Fallon (D)
 * Maryland's 5th congressional district. Hervey Machen (D)
 * Maryland's 6th congressional district. Charles Mathias (R)
 * Maryland's 7th congressional district. Samuel Friedel (D)
 * At-large. Carlton R. Sickles (D)

Massachusetts

 * Massachusetts's 1st congressional district. Silvio O. Conte (R)
 * Massachusetts's 2nd congressional district. Edward Boland (D)
 * Massachusetts's 3rd congressional district. Philip J. Philbin (D)
 * Massachusetts's 4th congressional district. Harold Donohue (D)
 * Massachusetts's 5th congressional district. F. Bradford Morse (R)
 * Massachusetts's 6th congressional district. William H. Bates (R)
 * Massachusetts's 7th congressional district. Torbert Macdonald (D)
 * Massachusetts's 8th congressional district. Tip O'Neill (D)
 * Massachusetts's 9th congressional district. John W. McCormack (D)
 * Massachusetts's 10th congressional district. Joseph W. Martin Jr. (R)
 * Massachusetts's 11th congressional district. James A. Burke (D)
 * Massachusetts's 12th congressional district. Hastings Keith (R)

Michigan

 * Michigan's 1st congressional district. John Conyers (D)
 * Michigan's 2nd congressional district. Weston E. Vivian (D)
 * Michigan's 3rd congressional district. Paul H. Todd Jr. (D)
 * Michigan's 4th congressional district. J. Edward Hutchinson (R)
 * Michigan's 5th congressional district. Gerald Ford (R)
 * Michigan's 6th congressional district. Charles E. Chamberlain (R)
 * Michigan's 7th congressional district. John C. Mackie (D)
 * Michigan's 8th congressional district. R. James Harvey (R)
 * Michigan's 9th congressional district. Robert P. Griffin (R), until May 10, 1966
 * Guy Vander Jagt (R), from November 8, 1966
 * Michigan's 10th congressional district. Elford Albin Cederberg (R)
 * Michigan's 11th congressional district. Raymond F. Clevenger (D)
 * Michigan's 12th congressional district. James G. O'Hara (D)
 * Michigan's 13th congressional district. Charles Diggs (D)
 * Michigan's 14th congressional district. Lucien Nedzi (D)
 * Michigan's 15th congressional district. William D. Ford (D)
 * Michigan's 16th congressional district. John D. Dingell Jr. (D)
 * Michigan's 17th congressional district. Martha Griffiths (D)
 * Michigan's 18th congressional district. William Broomfield (R)
 * Michigan's 19th congressional district. Billie S. Farnum (D)

Minnesota

 * Minnesota's 1st congressional district. Al Quie (R)
 * Minnesota's 2nd congressional district. Ancher Nelsen (R)
 * Minnesota's 3rd congressional district. Clark MacGregor (R)
 * Minnesota's 4th congressional district. Joseph Karth (DFL)
 * Minnesota's 5th congressional district. Donald M. Fraser (DFL)
 * Minnesota's 6th congressional district. Alec G. Olson (DFL)
 * Minnesota's 7th congressional district. Odin Langen (R)
 * Minnesota's 8th congressional district. John Blatnik (DFL)

Mississippi

 * Mississippi's 1st congressional district. Thomas Abernethy (D)
 * Mississippi's 2nd congressional district. Jamie L. Whitten (D)
 * Mississippi's 3rd congressional district. John Bell Williams (D)
 * Mississippi's 4th congressional district. Prentiss Walker (R)
 * Mississippi's 5th congressional district. William M. Colmer (D)

Missouri

 * Missouri's 1st congressional district. Frank M. Karsten (D)
 * Missouri's 2nd congressional district. Thomas B. Curtis (R)
 * Missouri's 3rd congressional district. Leonor Sullivan (D)
 * Missouri's 4th congressional district. William J. Randall (D)
 * Missouri's 5th congressional district. Richard Walker Bolling (D)
 * Missouri's 6th congressional district. William Raleigh Hull Jr. (D)
 * Missouri's 7th congressional district. Durward Gorham Hall (R)
 * Missouri's 8th congressional district. Richard Howard Ichord Jr. (D)
 * Missouri's 9th congressional district. William L. Hungate (D)
 * Missouri's 10th congressional district. Paul C. Jones (D)

Montana

 * Montana's 1st congressional district. Arnold Olsen (D)
 * Montana's 2nd congressional district. James F. Battin (R)

Nebraska

 * Nebraska's 1st congressional district. Clair Armstrong Callan (D)
 * Nebraska's 2nd congressional district. Glenn Cunningham (R)
 * Nebraska's 3rd congressional district. David Martin (R)

Nevada

 * At-large. Walter S. Baring Jr. (D)

New Hampshire

 * New Hampshire's 1st congressional district. Joseph Oliva Huot (D)
 * New Hampshire's 2nd congressional district. James Colgate Cleveland (R)

New Jersey

 * New Jersey's 1st congressional district. William T. Cahill (R)
 * New Jersey's 2nd congressional district. Thomas C. McGrath Jr. (D)
 * New Jersey's 3rd congressional district. James J. Howard (D)
 * New Jersey's 4th congressional district. Frank Thompson (D)
 * New Jersey's 5th congressional district. Peter Frelinghuysen Jr. (R)
 * New Jersey's 6th congressional district. Florence P. Dwyer (R)
 * New Jersey's 7th congressional district. William B. Widnall (R)
 * New Jersey's 8th congressional district. Charles Samuel Joelson (D)
 * New Jersey's 9th congressional district. Henry Helstoski (D)
 * New Jersey's 10th congressional district. Peter W. Rodino (D)
 * New Jersey's 11th congressional district. Joseph Minish (D)
 * New Jersey's 12th congressional district. Paul J. Krebs (D)
 * New Jersey's 13th congressional district. Cornelius Gallagher (D)
 * New Jersey's 14th congressional district. Dominick V. Daniels (D)
 * New Jersey's 15th congressional district. Edward J. Patten (D)

New Mexico

 * New Mexico's at-large congressional district. Thomas G. Morris (D)
 * New Mexico's at-large congressional district. E. S. Johnny Walker (D)

New York

 * New York's 1st congressional district. Otis G. Pike (D)
 * New York's 2nd congressional district. James R. Grover Jr. (R)
 * New York's 3rd congressional district. Lester L. Wolff (D)
 * New York's 4th congressional district. John W. Wydler (R)
 * New York's 5th congressional district. Herbert Tenzer (D)
 * New York's 6th congressional district. Seymour Halpern (R)
 * New York's 7th congressional district. Joseph P. Addabbo (D)
 * New York's 8th congressional district. Benjamin Stanley Rosenthal (D)
 * New York's 9th congressional district. James J. Delaney (D)
 * New York's 10th congressional district. Emanuel Celler (D)
 * New York's 11th congressional district. Eugene J. Keogh (D)
 * New York's 12th congressional district. Edna F. Kelly (D)
 * New York's 13th congressional district. Abraham J. Multer (D)
 * New York's 14th congressional district. John J. Rooney (D)
 * New York's 15th congressional district. Hugh Carey (D)
 * New York's 16th congressional district. John M. Murphy (D)
 * New York's 17th congressional district. John Lindsay (R), until December 31, 1965
 * Theodore R. Kupferman (R), from February 8, 1966
 * New York's 18th congressional district. Adam Clayton Powell Jr. (D)
 * New York's 19th congressional district. Leonard Farbstein (D)
 * New York's 20th congressional district. William Fitts Ryan (D)
 * New York's 21st congressional district. James H. Scheuer (D)
 * New York's 22nd congressional district. Jacob H. Gilbert (D)
 * New York's 23rd congressional district. Jonathan Brewster Bingham (D)
 * New York's 24th congressional district. Paul A. Fino (R)
 * New York's 25th congressional district. Richard Ottinger (D)
 * New York's 26th congressional district. Ogden Reid (R)
 * New York's 27th congressional district. John G. Dow (D)
 * New York's 28th congressional district. Joseph Y. Resnick (D)
 * New York's 29th congressional district. Leo W. O'Brien (D), until December 30, 1966
 * New York's 30th congressional district. Carleton J. King (R)
 * New York's 31st congressional district. Robert C. McEwen (R)
 * New York's 32nd congressional district. Alexander Pirnie (R)
 * New York's 33rd congressional district. Howard W. Robison (R)
 * New York's 34th congressional district. James M. Hanley (D)
 * New York's 35th congressional district. Samuel S. Stratton (D)
 * New York's 36th congressional district. Frank Horton (R)
 * New York's 37th congressional district. Barber Conable (R)
 * New York's 38th congressional district. Charles Goodell (R)
 * New York's 39th congressional district. Richard D. McCarthy (D)
 * New York's 40th congressional district. Henry P. Smith III (R)
 * New York's 41st congressional district. Thaddeus J. Dulski (D)

North Carolina

 * North Carolina's 1st congressional district. Herbert Covington Bonner (D), until November 7, 1965
 * Walter B. Jones Sr. (D), from February 5, 1966
 * North Carolina's 2nd congressional district. Lawrence H. Fountain (D)
 * North Carolina's 3rd congressional district. David N. Henderson (D)
 * North Carolina's 4th congressional district. Harold D. Cooley (D), until December 30, 1966
 * North Carolina's 5th congressional district. Ralph James Scott (D)
 * North Carolina's 6th congressional district. Horace R. Kornegay (D)
 * North Carolina's 7th congressional district. Alton Lennon (D)
 * North Carolina's 8th congressional district. Charles R. Jonas (R)
 * North Carolina's 9th congressional district. Jim Broyhill (R)
 * North Carolina's 10th congressional district. Basil Lee Whitener (D)
 * North Carolina's 11th congressional district. Roy A. Taylor (D)

North Dakota

 * North Dakota's 1st congressional district. Mark Andrews (R)
 * North Dakota's 2nd congressional district. Rolland W. Redlin (D-NPL)

Ohio

 * Ohio's 1st congressional district. John J. Gilligan (D)
 * Ohio's 2nd congressional district. Donald D. Clancy (R)
 * Ohio's 3rd congressional district. Rodney M. Love (D)
 * Ohio's 4th congressional district. William Moore McCulloch (R)
 * Ohio's 5th congressional district. Del Latta (R)
 * Ohio's 6th congressional district. Bill Harsha (R)
 * Ohio's 7th congressional district. Clarence J. Brown (R), until August 23, 1965
 * Bud Brown (R) from November 2, 1965
 * Ohio's 8th congressional district. Jackson Edward Betts (R)
 * Ohio's 9th congressional district. Thomas L. Ashley (D)
 * Ohio's 10th congressional district. Walter H. Moeller (D)
 * Ohio's 11th congressional district. J. William Stanton (R)
 * Ohio's 12th congressional district. Samuel L. Devine (R)
 * Ohio's 13th congressional district. Charles Adams Mosher (R)
 * Ohio's 14th congressional district. William Hanes Ayres (R)
 * Ohio's 15th congressional district. Robert T. Secrest (D), until December 30, 1966
 * Ohio's 16th congressional district. Frank T. Bow (R)
 * Ohio's 17th congressional district. John M. Ashbrook (R)
 * Ohio's 18th congressional district. Wayne Hays (D)
 * Ohio's 19th congressional district. Michael J. Kirwan (D)
 * Ohio's 20th congressional district. Michael A. Feighan (D)
 * Ohio's 21st congressional district. Charles Vanik (D)
 * Ohio's 22nd congressional district. Frances P. Bolton (R)
 * Ohio's 23rd congressional district. William Edwin Minshall Jr. (R)
 * At-large. Robert E. Sweeney (D)

Oklahoma

 * Oklahoma's 1st congressional district. Page Belcher (R)
 * Oklahoma's 2nd congressional district. Ed Edmondson (D)
 * Oklahoma's 3rd congressional district. Carl Albert (D)
 * Oklahoma's 4th congressional district. Tom Steed (D)
 * Oklahoma's 5th congressional district. John Jarman (D)
 * Oklahoma's 6th congressional district. Jed Johnson Jr. (D)

Oregon

 * Oregon's 1st congressional district. Wendell Wyatt (R)
 * Oregon's 2nd congressional district. Al Ullman (D)
 * Oregon's 3rd congressional district. Edith Green (D)
 * Oregon's 4th congressional district. Robert B. Duncan (D)

Pennsylvania

 * Pennsylvania's 1st congressional district. William A. Barrett (D)
 * Pennsylvania's 2nd congressional district. Robert N. C. Nix Sr. (D)
 * Pennsylvania's 3rd congressional district. James A. Byrne (D)
 * Pennsylvania's 4th congressional district. Herman Toll (D)
 * Pennsylvania's 5th congressional district. William J. Green III (D)
 * Pennsylvania's 6th congressional district. George M. Rhodes (D)
 * Pennsylvania's 7th congressional district. George Watkins (R)
 * Pennsylvania's 8th congressional district. Willard S. Curtin (R)
 * Pennsylvania's 9th congressional district. Paul B. Dague (R), until December 30, 1966
 * Pennsylvania's 10th congressional district. Joseph M. McDade (R)
 * Pennsylvania's 11th congressional district. Dan Flood (D)
 * Pennsylvania's 12th congressional district. J. Irving Whalley (R)
 * Pennsylvania's 13th congressional district. Richard Schweiker (R)
 * Pennsylvania's 14th congressional district. William S. Moorhead (D)
 * Pennsylvania's 15th congressional district. Fred B. Rooney (D)
 * Pennsylvania's 16th congressional district. John C. Kunkel (R), until December 30, 1966
 * Pennsylvania's 17th congressional district. Herman T. Schneebeli (R)
 * Pennsylvania's 18th congressional district. Robert J. Corbett (R)
 * Pennsylvania's 19th congressional district. Nathaniel N. Craley Jr. (D)
 * Pennsylvania's 20th congressional district. Elmer J. Holland (D)
 * Pennsylvania's 21st congressional district. John Herman Dent (D)
 * Pennsylvania's 22nd congressional district. John P. Saylor (R)
 * Pennsylvania's 23rd congressional district. Albert W. Johnson (R)
 * Pennsylvania's 24th congressional district. Joseph P. Vigorito (D)
 * Pennsylvania's 25th congressional district. Frank M. Clark (D)
 * Pennsylvania's 26th congressional district. Thomas E. Morgan (D)
 * Pennsylvania's 27th congressional district. James G. Fulton (R)

Rhode Island

 * Rhode Island's 2nd congressional district. Fernand St Germain (D)
 * Rhode Island's 1st congressional district. John E. Fogarty (D)

South Carolina

 * South Carolina's 1st congressional district. L. Mendel Rivers (D)
 * South Carolina's 2nd congressional district. Albert Watson (D), until February 1, 1965
 * Albert Watson (R), from June 15, 1965
 * South Carolina's 3rd congressional district. William Jennings Bryan Dorn (D)
 * South Carolina's 4th congressional district. Robert T. Ashmore (D)
 * South Carolina's 5th congressional district. Thomas S. Gettys (D)
 * South Carolina's 6th congressional district. John L. McMillan (D)

South Dakota

 * South Dakota's 1st congressional district. Ben Reifel (R)
 * South Dakota's 2nd congressional district. Ellis Yarnal Berry (R)

Tennessee

 * Tennessee's 1st congressional district. Jimmy Quillen (R)
 * Tennessee's 2nd congressional district. John Duncan Sr. (R)
 * Tennessee's 3rd congressional district. Bill Brock (R)
 * Tennessee's 4th congressional district. Joe L. Evins (D)
 * Tennessee's 5th congressional district. Richard Fulton (D)
 * Tennessee's 6th congressional district. William Anderson (D)
 * Tennessee's 7th congressional district. Tom J. Murray (D), until December 30, 1966
 * Tennessee's 8th congressional district. Fats Everett (D)
 * Tennessee's 9th congressional district. George W. Grider (D)

Texas

 * Texas's 1st congressional district. Wright Patman (D)
 * Texas's 2nd congressional district. Jack Brooks (D)
 * Texas's 3rd congressional district. Lindley Beckworth (D)
 * Texas's 4th congressional district. Ray Roberts (D)
 * Texas's 5th congressional district. Earle Cabell (D)
 * Texas's 6th congressional district. Olin E. Teague (D)
 * Texas's 7th congressional district. John Dowdy (D)
 * Texas's 8th congressional district. Albert Thomas (D), until February 15, 1966
 * Lera Millard Thomas (D), from March 26, 1966
 * Texas's 9th congressional district. Clark W. Thompson (D), until December 30, 1966
 * Texas's 10th congressional district. J. J. Pickle (D)
 * Texas's 11th congressional district. William R. Poage (D)
 * Texas's 12th congressional district. Jim Wright (D)
 * Texas's 13th congressional district. Graham B. Purcell Jr. (D)
 * Texas's 14th congressional district. John Andrew Young (D)
 * Texas's 15th congressional district. Kika de la Garza (D)
 * Texas's 16th congressional district. Richard Crawford White (D)
 * Texas's 17th congressional district. Omar Burleson (D)
 * Texas's 18th congressional district. Walter E. Rogers (D)
 * Texas's 19th congressional district. George H. Mahon (D)
 * Texas's 20th congressional district. Henry B. González (D)
 * Texas's 21st congressional district. O. C. Fisher (D)
 * Texas's 22nd congressional district. Robert R. Casey (D)
 * At-large. Joe R. Pool (D)

Utah

 * Utah's 1st congressional district. Laurence J. Burton (R)
 * Utah's 2nd congressional district. David S. King (D)

Vermont

 * At-large. Robert Stafford (R)

Virginia

 * Virginia's 1st congressional district. Thomas N. Downing (D)
 * Virginia's 2nd congressional district. Porter Hardy Jr. (D)
 * Virginia's 3rd congressional district. David E. Satterfield III (D)
 * Virginia's 4th congressional district. Watkins Moorman Abbitt (D)
 * Virginia's 5th congressional district. William M. Tuck (D)
 * Virginia's 6th congressional district. Richard Harding Poff (R)
 * Virginia's 7th congressional district. John Otho Marsh Jr. (D)
 * Virginia's 8th congressional district. Howard W. Smith (D)
 * Virginia's 9th congressional district. W. Pat Jennings (D)
 * Virginia's 10th congressional district. Joel Broyhill (R)

Washington

 * Washington's 1st congressional district. Thomas Pelly (R)
 * Washington's 2nd congressional district. Lloyd Meeds (D)
 * Washington's 3rd congressional district. Julia Butler Hansen (D)
 * Washington's 4th congressional district. Catherine Dean May (R)
 * Washington's 5th congressional district. Tom Foley (D)
 * Washington's 6th congressional district. Floyd Hicks (D)
 * Washington's 7th congressional district. Brock Adams (D)

West Virginia

 * West Virginia's 1st congressional district. Arch A. Moore Jr. (R)
 * West Virginia's 2nd congressional district. Harley Orrin Staggers (D)
 * West Virginia's 3rd congressional district. John M. Slack Jr. (D)
 * West Virginia's 4th congressional district. Ken Hechler (D)
 * West Virginia's 5th congressional district. James Kee (D)

Wisconsin

 * Wisconsin's 1st congressional district. Lynn E. Stalbaum (D)
 * Wisconsin's 2nd congressional district. Robert Kastenmeier (D)
 * Wisconsin's 3rd congressional district. Vernon Wallace Thomson (R)
 * Wisconsin's 4th congressional district. Clement J. Zablocki (D)
 * Wisconsin's 5th congressional district. Henry S. Reuss (D)
 * Wisconsin's 6th congressional district. John Abner Race (D)
 * Wisconsin's 7th congressional district. Melvin Laird (R)
 * Wisconsin's 8th congressional district. John W. Byrnes (R)
 * Wisconsin's 9th congressional district. Glenn Robert Davis (R)
 * Wisconsin's 10th congressional district. Alvin O'Konski (R)

Wyoming

 * At-large. Teno Roncalio (D)

Non-voting member

 * Puerto Rico's at-large congressional district. Santiago Polanco-Abreu (Resident Commissioner) (PPD)



Senate

 * Replacements: 5
 * Democratic: 1-seat net loss
 * Republican: 1-seat net gain
 * Deaths: 2
 * Resignations: 2


 * South Carolina (3)
 * | Olin D. Johnston (D)
 * Died April 18, 1965. Successor appointed April 22, 1965 to continue the term.
 * | Donald S. Russell (D)
 * April 22, 1965
 * April 22, 1965


 * Virginia (1)
 * | Harry F. Byrd (D)
 * Resigned November 10, 1965. Successor appointed November 12, 1965 to continue his father's term.
 * | Harry F. Byrd Jr. (D)
 * November 12, 1965
 * November 12, 1965


 * Michigan (2)
 * | Patrick V. McNamara (D)
 * Died April 30, 1966. Successor appointed May 11, 1966 to finish the term.
 * | Robert P. Griffin (R)
 * May 11, 1966
 * May 11, 1966


 * South Carolina (3)
 * | Donald S. Russell (D)
 * Interim appointee lost nomination to finish the term. Successor elected November 8, 1966.
 * | Fritz Hollings (D)
 * November 9, 1966
 * November 9, 1966


 * Virginia (2)
 * | Absalom Willis Robertson (D)
 * Resigned December 30, 1966, having lost renomination. Successor appointed to finish the term, having already been elected to the next term.
 * | William B. Spong Jr. (D)
 * December 31, 1966
 * December 31, 1966


 * Tennessee (2)
 * | Ross Bass (D)
 * Resigned January 2, 1967, having lost renomination. Seat remained vacant until the end of the term (the next day).
 * Vacant
 * Not filled this term
 * Not filled this term


 * }

House of Representatives

 * Replacements: 9
 * Democratic: no net change
 * Republican: no net change
 * Deaths: 5
 * Resignations: 15
 * Total seats with changes: 20


 * South Carolina's 2nd congressional district
 * nowrap| Albert Watson (D)
 * style="font-size:80%" | Resigned February 1, 1965, after being stripped of seniority by the House Democratic Caucus for supporting Republican Presidential candidate Barry Goldwater. Was re-elected as a Republican in a special election to replace himself.
 * nowrap | Albert Watson (R)
 * June 15, 1965
 * Louisiana's 7th congressional district
 * nowrap| T. Ashton Thompson (D)
 * style="font-size:80%" | Died July 1, 1965
 * nowrap | Edwin Edwards (D)
 * October 2, 1965
 * Ohio's 7th congressional district
 * nowrap| Clarence J. Brown (R)
 * style="font-size:80%" | Died August 23, 1965
 * nowrap | Bud Brown (R)
 * November 2, 1965
 * California's 26th congressional district
 * nowrap| James Roosevelt (D)
 * style="font-size:80%" | Resigned September 30, 1965, to become the US Representative to the United Nations Economic and Social Council
 * nowrap | Thomas M. Rees (D)
 * December 15, 1965
 * North Carolina's 1st congressional district
 * nowrap| Herbert Covington Bonner (D)
 * style="font-size:80%" | Died November 7, 1965
 * nowrap | Walter B. Jones Sr. (D)
 * February 5, 1966
 * New York's 17th congressional district
 * nowrap| John Lindsay (R)
 * style="font-size:80%" | Resigned December 31, 1965, after being elected Mayor of New York City
 * nowrap | Theodore R. Kupferman (R)
 * February 8, 1966
 * Arkansas's 4th congressional district
 * nowrap| Oren Harris (D)
 * style="font-size:80%" | Resigned February 3, 1966, to become judge of the US Court of the Eastern and Western Districts of Arkansas
 * nowrap | David Pryor (D)
 * November 8, 1966
 * Texas's 8th congressional district
 * nowrap| Albert Thomas (D)
 * style="font-size:80%" | Died February 15, 1966
 * nowrap | Lera Millard Thomas (D)
 * March 26, 1966
 * California's 14th congressional district
 * nowrap| John F. Baldwin Jr. (R)
 * style="font-size:80%" | Died March 9, 1966
 * nowrap | Jerome Waldie (D)
 * June 7, 1966
 * Michigan's 9th congressional district
 * nowrap| Robert P. Griffin (R)
 * style="font-size:80%" | Resigned May 10, 1966, after being appointed to the U.S. Senate
 * nowrap | Guy Vander Jagt (R)
 * November 8, 1966
 * Alaska's at-large congressional district
 * nowrap| Ralph Julian Rivers (D)
 * style="font-size:80%" | Resigned December 30, 1966
 * rowspan=10 |Vacant
 * rowspan=10 |Not filled this term
 * Indiana's 8th congressional district
 * nowrap| Winfield K. Denton (D)
 * style="font-size:80%" | Resigned December 30, 1966
 * Indiana's 10th congressional district
 * nowrap| Ralph Harvey (R)
 * style="font-size:80%" | Resigned December 30, 1966
 * New York's 29th congressional district
 * nowrap| Leo W. O'Brien (D)
 * style="font-size:80%" | Resigned December 30, 1966
 * North Carolina's 4th congressional district
 * nowrap| Harold D. Cooley (D)
 * style="font-size:80%" | Resigned December 30, 1966
 * Ohio's 15th congressional district
 * nowrap| Robert T. Secrest (D)
 * style="font-size:80%" | Resigned December 30, 1966
 * Pennsylvania's 9th congressional district
 * nowrap| Paul B. Dague (R)
 * style="font-size:80%" | Resigned December 30, 1966
 * Pennsylvania's 16th congressional district
 * nowrap| John C. Kunkel (R)
 * style="font-size:80%" | Resigned December 30, 1966
 * Tennessee's 7th congressional district
 * nowrap| Tom J. Murray (D)
 * style="font-size:80%" | Resigned December 30, 1966
 * Texas's 9th congressional district
 * nowrap| Clark W. Thompson (D)
 * style="font-size:80%" | Resigned December 30, 1966
 * }
 * Ohio's 15th congressional district
 * nowrap| Robert T. Secrest (D)
 * style="font-size:80%" | Resigned December 30, 1966
 * Pennsylvania's 9th congressional district
 * nowrap| Paul B. Dague (R)
 * style="font-size:80%" | Resigned December 30, 1966
 * Pennsylvania's 16th congressional district
 * nowrap| John C. Kunkel (R)
 * style="font-size:80%" | Resigned December 30, 1966
 * Tennessee's 7th congressional district
 * nowrap| Tom J. Murray (D)
 * style="font-size:80%" | Resigned December 30, 1966
 * Texas's 9th congressional district
 * nowrap| Clark W. Thompson (D)
 * style="font-size:80%" | Resigned December 30, 1966
 * }
 * Texas's 9th congressional district
 * nowrap| Clark W. Thompson (D)
 * style="font-size:80%" | Resigned December 30, 1966
 * }

Senate

 * Aeronautical and Space Sciences (Chairman: Clinton P. Anderson; Ranking Member: Margaret Chase Smith)
 * Agriculture and Forestry (Chairman: Allen J. Ellender; Ranking Member: George D. Aiken)
 * Appropriations (Chairman: Carl Hayden; Ranking Member: Leverett Saltonstall)
 * Armed Services (Chairman: Richard B. Russell; Ranking Member: Leverett Saltonstall)
 * Banking and Currency (Chairman: A. Willis Robertson; Ranking Member: Wallace F. Bennett)
 * Commerce (Chairman: Warren G. Magnuson; Ranking Member: Norris Cotton)
 * District of Columbia (Chairman: Alan Bible; Ranking Member: Winston L. Prouty)
 * Finance (Chairman: Russell B. Long; Ranking Member: John J. Williams)
 * Foreign Relations (Chairman: J. William Fulbright; Ranking Member: Bourke B. Hickenlooper)
 * Government Operations (Chairman: John Little McClellan; Ranking Member: Karl E. Mundt)
 * Interior and Insular Affairs (Chairman: Henry M. Jackson; Ranking Member: Thomas H. Kuchel)
 * Judiciary (Chairman: James O. Eastland; Ranking Member: Everett Dirksen)
 * Labor and Public Welfare (Chairman: J. Lister Hill; Ranking Member: Jacob K. Javits)
 * Organization of Congress (Select) (Chairman: )
 * Post Office and Civil Service (Chairman: A.S. Mike Monroney; Ranking Member: Frank Carlson)
 * Public Works (Chairman: Pat McNamara; Ranking Member: John Sherman Cooper)
 * Rules and Administration (Chairman: B. Everett Jordan; Ranking Member: Carl T. Curtis)
 * Small Business (Select) (Chairman: John J. Sparkman)
 * Standards and Conduct (Select) (Chairman: ; Ranking Member: )
 * Whole

House of Representatives

 * Agriculture (Chairman: Harold D. Cooley; Ranking Member: Paul B. Dague)
 * Appropriations (Chairman: George H. Mahon; Ranking Member: Frank T. Bow)
 * Armed Services (Chairman: L. Mendel Rivers; Ranking Member: William H. Bates)
 * Banking and Currency (Chairman: Wright Patman; Ranking Member: William B. Widnall)
 * District of Columbia (Chairman: John L. McMillan; Ranking Member: Ancher Nelsen)
 * Education and Labor (Chairman: Adam Clayton Powell; Ranking Member: William H. Ayres)
 * Foreign Affairs (Chairman: Thomas E. Morgan; Ranking Member: Frances P. Bolton)
 * Government Operations (Chairman: William L. Dawson; Ranking Member: Clarence J. Brown)
 * House Administration (Chairman: Omar Burleson; Ranking Member: Glenard P. Lipscomb)
 * Interior and Insular Affairs (Chairman: Wayne N. Aspinall; Ranking Member: John P. Saylor)
 * Interstate and Foreign Commerce (Chairman: Oren Harris; Ranking Member: William L. Springer)
 * Judiciary (Chairman: Emanuel Celler; Ranking Member: William M. McCulloch)
 * Merchant Marine and Fisheries (Chairman: Edward A. Garmatz; Ranking Member: William S. Mailliard)
 * Post Office and Civil Service (Chairman: Tom J. Murray; Ranking Member: Robert J. Corbett)
 * Public Works (Chairman: George Hyde Fallon; Ranking Member: William C. Cramer)
 * Rules (Chairman: Howard W. Smith; Ranking Member: Clarence J. Brown)
 * Science and Astronautics (Chairman: George Paul Miller; Ranking Member: Joseph W. Martin Jr.)
 * Small Business (Select) (Chairman: Joe L. Evins)
 * Standards of Official Conduct (Chairman: )
 * Un-American Activities (Chairman: Edwin E. Willis; Ranking Member: John M. Ashbrook)
 * Veterans' Affairs (Chairman: Olin E. Teague; Ranking Member: E. Ross Adair)
 * Ways and Means (Chairman: Wilbur D. Mills; Ranking Member: John W. Byrnes)
 * Whole

Joint committees

 * Atomic Energy (Chairman: Rep. Chet Holifield; Vice Chairman: Sen. John O. Pastore)
 * Conditions of Indian Tribes (Special)
 * Construction of a Building for a Museum of History and Technology for the Smithsonian
 * Defense Production (Chairman: Sen. A. Willis Robertson; Vice Chairman: Rep. Wright Patman)
 * Disposition of Executive Papers
 * Economic (Chairman: Rep. Wright Patman; Vice Chairman: Sen. Paul H. Douglas)
 * Immigration and Nationality Policy (Chairman: Rep. Michael A. Feighan)
 * Legislative Budget
 * The Library (Chairman: Rep. Omar Burleson; Vice Chairman: Sen. B. Everett Jordan)
 * Navajo-Hopi Indian Administration
 * Organization of Congress
 * Printing (Chairman: Sen. Carl Hayden; Vice Chairman: Rep. Omar Burleson)
 * Reduction of Nonessential Federal Expenditures (Chairman: Vacant; Vice Chairman: Vacant)
 * Taxation (Chairman: Rep. Wilbur D. Mills; Vice Chairman: Sen. Harry F. Byrd)

Legislative branch agency directors

 * Architect of the Capitol: J. George Stewart
 * Attending Physician of the United States Congress: George Calver, until 1966
 * Rufus Pearson, from 1966
 * Comptroller General of the United States: Joseph Campbell, until July 31, 1965, vacant thereafter
 * vacant, July 31, 1965 – March 8, 1966
 * Elmer B. Staats, from March 8, 1966
 * Librarian of Congress: Lawrence Quincy Mumford
 * Public Printer of the United States: James L. Harrison

Senate

 * Chaplain: Frederick Brown Harris (Methodist)
 * Parliamentarian: Floyd Riddick
 * Secretary: Felton McLellan Johnston, until December 30, 1965
 * Emery L. Frazier, January 1, 1966 – September 30, 1966
 * Francis R. Valeo, from October 1, 1966
 * Librarian: Richard D. Hupman
 * Democratic Party Secretary: Francis R. Valeo, until 1966
 * J. Stanley Kimmitt, from 1966
 * Republican Party Secretary: J. Mark Trice
 * Sergeant at Arms: Joseph C. Duke, until December 30, 1965
 * Robert G. Dunphy, from January 14, 1966

House of Representatives

 * Chaplain: Bernard Braskamp (Presbyterian)
 * Clerk: Ralph R. Roberts
 * Doorkeeper: William M. Miller
 * Postmaster: H. H. Morris
 * Parliamentarian: Lewis Deschler
 * Reading Clerks: Charles W. Hackney Jr. (D) and Joe Bartlett (R)
 * Sergeant at Arms: Zeake W. Johnson