Wolf Amendment

The Wolf Amendment is a law passed by the United States Congress in 2011, named after then–United States Representative Frank Wolf, that prohibits the United States National Aeronautics and Space Administration (NASA) from using government funds to engage in direct, bilateral cooperation with the Chinese government and China-affiliated organizations from its activities without explicit authorization from the Federal Bureau of Investigation and the U.S. Congress. It has been inserted annually into appropriations bills since then.

History
In May 1999, the Report of the Select Committee on U.S. National Security and Military/Commercial Concerns with the People's Republic of China was made public. It alleged that technical information provided by American commercial satellite manufacturers to China in connection with satellite launches could have been used to improve Chinese intercontinental ballistic missile technology.

In 2010, Rep. John Culberson urged President Barack Obama not to allow further contact between NASA and the China National Space Administration (CNSA). In a letter addressed to the President, he wrote:

"I have grave concerns about the nature and goals of China’s space program and strongly oppose any cooperation between NASA and CNSA’s human space flight programs without Congressional authorization."

In April 2011, the 112th United States Congress barred NASA from engaging in bilateral agreements and coordination with China. As stated under Public Law 112–10, Sec. 1340:

Effects
In 2013, officials at NASA Ames prohibited Chinese nationals from attending Kepler Science Conference II. A number of American scientists boycotted the meeting, with senior academics either withdrawing individually or pulling out their entire research groups. Rep. Frank Wolf wrote a letter to NASA Administrator Charlie Bolden, saying that the restriction only applied to bilateral meetings and activities between NASA and the Chinese government or Chinese-owned companies, whereas Kepler Science Conference II is a multilateral event. NASA later reversed the ban and admitted a mistake in barring individual Chinese nationals who did not represent their government in official capacity.

During China's 2019 Chang'e 4 mission, NASA collaborated with China to monitor the moon lander and Yutu 2 rover on the lunar far-side using NASA's Lunar Reconnaissance Orbiter. NASA was able to do so by getting congressional approval for the specific interaction and sharing data with researchers globally. NASA stated:

With the return of the Chang’e-6 lunar mission on June 25, 2024, China acquired rocks and soil from the far side of the Moon, a historic milestone with the potential to revolutionize understanding of the Moon's evolution and its capacity to support human life. The China National Space Administration (CNSA) announced that it would share these lunar samples with scientists worldwide, following the precedent set by NASA after the Apollo missions. However according to an article from Futurism, US scientists will be largely barred from participating in the analysis of these samples because of the Wolf Amendment, unless NASA first receives certification from the FBI, proving that there are no national security threats. Currently NASA is consulting with legal experts to explore the possible avenues for collaboration with China to analyze the lunar samples, while adhering to the existing legal framework.

Criticism
Dean Cheng from The Heritage Foundation argued in April 2014 that more interaction with the Chinese is possible in the area of sharing already collected data, and that sharing data such as Geodesy information and lunar conditions may "help create a pattern of interaction that might lower some of the barriers to information exchange." . Sir Martin Rees, the fifteenth Astronomer Royal of Great Britain, has called the ban a "deplorable 'own goal' by the US".

The Chinese response to the exclusion policy involved its own space policy of opening up its space station to the outside world, welcoming scientists coming from all countries.

The quarterly-published international relations journal Harvard International Review pointed out that although supporters of the Wolf Amendment claim that the law reduces the risk of US-China war in space, it does in contrary prove the US' own intents and actually increase the risk of war in space.