The Wolf Amendment, a law that prevents bilateral cooperation in space research between the U.S. and China, is preventing U.S. government-funded analysis of the Chang'e 5 moon samples.

China is sharing priceless moon samples with international partners, but NASA can't be a part of it

Source: space
Source Link: https://www.space.com/astronomy/moon/china-is-sharing-priceless-moon-samples-with-international-partners-but-nasa-cant-be-a-part-of-it