But a Johnson Space Center source who asked not to be identified said there's a sufficient amount of lunar material on which scientific analysis has been completed to satisfy the requirement the transfer would not compromise such studies.

CNN: House approves moon rock giveaway to Apollo survivors

Going forward do you think that's going to continue to be sufficient, or do you think verification is going to remain a source of friction between the U.S. and China?

WHITEHOUSE: President Obama at Copenhagen Climate Change Conference

"Even if some of his statements are misleading by their negative implication that Mr. Bakaly was not a source of information that he in fact supplied or confirmed, such a finding does not provide a sufficient basis for a criminal contempt conviction for making false statements, " Johnson wrote in a 50-page ruling.

CNN: Former Starr spokesman cleared of contempt charges