"Yes, the incident of Jimmy Carter crying after being briefed about classified information regarding UFO’s is largely believed to be true by the serious researchers on the subject. As a forewarning, the following information is very unsettling and will explain why Carter never “kept his promise” of revealing classified UFO information to the public.
According to the story that was corroborated by more than one witness, U.S. presidents are only given a cursory overview of the subject. Apparently, the CIA runs the program, only provide information to the President on a need to know basis, and do not consider presidential curiosity as sufficient need to know. This was implemented after Kennedy, and all presidents after him have been given only summary briefings (some presidents for unknown reasons were given more than others).
Okay on to your question. President Carter is a deeply religious man who had also witnessed a UFO with 6 other people. Everyone thought that he would be the one to finally release UFO info to the public but as the story goes, he was repeatedly stonewalled. Eventually, the CIA had “the talk” with him, and afterward it was reported that he sunk his head in his hands and not only began to deeply sob, but was visibly disturbed for some weeks afterward.
What was he told and shown?
He was told that the major religions including Christianity were programs created by extraterrestrials to prevent us from destroying ourselves while they ran their experiments on us – and that they made us. At this moment it became clear to Carter that such information could cause tremendous economic and social upheaval. I should add that I am not only a Christian but a clergyman, so I am in no way attempting to promote atheism here. In fact, how God fits into this might be an interesting separate post. Nevertheless, these are the facts as I know them to be".
- Ed Harris Former Research Associate at NASA Ames Research Center
Author and world’s leading UFO researcher Richard Dolan also writes about this incident in his book “UFOs and the National Security State: The Cover-Up Exposed.” According to his book, there are claims that President Carter was given a UFO briefing at the White House on June 14, 1977, which he was then bound to secrecy about.