Well, you know that he was deeply involved with the CIA, even at that time, eventually rising to be the Director, and the CIA were the ones that were abandoned by JFK at The Bay of Pigs, so the conspiracy kinda writes itself.
So I suppose my original point may stand.
Even with the release of new info, we may never know everything.
Oh, BS. Bush was a congressman from Houston in 1967 when I moved there. His time with the CIA began in the 70s.