Bush had nothing to do with the Warren Commission, wasn’t even in political office then. He did not go to Congress till about 1966.
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You must be right. After all the CIA denies that Bush was involved with them when Kennedy was shot.
https://www.cia.gov/readingroom/docs/CIA-RDP99-01448R000401580066-9.pdf
His long-term relationship with the CIA was why he was later appointed Director of the CIA.