I respect your time here on FR but those are just silly accusations which you cannot possibly know.
I have done extensive research of my own on this subject over the past 25 years. The CIA Operation Mongoose team originally designed to target Castro flipped directions and became instrumental in the assassination of JFK. Bush was their chief support coordinator, through his CIA-provided Zapata Oil operations in the Caribbean.
The best book on this particular subject is Mark Lane's "Plausible Denial" which deals with the libel trial of E Howard Hunt versus Spotlight magazine in 1985. This is only the second trial involving the JFK assassination and took place in Miami, Florida. It received virtually NO publicity at the time. I am sorry to inform you, but the truth is not silly but rather sad. Time and modern technology has exposed the ugly truth of George Bush being a central figure in the assassination of John F. Kennedy.