FOR ME, the biggest hole in most conspiracy theories is people; a lot of people involved, from puppetmasters to pawns, and NOBODY ever spilled the beans? You LEOs here, how many crimes were busted wide open by a criminal boasting about how they got away with it? And theoretically, the Kennedy assassination was/would be a HUGE political coup for the perpetrators...nobody ever gloated.
A man who said he was a Federal informant has said that he spent a good deal of time talking to Carlos Marcello in prison, and that Marcello said he did it. Said that Oswald was his man. Marcello had been extradited to Columbia and was back in the country illegally. How to find him was among the Attorney General's meeting agendae on the morning of November 22, 1963.
Oswald is seen as a young man in early photos with his CAP unit. The leader, also shown in the photos, was Marcello's pilot, who had flown him in and out of Columbia.
It was widely reported on radio and local TV and in several papers at the time that a plot to try to assassinate JFK in Chicago (Gilorma (Sam) Giancana's territory) in early November had been uncovered, and later that day, that the cancellation of JFK's trip to Chicago (Pierre Salinger: "The President has a cold") was due to the information about an assassination plot. I was there. Everyone was talking about it.
There are reports
from the time that the would-be assassins, who got away, were Cuban nationals from New Orleans (Giancana's territory). The plot was foiled by the discovery of a map of the motorcade and a warehouse (sound familiar?) that was discovered by a hotel maid. The Secret Service agent in charge in Chicago said that the Werren Commission did not receive the information.
There have been reports of a plot in Tampa (JFK went anyway). That's Santos Trafficante's territory.
In the miniseries The Kennedys, brothers John and Robert discuss wire taps of conversations among Giancana, Marcello, and Trafficante, in which the Dons express outrage of the Administration's war on organized crime. The substance of the brothers' conversation was what to do about Frank Sinatra and Joseph P. Kennedy's discussions with Giancana before the 1960 election.
The Warren Commission report contains a bio of Oswald. There is no mention of any involvment with the Civil Air Patrol.
The Report discusses various kinds of conspiracy plots, in particular those that might have involved foreign governments or US agencies or Jack Ruby, and states that they found no credible evidence of same. There is no mention of plots involving organized crime.
The Report mentions other assassination plots, including that involving Maj Gen Edwin Walker, along with numerous rumors and much speculation. There is no mention of the Chicago motorcade cancellation.
One can conclude what one will, but to me, there were those with the motive, the means, and the opportunity, and Oswald was one of the means.
The Marcello interview tapes reportedly remain sealed. Why, I do not know.
One thing that we do know from tape recordings, which I have heard, is LBJ's insistence immediately after Oswald's death that the investigation be stopped quickly.
More people are familiar with recording of the President ordering some slacks.