Overview
The document is short and its wording is the entire case. On 29 November 1963, a week after the assassination, the FBI director circulated a memorandum to the State Department's Bureau of Intelligence and Research reporting that the Bureau had briefed certain officials on how anti-Castro Cuban exiles in Miami were reacting to the killing of the president. One of the people briefed, on 23 November, is identified as Mr. George Bush of the Central Intelligence Agency.
In 1963 George Herbert Walker Bush was a Texas oilman running an offshore drilling company and beginning a political career. He did not become director of the CIA until 1976. He has always said he had no connection to the agency before that.
How It Surfaced
Joseph McBride, a journalist and film historian, located the memorandum and published an article about it in The Nation on 16 July 1988 — in the middle of the campaign that would make Bush president.
The timing shaped everything that followed. A document appearing to place a presidential candidate inside the CIA a decade before he ran it, released during his campaign, was never going to be assessed calmly by anyone.
The CIA's response was that the memo referred to a different George Bush. A search identified George William Bush, who had worked at the agency in 1963 in a junior analytical role. In September 1988 he swore an affidavit stating that he had not received such a briefing and was not the person named in the memorandum.
That affidavit is the pivot of the whole affair, and it cuts in an unexpected direction: the man produced as the innocent explanation declined to accept the role.
What Else Is In the File
Two further items keep the question alive.
The first is that on the day of the assassination, a man named George H. W. Bush telephoned the FBI's Houston office from Tyler, Texas, to pass on a report that a named individual had spoken about killing the president. The call was logged. The lead went nowhere. It establishes that Bush was in Texas that day, and that he was sufficiently connected to be phoning the Bureau with a tip.
The second is Bush's own inability, in later years, to say where he had been on 22 November 1963 — a question most Americans of that generation could answer immediately. He said at various points that he could not recall.
Beyond the documents there is a photograph, widely circulated, of a tall man standing outside the Texas School Book Depository, which supporters of the theory identify as Bush and which has never been authenticated as such.
The Case Against
The ordinary reading is that the memorandum is exactly what the agency said and that George William Bush's affidavit reflects a man with no memory of a routine briefing twenty-five years later, or one delivered to a colleague and attributed to him in the paperwork.
The wider claim also has to account for the CIA's structure. Zapata Offshore, Bush's company, operated in the Caribbean during the period of maximum agency activity against Cuba, and businessmen in that position were commonly approached for information and occasional assistance without being officers of anything. The distinction between an asset, a contact and an employee is one the documentary record of the period handles inconsistently, and "of the Central Intelligence Agency" in an FBI memo is not necessarily a personnel classification.
Against that, the coincidence is genuinely awkward: a man with the same name and the same initials as a future CIA director, briefed on the reaction of Cuban exiles to the assassination, in a document written by Hoover a week after the event.
Where It Sits
No evidence has ever placed Bush at Dealey Plaza, and no document connects him to the assassination itself. The memorandum shows a briefing, not a plot, and even on the least charitable reading it would establish an intelligence relationship rather than participation in a killing.
What sustains the file is the shape of the denial. A document exists; the explanation offered was a second man; the second man denied it under oath; and the principal could not recall his own whereabouts on the most memorable afternoon of the decade. None of that amounts to a conspiracy. It is, however, an unusually resistant set of loose ends for a claim that has been answered as many times as this one has.