There's That, Yeah.

JFK assassination conspiracy theorists wonder why the CIA won't release documents related to its covert support for a group of anti-Castro Cubans who clashed with Lee Harvey Oswald before President Kennedy's November 1963 murder. A leading expert on the assassination states the bleeding obvious:

[Gerald] Posner, the anti-conspiracy author, said that if there really were something explosive involving the C.I.A. and President Kennedy, it would not be in the files — not even in the documents the C.I.A. has fought to keep secret.

“Most conspiracy theorists don’t understand this,” Mr. Posner said. “But if there really were a C.I.A. plot, no documents would exist.”