It is widely reputed and partially corroborated by the Church Committee Hearings, that during the Kennedy administration, the Central Intelligence Agency (CIA) recruited Giancana and other mobsters to assassinate Cuban dictator Fidel Castro.
Jimmy Hoffa, president of the Teamsters Union and mobsters Carlos Marcello, Sam Giancana, Johnny Roselli, Charles Nicoletti, and Santo Trafficante Jr.-all of whom say Hoffa worked with CIA on the Castro assassination plots-top the House Select Committee list of Assassinations Mafia suspects [REF].