There is a brief homosexual flirtation between J. Edgar Hoover and a young male waiter that consists of both of them biting opposite ends of a cracker simultaneously. The scene is played for comic relief. Later in the film, Hoover is described as a "fairy."
Nixon states that Dwight Eisenhower, JFK, and Martin Luther King, Jr. had mistresses.
Nixon says that the Kennedys "screw everything that moves."
(In a deleted scene, a man remarks on the size of a woman's "t*ts.")