So what did the witnesses tell lawmakers? Testimony from Stone and authors Jefferson Morley and James DiEugenio largely centered around criticism of the CIA and other federal officials in the decades since Kennedy's assassination.

Oliver Stone's "JFK" was nominated for eight Oscars and grossed more than $200 million but was also dogged by questions about its historical accuracy.

Oscar-winning director Oliver Stone has called on Congress to reinvestigate the 1963 assassination of President John F.