Director Oliver Stone, whose 1991 film "JFK" portrayed President John F. Kennedy's assassination as the work of a shadowy government conspiracy, called for the investigation into his assassination to be reopened during a House hearing on Tuesday. He said a new investigation "outside all political considerations" should begin "at the scene of the crime" and reexamine all of the evidence from the day of the assassination. Scholars and historians have concluded that there's strong evidence that Lee