American filmmaker Oliver Stone said Tuesday that the assassination of former President John F. Kennedy is “a cold case with a lot of clues” after he testified before Congress earlier in the day.

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.

American filmmaker Oliver Stone testified Tuesday before a House committee on the release of new documents related to the assassination of John F. Kennedy Jr. NewsNation’s Ross Coulthart agrees with Stone’s claims that it was a clear motive behind Kennedy’s death and discusses the possibility of a “cover-up” for the planner of the shooting.

Oscar-winning director Oliver Stone testified before a congressional task force on the assassination of President John F. Kennedy. Stone directed the 1991 film "JFK."

A House task force on declassifying secrets is holding a hearing on the JFK files on Tuesday afternoon. Task Force on the Declassification of Federal Secrets chair Rep. Anna Paulina Luna, R-Fla., announced the hearing but did not provide any information on witnesses or what questions may be addressed.