In 1991, Stone showed JFK to Congress on Capitol Hill, which helped lead to passage of the Assassination Materials Disclosure Act of 1992. The Assassination Records Review Board (created by Congress to lessen, but not end the secrecy surrounding Kennedy's assassination) discussed the film, including Stone's observation at the end of the film, about the dangers inherent in government secrecy. Stone published an annotated version of the screenplay, in which he cites references for his claims, shortly after the film's release. He stated "I make my films like you're going to die if you miss the next minute. You better not go get popcorn." Stone's satire of the modern media, Natural Born Killers was released in 1994. Originally based on a screenplay by Quentin Tarantino, but significantly rewritten by Stone, Richard Rutowski, and David Veloz, critics recognized its portrayal of violence and the intended satire on the media. Before it was released, the MPAA gave the film a NC-17 rating; this caused Stone to cut four minutes of film footage in order to obtain an R rating (he eventually released the unrated version on VHS and DVD in 2001). The film was the recipient of the Grand Special Jury Prize at the Venice Film Festival that year. In the same year he appear in a cameo as himself in the presidential comedy Dave. Stone went on to direct the 1995 Richard Nixon biopic Nixon, which received multiple Oscar nominations for script, John Williams' score, Joan Allen as Pat Nixon and Anthony Hopkins' portrait of the title role. Stone followed Nixon with the 1997 road movie/film noir, U Turn, and 1999's Any Given Sunday, a film about power struggles within and without an American football team. 2000s After a period from 1986 to 1999, where he released a new film at least every 1–2 years, Stone slowed down in the 2000s, though still finding some success. In 2004, Stone directed Alexander. He later re-edited his biographical film of Alexander the Great into a two-part, 3-hour 37-minute film Alexander Revisited: The Final Cut, which became one of the highest-selling catalog items from Warner Bros. He further refined the film and in 2014 released the two-part, 3-hour 26-minute Alexander: The Ultimate Cut. After Alexander, Stone went on to direct World Trade Center, based on the true story of two PAPD policemen who were trapped in the rubble and survived the September 11 attacks.