National Film Preservation Act: In 1988, as classic films like High Noon and Casablanca were being colorized and other early films were being "time-compressed" by television broadcasters to allow the insertion of more commercials, Mrazek introduced a proposal to protect classic American films from significant alteration without the permission of the films' creators. While the proposal was being considered, the "Mrazek Amendment" generated an intense lobbying campaign against its passage, led on behalf of the major film studios by Jack Valenti, President of the Motion Picture Association. At one point, Valenti said the proposal "...puts a spike in the eye of normal House procedure and creates a group which is something out of 1984." The legislation was backed by many members of Hollywood's creative community, including actors Burt Lancaster and James Stewart, directors Steven Spielberg and George Lucas, all of whom wanted to see the integrity of their work preserved without alteration. Ultimately the "moral rights" of the Mrazek amendment prevailed in Congress; its final provisions included the establishment of the National Film Registry, in which 25 films per year deemed "culturally, historically, or aesthetically significant" are protected by the Library of Congress. The law also set up the National Film Preservation Board to explore new approaches to saving endangered work. It was signed into law by President Reagan on September 27, 1988.