How Does Censorship Affect Authorship?

Living in Westwood this summer, I had the chance to go to a few of the films screened during the LA film festival. One of them was, “This Film is Not Yet Rated”, a film about the movie rating system. (The film is in theaters now, go check it out if you’re interested). The intention of the director, Kirby Dick, is to expose the giant grasp the MPAA has on the film industry and the gross biases with which the MPAA operates. Relating to authorship, however, I think the film implicitly brings up some good issues – primarily, what is the interplay between censorship and authorship? If an author is not given total creative license to produce whatever he or she wants, does this affect his or her authorship? Have they authored the product in a less natural and direct way because of the interference of the censorship group (in this case the MPAA)? And for that matter, would the MPAA be considered a co-author in some way because they took part (or rather forced) some of the decisions that resulted in the finished film?