It also would benefit the article, if there was clarification of the timeframe that Charlie Wilson is investigated by Rudy Giuliani. It seems unlikely that Giuliani in his capacity as US District Attorney for the Southern District of New York (which is New York City) would have any interest, reach, authority or ability to investigate a US Congressman located in Washington DC and Texas. However, he was a Justice Department official in DC and led a drug investigation prior to this so maybe that is where his focal point of interest may have occurred. But for accuracy's sake that may be available in the book this movie is based on and less clear in the film.