Citizen Cohn is a 1992 cable film covering the life of Joseph McCarthys controversial chief counsel Roy Cohn. James Woods, who starred as Cohn, was nominated for both an Emmy and a Golden Globe for his performance. Citizen Cohn also stars Joe Don Baker as McCarthy, Ed Flanders as Cohns courtroom nemesis Joseph Welch, Frederic Forrest as writer Dashiell Hammett, and Pat Hingle as Cohns onetime mentor J. Edgar Hoover. It was directed by Frank Pierson. The movie was filmed on location in Pittsburgh, Pennsylvania.
Source: Wikipedia