Corrected entry: Roughly halfway through the movie, when Jefferson Smith goes to see Senator Joseph Paine. When he is opening the door to enter Paine's office, he pulls it open. The next shot shows him entering the room, by pushing the door open, not pulling it.
Mr. Smith Goes to Washington (1939)
1 corrected entry
Directed by: Frank Capra
Starring: James Stewart, Claude Rains, Jean Arthur, Edward Arnold
Genres: Drama
Factual error: The filibuster scene gives the impression that the Senators were powerless to stop Jefferson Smith's speech. However, they can make a speaker shut up if at least 3/5 of the Senators vote to. From the Senators' reactions, a lot of them probably would have voted to silence Smith. (Clearly, if this had happened, the movie would be much less interesting).
Clarissa Saunders: I'm still asking myself, what is he? Animal, vegetable or mineral?
Diz Moore: Maybe he's an oyster.
Trivia: The same actress that plays Jimmy Stewart's mother in Mr. Smith goes to Washington also plays his mother in It's a Wonderful Life. Frank Capra, the director of both movies, liked using the same actors and actresses if he liked their work.
Correction: There appears to be a short hallway connecting the outer office to Senator Paine's office with the doors on either end. You can see this in Jefferson Smith's own office when Saunders hurries him inside to avoid the crowd after he introduces his bill.