The videotape at the end sounds different when played back than the actual conversation that took place.
When congressman Johnson first sits down with Celia Kirby and her assistant Ira Schecter , Johnson asks Ira about how much he pays for auto insurance and Ira states that he owns a 1982 Dodge Dart. The Dodge Dart was manufactured from 1960 through 1976 and then again from 2013 through the present. There is no such thing as a 1982 Dodge Dart.
When cancer victim Mickey Juber is first seen, she is bald because of the surgery & cancer treatment. The next time she is seen is a few weeks later at the Congressional hearings, and she's grown almost a full head of hair! There is no way hair can grow that fast.
Despite the threats to have Jefferson removed from congress, there is nothing in the Constitution or in house or senate rules that states a person with a criminal history cannot serve their term if elected. However these are only threats, the film does not mention the characters intend to move forward with investigations and hearings.
When the Congressmen are out in the field hunting, they spot a flock of geese and commence firing. However, even though we hear the sound of multiple rapid gunfire, none of the weapons (M16s) have any fire spitting from the barrels, nor do any spent cartridges eject.
The window behind Hattie Rifkin's desk shows a California Fan Palm outside. California Fan Palms are not commonly found in Florida, and certainly not that tall.