During the fight on the balcony the bloodstain on the bad guy's robe switches from his left to his right shoulder.
When Agent X shoots the bad guy in the robe in the hotel room, he shoots him in the left shoulder. During the fight, the blood is on the right shoulder.
In the fight scene at the "Berlin" hotel when the two guys fighting go onto the outside balcony, the shot is reversed, this noticeable by the name tag and bullet wound switching sides. I assume this is make the traffic appear on the opposite side of the road as it would be in Berlin, as the scene was not filmed in Berlin.
The Russian wearing a bath robe gets shot in the left shoulder. Later he's in a rooftop fight and bleeding from his right upper torso.
Vice President Lyndon Johnson could not hold the record for finding the secret lock in the fireplace of the VP's mansion. Before 1977 when VP Walter Mondale moved in, the mansion on the grounds of the Naval Observatory, had been the home of the Chief of Naval Operations. Built in 1893, it was originally the home of the Superintendent of the Naval Observatory.
Agent X mentions three connected international incidents, the third one being "the suicide of the Argentinian Prime Minister". Argentina has a presidential system, thus it has a President, not a Prime Minister.
When the VP visits the Chief Justice at his home, as she sits down and addresses him by name, she says "Judge" instead of the correct "Chief Justice."
In the first scene in the hotel, John shoots a man in a robe walking down the stairs on the left side of his body. Later when they are fighting outside the wound is now on the right side of his body.
John's button cam works no matter what he is wearing.
(at around 31 mins) Millar finds a news story entitled 'New Soviet Embassy to Open this Year', it should say 'Russian Embassy' as the Soviet Union was dissolved in 1991.
Audio of toilet flushing, man comes out of port-a-potty.
At the hotel in the beginning the bald man in the robe is clearly shot in his left shoulder. The blood can still be seen on his left but as the fight transitions to the balcony the blood is now on his right side.
Vice President Maccabee improperly addresses Thorne as "Judge". Supreme Court Justices are always addressed as "Justice".