Factual error: When the real president is shown in a coma in the White House basement, he is on a ventilator (a breathing machine). Ventilators require that the patient be intubated (a tube placed into their windpipe) and cannot work with an oxygen facemask which the president has. (01:02:40)
Suggested correction: However, ventilators work by controlling breathing rate and depth via an endotracheal tube (intubation) or a tight face mask. Confirmation and details of this are available on the National Heart, Lung, and Blood Institute website (an official website of the United States government).
Other mistake: When the real First Lady and the fake President emerge from the secret passageway leading to the fountain, there is an extremely bad process shot of the White House, which jumps visibly. (01:06:10)
Suggested correction: Unfortunately, "extremely bad process shot" is an ambiguous term, so it's difficult to assess this claim. However, I've just watched this scene to check and didn't see anything wrong. The shot of the White House looks fine and didn't "jump" at all.
Factual error: At the beginning when Dave is imitating the president in the car dealership commercial, he's talking about the specials on the Geo Storm and Geo Storm convertibles. Geo never made a Storm convertible. The only convertible car sold under the Geo nameplate was a convertible version of the Geo Metro, based on the Suzuki Swift.
Suggested correction: There was a Geo Storm convertible. It featured a sporty design and was offered with various engine options, including a 1.6-litre four-cylinder engine producing between 90 and 140 horsepower.
Factual error: Near the start of the movie Kevin Kline as the real president gets off the helicopter while the rotor is still spinning. The president never gets off Marine One until the rotor has stopped.
Suggested correction: The President does not wait for the rotors to stop before getting out. Standard procedure for Marine One involves the President disembarking while the rotors are still spinning at full or near-full speed. This is primarily for security and efficiency. The Secret Service prefers to move the President from the aircraft as quickly as possible. Waiting several minutes for a full "rotor brake" would leave the President exposed as a stationary target.
