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.





