Near the end of the movie, Paxton says that the Belgian utility company is Flemish, but the fishing rights are supposed to go to the French Belgians, causing the whole deal to fall through. The Flemish part of Belgium (Flanders) is by the sea while the French part (Wallonia) is inland, therefore there is no way the French Belgians would be offshore fisherman. It would have made sense if the company had been French, and the fisherman Flemish.
Augustus and Noel find that one of the missiles is aimed at the coordinates of Mount Rushmore saying, "That's just about Rapid City, North Dakota." Rapid City (near Mount Rushmore) is in South Dakota.