Plot hole: Property is destroyed, museum windows are crashed through, a giant octopus splashes about in the National Mall's reflecting pool, and even the statue of Honest Abe at the Lincoln Memorial comes alive. With all this occurring, not a single D.C. resident seems to notice and nary a single police officer turns up to investigate the goings-on.
Plot hole: Before Amelia Earhart flies herself and Larry back to NYC from Washington D.C. Larry says that there is an hour of darkness left. The time needed to fly from Washington D.C. To NYC and back is well over an hour, so it's not possible to make it in the time given and Amelia would have turned to dust.
Suggested correction: This mistake is not wrong however wouldn't you think they would have night guards in each of the museums, but no guard is ever seen anywhere.
Creating a silly, Deus Ex Machina solutions for obvious plotholes never resolves them. There is absolutely no way that these things would remain unnoticed by anyone. This entry is correct. This is indeed a plothole because it's much too confusing to be explained.