Disregarding the possible conspiracy that America knew the Japanese were going to attack Pearl Harbor before it happened, there is a small detail that gets left out of why the Japanese didn't attempt to invade the mainland. There was supposedly a conversation between a Japanese captain and general where the captain asked if they were going to invade the mainland after attacking pearl harbor. The general said, "are you effin crazy, if we did that thier would be an American with a gun behind every blade of grass!"

God bless the redneck army!