I know, I just don't care. They attacked us, what difference does it make if it's the "mainland?" They repeatedly attacked us. You seriously think it's less important that they attacked our shipping and resources rather than the mainland proper? I don't. You attack us, you attack us.Before Pearl Harbor the Germans did not, nor did they invade or attack the mainland in the same manner as the Japanese..
There is enough evidence to show that FDR and the military knew that is was coming. If we had taken out that force and Pearl Harbor was never attacked, do you think Americans would have supported getting involved with WWII?
Begging the question. I don't know where you are getting that information. The Japanese decision to attack is well chronicled and I know of no information going to the US. What are you saying that based on?
Even the German Generals knew they could not attack mainland USA. That is why they were trying to coordinate with the Japanese on many things.
Again, don't care. They attacked us, that is a declaration of war regardless of whether it was the US proper or not