The American people never wanted to get into the World war. since they just wanted to be isolated. Roosevelt tried to get congress to go to war but they turned it down. There is a conspiracy theory about Pearl Harbor that FRD moved all the naval ships in the pacific to Pearl Harbor and making the battleships get lined up in a row and side by side while the Aircraft Carries was still out at sea. and Pearl Haber only has one out to the ocean making it harder for them to leave if any boats were about to get moving. It was just to good of a target to pass up.
