This is where your argument implodes.
When Pearl Harbor was attacked, the US and Japan were at war, solely by Japan's choice. Are you telling me straight-faced that the US public would NOT have gone to war after the following sequence of events?
Are you SERIOUSLY arguing this point? Are you really saying that after Japan initiated a large string of attacks on US territories and forces, AND the Germans and Italians declared war on the United States, the American public would NOT fight a war?
This is where your argument implodes.
Which part of the above do you disagree with? Are you saying that the same damage and death would have occured even with plenty of warning? Not likely.
What is the timeline for your series of events? Did Pearl Harbor occur first? Had Pearl Harbor not occured but been prevented, perhaps the other events would have been averted as well. What we do KNOW is that Pearl Harbor did NOT have to happen. But, FDR and his cronies made sure that it would.