One mistake FDR didn’t make was taking only a small fraction of the country to war. Had GWB done as FDR did, we might have a different homefront.
Had Congress declared war, things could have gone very differently, too. You don't seem to understand that our President has been hamstrung during this entire operation, and has not been able to conduct this war like we conducted WWII.
That is not a legitimate excuse for emboldening the enemy.