Actually the timeline for our entry into WWII is as follows:
12/07/1941 — Japanese attack US Naval Base at Pearl Harbor, Hawaii, Guam, Wake Island, and the Philippines [all US Territories at the time] and declares war on the US and Great Britain [including commonwealth members Australia and New Zealand]
12/08/1941 — US, Netherlands, Great Britain and New Zealand declare war on Japan
12/11/1941 — Morning European Time [which was seven hours ahead of US Eastern Time] Germany and Italy declare war on the US
12/11/1941 — Afternoon US Eastern Time, US declares war on Germany and Italy.
So we had already been attacked by the Axis powers [remember Japan was Allied with Germany and Italy] when we declared war on Japan.
And our Declaration of War against Germany and Italy came AFTER they had first declared war on the US.
So your inference that we entered WWII without any provocation is nonsense because it is contrary to the facts of history.