Typical Brit crappola. The USA did not sit out the early part of the war. Lend Lease was in effect, our factories were gearing up. We escorted convoys halfway across the Atlantic. The Convoys were filled with all kinds of supplies.
We definitely were on a side. And I know its quaint today, but back then going to war just because England and Germany decided to was not anything MOST Americans were that hot to do.
That is not like actually fighting and losing machinery and American lives and at the levels of war.
And hind sight is probably 20/20 but it was definitely in our interest to be in the fight (even though we didn’t know it at the time).