True, but it still seems daft for Hitler to initiate war against the USA when he was already fighting the USSR, not to mention us!
Technically he just declared war after the Pearl Harbour attack. Practically the US were in the war already (lend and lease, 30W anti submarine etcetc)
At that point it didnīt make a difference anyhow, the USSR was WAY more any German leader would have been able to swallow. The 2 front war was a trauma Hitler always told his Generals he would avoid at any price. His word on this proofed to be as trustworthy as usual...and the Russian 'Untermenschen' gave our troops quite some fights. (an uncle of mine was on one of the last Ju52s out of Stalingrad...he still shook 40 years after this experience when talking about the experience)
Now for the UK, I wouldnīt mind being the Gauleiter for, say, Wales, but then in Autumn 1940 it was absolutely clear 'we' could not win over the RAF. Without the air supremacy in invasion would simply not been possible. The plan to rely on the subs was doomed, since we simply didnīt have enough at the time. Would there have been 500-600 of em in 1940, then... maybe...