I was thinking more of the POD being a terrible depression which caused the revolution, so it wouldnt matter which president was in power. I thought that if ever there was a chance of a communist revolution in USA (really unlikely given everyones belief in liberty freedom etc) that it would have been in the 1930s depression.
Anyway, I was thinking what would have happened in Europe with Hitler if the USA was communist??? (Suppose Britain, France still democratic) Maybe Britain would have had no US support in the battle of britain.. until Hitler attacked the USSR, then the US might have about faced and declared war on Germany.
Maybe the USSR would have declared war on Japan after the attack on Pearl Harbor.
Suppose then the USA, USSR, Britain defeat the Axis, what would happen with the Cold War? I doubt that a Communist USA would take orders from Moscow, so there would be friction, possibly there would be a Cold War between the two countries anyway.. Eventually the system would probably have collapsed, maybe in the 1980s just like it did in our TL and given way to democracy again. Or maybe there would be freedom fighters and civil war in the US like in that Patrick Swayze film, Red Dawn, until the Reds were overthrown