It's hard to argue that France would have been a free state without the United States. Either Nazi Germany would have won/forced a stalemate and kept France or the Soviets would have gobbled up all of Europe but the United Kingdom, in which case France would have been just another Communist satellite state behind the Iron Curtain.
I'm envisioning the France that would result from "allowing" the Red Army into Paris:
1. Versailles and the Loire River Valley chateaux detonated
2. Vinyards plowed under to make space for oats for the draft-oxen
3. Paris rebuilt under the precepts of Socialist Realism
4. French-language spelling reform(s)
Yeah. God-damn those American bastards from giving the Russians their due.