Very interesting. Always seem to be learning something new about this game. We have always gone on the assumption that until the US is actively at war, they can not land troops or planes on an Allied country because they are not technically Allies yet. Of course, once the USA is dragged into war on either side, they DOW on all Axis anyway so they can land anywhere that is Allied. We’ve never had a game where USA did not DOW on all the Axis. Still, an interesting theoretical problem.
Thanks for your answers kcdzim.