"
To illustrate the long term of your plan, consider what would have
happened had we kept our nose out of Hitler's business during WWII. Sure
it's possible that he would never have made it all the way here and would
have just left us alone. Maybe he would have figured that the US was not
interesting enough to be a part of his conquest.

But if he wanted the US, and we had just sat idly by while he
Blitzkrieged all of Europe and Russia, do you think we would have had a
chance against him when he was ready to come up on our shores? With no
help from the Allies who we watched as he slaughtered them?

Highly likely that Hitler would have won. The only war the Americans have
won on their own was the Civil War.