China doesn't like them, Russia doesn't like them, the EU would immediately pass sanctions as it is its own territory, who else is really left? Canada and Mexico?
Countries would be scrambling to team with the USA IMO. You see the same happen for obvious "bad actors" now.
There's more than four non-European countries in the world, Christ.
Also, I think America can make it on its own, no help. And still be a powerhouse. You don't have to agree.
Well the Canadians certainly didn't forgot all those threats about becoming the 51st State.