I like the idea of that but realistically, theyre one of the richest countries and the largest economic block for the short and medium and probably long term.
They already are North Korea of the west. They have a cult deified leader, he says ridiculous things, everyone (especially the american media) take it seriously, his advisors say that what he does is "glorious, historic, unprecedented", they wear hats that say things like "Trump Was Right About Everything", many Americans have pictures of Trump hanging in their own homes. Some even have tattoos of him.
When he dies, you'll see people publically bawling. So many monuments and statues will go up. Hell be revered warmly and nostalgically in any history books or media.