Let's see, we'd have to have a touch of Mexico on the flag, otherwise it'd be insulting to Hispanics. Red and green with a dove. (Any and all depiction of the American eagle would be verboten.) Just around the corner would be putting the US military and economy under UN control, the World court superceding US law, which by then would be gone anyway, and UN taxation of every human being on the planet. Since the UN is run by third world thugs, we'd be in considerable trouble. Doomed, in fact.
Well there is a little item in french history that our royalty better pay attention too. It's called the storming of the Bastille.