They will not go back to anything resembling the old normal :-/. Trump & his cronies have obliterated the Overton Window so hard you cannot even tell which side of the house the window used to be in. The successors for Trump will be worse, because they will not be senile old men who sabotage themselves, and the checks-and-balances against this millenia-old crap have now been pretty well dismantled :-/. We are entering an age where US will behave like a weird sort of Russia#2, run by oligarchs. In a way it was of course always run (or influenced) by oligarchs, but nothing like the scale we are going to see from now on. But.. look at the history of US, the last hundred or so years, and how they behaved south of Mexico (I am not particularly calling out US here, of course Europe has also been bad).