Will the 2024 US election come down to choosing between two different versions of your crazy uncle: semi-senile, vulgar and capricious? Ten years ago, when Donald Trump began his presidential bid, a real clash of visions for America was at stake. "Make America Great Again" (Maga) heralded the end of globalization and the return of tariffs, hardening borders and nationalism. These were the Dark Ages as far as institutions on both sides of the Atlantic were concerned.