If anything it is crisis of elites in US. Since the second world war US has held dominant hand over its subjects (most of the world). But the elites were always smart enough to hide the amount of power, they marketed US well and understand to negotiate somewhat fairly and give some scraps to the rest (allow creating some elites in other countries). It was a straightforward deal.

But now the elites in US are just not very smart or savvy. Introduction of the tech class that are people who simply won a lottery (or scammed their way up) and are otherwise absolutely arrogant and clueless about the world. The deal just can't work anymore. It can't work because there is no deal with someone who thinks they deserve everything. The balance is off and you are now dealing with children with golden toilets OR self mythologizing guys whos deepest political analysis come from few scifi books they've read 20 years ago.