US Government won’t fail. They can certainly just default on all debt and keep on going like many other countries. It will be a shitty country going forward, but not a failed one.

The best thing you can do is diversify assets to be prepared for that scenario, so you do not fall into the hell of a permanent underclass, in perpetual servitude.

The US defaulting would easily trigger the worst economic shock the world ever experienced. Other countries that defaulted weren’t the hegemonic power