Shorts are expensive to keep on long term, so unless you are very confident of a collapse happening like, this month, probably better to instead be long stuff that would benefit from US collapse. I can't actually think of major asset classes that would benefit but there are probably small plays like particular public companies or commodities with non-US supply chains for things where the current cheapest supplier is American (European banks? Soybean futures for delivery in Asia?)

The Americans can afford to be irrational longer than you can remain solvent.

Maybe. But if the current efforts keep up at this pace, the majority of citizens are going to be very broke pretty fast.

Long Gold, short USD, short Treasury.

Not financial advices.