Also, the US can print more money or ask for more money from investors. There is a limit to how far that can go, of course.

Zimbabwe passed that limit long ago. So $217 left is a much more meaningful problem there.

The US simply has more depth in its economy to withstand the negative influence of her politicians. We already see the cliff without the public having much say as to how it will be corrected let alone when. Zimbabwe didn't happen overnight, their economy just didn't have the resilience of many Western ones.