The US emits two types of scrapes of paper, one of which (bonds) promises the other (the us dollar) and the "experts" somehow think america can actually go bankrupt. That's hilarious.
The US is not going to go bankrupt, but the purchasing power of the dollar will continue to go down and down and down.
So US manufacturing would go up and up by that logic. Not to mention the US can simultaneously restrict the money supply via increased taxes at same time. The US also could just stop issuing bonds entirely and simply create the currency directly rather than the Rube Goldberg that is the bond market
The US also has to purchase raw materials and imports at higher and higher and higher prices.
You will not go bankrupt, its just that a BigMac will cost you $10,000.