lets just say, borrowing is favourable for the usa. If they decide to just not pay, noone is gonna get the money back. Of course, then you have no one willing to borrow you money, then you can still start printing.

Say the us owes 1 Trillion us dollars. They print so much money inflation made that 1 Trillion equal to the value of one Apple. Boom, you can pay all your state debt with 1 apple. For convienence you introduce Trump Dollars afterwards with exchange rate 1:1Trillion.

I think non banana republic consensus is, states shouldnt borrow money to cover running costs but to cover investments. investments provide a ROI you can pay the debt back with.