If the US owes 38T in debt, and they plan to pay that back with the "systems" own paper money, and take control of spending power using "we the peoples" coinage, where does that leave you on the global stage?

If faith in the dollar crashes globally, and the US is nothing but a service economy (you make nothing the globe wants), how does
A) the US plan on trading when the world doesnt want your money
B) The US still expect to hold the global hegemony on oil and military might