Not before all USD in whatever form that was paid by USA gov, business and private persons for imported goods and resources and that belong now to non-US governments, businesses and private persons will be returned to USA and exchanged to something real and useful that is now belong to USA.

Huge part of US national debt is a foreign debt, i.e. US got something real from abroad in exchange to USD. That USD abroad is an obligation of US to accept that USD in future and exchange it to something real.

So, US have to pay out its obligations to the world in first place.

And only then, you coud do with US currency whatever you decide to be right thing to do.

Not before all USD in whatever form that was paid by USA gov, business and private persons for imported goods and resources and that belong now to non-US governments, businesses and private persons will be returned to USA and exchanged to something real and useful that is now belong to USA.

And only then, you coud do with USA currency whatever you decide to be right thing to do.