Not if the new debt that the government generates in the future can't be sold in Treasury Bonds for that very reason. Hence, this reveals the long-term Achilles heel of the heedles borrowing and spending strategy.
Total non-problem.
We'll see, won't we?
You clearly have no idea of how the bond market works. Treasury bonds are sold FOR dollars and redeemed IN dollars and the premiums are paid IN dollars. US government debt has been the safest in the world from the moment Hamilton reorganized it after the Constitution became operative.
It did not default or miss a payment during the Civil War, WWI, or WWII. Nothing as drastic as those times is on the horizon.
Actually we have already seen. However, those who believe that the Treasury has to worry about convertibility of its payments in foreign currency may never see.