Earlier quoted context omitted.
A major economy defaulting is possible (I put no limits on the ability of Congress to bungle things). But why do you think that the response would be going back to the gold standard? (Even if you think that's the answer, why do you think Congress will think it's the answer?)
Because the economies are interlinked and so a major economy defaulting starts a domino process where almost all debt goes into default. The currency of any country is legal note that says that country will pay that. What happens when the country can't? And other countries are in a similar situation? Let's say that you're wealthy and bought three houses for three families and they all owe you that money. You don't wa…
And if a country can't pay me in fiat currency, how in the world are they going to be able to pay me in gold?