If the US government cannot pay its obligations and the US currency is no longer the reserve currency of the world, the US Constitution provisions on this subject will be totally ignored—by all three branches of government.
You can take _that_ to the bank.
“You can take _that_ to the bank.”
My translation of your statement is that under the conditions you speak of the Congress, the President and the Courts will all agree to NOT pay some of our debt when due and continue to spend scarce federal revenue on other things.
Is that what you meant?