We shouldn’t use the T-Coin to collateralize more debt.
We should simply send Krugman to China with it and have him tell the Chinese, “Here, this will pay off a trillion of our debt today. We’ll mint some more and bring them over as needed for you to put in YOUR treasury and pay off additional debt.”
After Krugman’s body is returned, I’m sure we can always find another Democratic volunteer to carry out additional payments.