Opinion | The Constitution Has a 155-Year-Old Answer to the Debt Ceiling - The New York Times

Then there is Section Four, which offers a way out of the current impasse over increasing the debt ceiling. "The validity of the public debt of the United States," it declares, "shall not be questioned." …

https://www.nytimes.com/2023/01/23/opinion/fourteenth-amendment-debt-ceiling.html