Cut . . . . . let me see. . . .cut the United States into two.. Orchestrate a rebellion that would succeed. Make the new state New United States of America. It would absolve all debts to the previous United States of America. You can't collect debts from a non existent state. Or leave Texas as the only remaining state of the old USA. Let them pay the debt.
And start anew with NUSA.
Or better yet invade and annex Ireland let them be part of USA then all states but it secede. Let the State of Ireland pay the debt.
