风险应该很小，政府总有收入，也会以付债优先。
One cannot predict how Treasury will operate when the debt limit binds, given that this would be unprecedented. Treasury did have a contingency plan in place in 2011 when the country faced a similar situation, and it seems likely that Treasury would follow the contours of that plan if the debt limit were to bind this year. Under the 2011 plan, there would be no default on Treasury securities. Treasury would continue to pay interest on those Treasury securities as it comes due. And, as securities mature, Treasury would pay that principal by auctioning new securities for the same amount (and thus not increasing the overall stock of debt held by the public). Treasury would delay payments for all other obligations until it had at least enough cash to pay a full day’s obligations. In other words, it will delay payments to agencies, contractors, Social Security beneficiaries, and Medicare providers rather than attempting to pick and choose which payments to make that are due on a given day.
