President-elect Trump’s call to eliminate the debt ceiling could at first glance seem akin to cutting the Gordian Knot — a daring fix for an intractable problem. One can see the appeal of getting past the budgetary paralysis on Capitol Hill. The Constitution, moreover, requires and contains no debt ceiling. It makes clear, though, that only to Congress is granted the power to borrow on the credit of the United States. Only Congress can set a ceiling.