Mr. Obama’s spending agreement with Congress will suspend the nation’s debt limit and allow the Treasury to borrow another $1.5 trillion or so by the end of his presidency in 2017. Added to the current total national debt of more than $18.15 trillion, the red ink will likely be crowding the $20 trillion mark right around the time Mr. Obama leaves the White House.

When Mr. Obama took over in January 2009, the total national debt stood at $10.6 trillion. That means the debt will have very nearly doubled during his eight years in office, and there is much more debt ahead with the abandonment of “sequestration” spending caps enacted in 2011.

“Congress and the president have just agreed to undo one of the only successful fiscal restraint mechanisms in a generation,” said Pete Sepp, president of the National Taxpayers Union. “The progress on reducing spending and the deficit has just become much more problematic.”