The idea that the U.S. has some unspecified credit limit is economic illiteracy. The notion is false on many levels.
The U.S. has no trouble finding lenders willing to lend it money at record low interest rates.
Those lenders are largely other Americans, who earn interest, which is income to them.
These low borrowing costs, in turn, reflect what seems to be a persistent
savings glut — that is, the private sector wants to save more than it’s willing to invest, even with very low interest rates.
Given this reality, why not put some of those excess savings to work in high-return public investments? Should we really refuse to spend money repairing sewer systems or providing child nutrition if doing so raises the deficit a bit, with only a minor impact on future interest costs?
As for interest, we pay in interest roughly what we paid a decade ago.
So, what exactly is the problem that you are trying solve by balancing the budget, an act that would cause a recession due to the implicit austerity.