that's not how debt works on a national level.... it's not like personal debt at all
Is that also true in the case of say, Italy's debt denominated in Euros or Illinois state debt denominated in USD? I have been meaning to read Steve Keen's work on this
The question is how will the debt translate to increased money supply over time (inflation).
A part of why the Fed (and the same is generally true of independent central banks generally) exists (and why the Fed system is comprised of large private banks) is to provide a check (and, more important, confidence among lenders) against Congress simply monetizing the debt by separating the locus of decision making for monetary policy from that for fiscal policy.