The U.S can only pay its debts off via inflation.
That means creditors are about to have it so far shoved up their asses that they'll cringe and cry. Each dollar they lent to (bought from) the U.S. has lost between 20% and 50% of its value (depending on the country buying U.S. treasuries).
The problem is, they need our insane and voracious consumers to support their exporters and own economies. Who else will buy as much of the shit they produce as the U.S.? The Chinese save 50% of their money...the average U.S. citizen spends all of their paycheck plus goes into debt by about 5% of their gross income each year.
So the status quo lives for now.
Watch out when the U.S. consumer doesn't make the world economy go 'round no longer, however.
The U.S. will no longer be able to finance deficit spending, and that will be a game changer and a standard of living changer that will rock this nation to its core. If you can guess when that will happen within a year or so, congratulation, you should be very wealthy at some future time.