The first misconception is that the US economy is anything like a household economy. That fallacy is present at least once in this thread.
The second misconception is that the US is going to "bankrupt" or be unable to pay it's obligations.
As things stands, the only two concerns the US economy has going forward are:
A) Inflation, due to the population having too much money to spend (we're not there)
B) Abusing and losing it's position as the world's reserve currency (doubtful at this stage)
Anything else right now is political pandering. There's no "burden of debt" left to our children

, etc.