It's interesting that you mention America's debt. America's monetary system has essentially allowed them to create money out of nothing with the Federal Reserve Bank, through loans. And because of interest, America essentially will never be able to repay the money it owes because it will always be more than it has.
You should check out the documentary Zeitgeist. One part Religion, one part 9/11 Conspiracy and one part America's Federal Reserve Bank.
Anything that endorses the 9/11 conspiracy crap is not worth watching, regardless of how many neckbeards wet themselves over it.
The value of the American dollar isn't really important. What's important is the general economic situation. Right now, we're recovering from what could have been an economic collapse worse than the Great Depression (by the way, the guys responsible got off with a slap on the wrist, as usual).