see:
http://business.timesonline.co.uk/tol/business/economics/article5733723.ece
This is not a joke or some nutcase blog. It's serious business. The situation with Eastern European governments is similar, entire nations may go bankrupt. Many Euro nations are having trouble selling any government debt. The Euro currency itself may collapse. The only thing better about the dollar is that the Federal Reserve has more centralized power and the US still has a good birthrate. That said, I wouldn't invest in Treasuries, either... maybe the AU dollar or Canada (commodity based economies)
My advice: prepare for massive inflation, worldwide. Concentrate on getting the most secure employment you can find. Things will get like Zimbabwe and I'm not the first to say that.
metatron