That's never going to happen Dru.  As the world stands right now it's in no  country's interest to drive the US into economic problems because it would fuck up a lot more than just the US. 
  
What I was driving at was some act of terrorism like a dirty bomb set off in a major city, or something like Boeing, Microsoft, and a few other big employers leaving Seattle all at once.  
  
There are always those who will benefit from a global depression, even if it isn't the working man.