You better hope your wrong. Because if the government has no bullets left then the money the shorts make on the trade will be worthless. Further, you wouldn't be able to find a safe haven any where in the world where there is not counter party risk to our economy.
Fortunately, you are wrong. There are lots of things the US government can still do. We just need to get the toxic assets off the banks balance sheets and then companies can get the access to credit that they need once again.