you could add a couple zeros to that and it probably has no affect.
Of course it would. Nobody is going to lend us money when it is clear they will never be repaid.i'll check it out but the us government can only fail if its military fails. which is not likely to happen. 
The military will only survive as long as we can pay for it. If we don't raise the debt limit, or no one will lend to us, or we devalue the dollar by printing trillions more, then the government can't keep spending, and the military budget gets slashed by billions.