Well, the statement
is simply not true. The US is always going to be solvent. Which means the government can always print/issue/release the money to cover the bills. The problem is how is this going to affect the economy. It would create huge inflation, instability and whatever else but it won't be the end of the world. Many countries have gone through that and recovered in five to ten years. Plus you get to keep everything you got that you didn't pay fair value for. If you want to prepare for those days- invest in real estate and non-perishable commodities on as much borrowed money as you can, keep paying the minimal payments and wait.