The US doesn't have a history of defaulting on its sovereign debt, and I haven't heard any serious claims that that is going to change anytime soon. In fact, its a great time for the government to take on debt, since even very long term debt costs less than inflation - 30 year debt is 1.4%, and 10 year debt is <0.7%: https://www.treasury.gov/resource-center/data-chart-center/i...
Historically the US debt balance has gone up for longer and by higher amounts than it goes down. I don't see how this pattern leads to a zero balance in the future?
