The US will pay off its national debt.

George W Bush : President of the United States
“In his first State of the Union address in 2001, President George W. Bush set a goal: “I hope you will join me to pay down $2 trillion in debt during the next 10 years,” he said. “At the end of those 10 years, we will have paid down all the debt that is available to retire.”
The US National debt in 2011 was more than $6 trillion.

George W Bush, State of the Union Address, Jan 2001.