I don't think you read it correctly. What we're doing, indeed what we've done since 2008, was borrow at a historically low interest rate to pay back interest and debt bought at a higher interest rate.
The USA enjoys a unique position with respect to sovereign debt, since it is denominated in our own currency. Also, a great deal of it is owed to ourselves and it has always been the plan of political parties to just stiff future generations. Debt crises might happen but probably not the biggest problem faced by USA. It is odd to focus on borrowing when our country faces numerous acute problems at the moment.
