U.S. debt is like a Hallmark movie boyfriend who eventually gets dumped for a small town firefighter, budget watchdog warns 

This rom-com formula is now a staple of holiday TV programming: a busy professional from the big city goes back home for Christmas and falls for a local guy after admitting her current boyfriend wasn’t her true soul mate.

According to Martha Gimbel, executive director of the Yale Budget Lab, this trope could also describe the bond market’s feelings about U.S. debt.

During a Senate hearing this week, she was asked what might trigger a debt crisis and why it hasn’t happened yet...