The national debt has now increased $4 trillion on Obama's watch

The debt was $10.626 trillion on the day Obama took office. The latest calculation from Treasury shows the debt has now hit $14.639 trillion. It's the most rapid increase in the debt under any U.S. president. The national debt increased $4.9 trillion during the eight-year presidency of George W. Bush. The debt now is rising at a pace to surpass that amount during Obama's four-year term.