Biden doesn't think 'it's time' for an Obama endorsement

Former Vice President has picked up some big endorsements in the last week or so, including a couple in Virginia after he won South Carolina's Democratic presidential primary Saturday. But in case you're wondering if former President Barack Obama will get behind his old right-hand man before Super Tuesday, Biden suggests you don't hold your breath.During an appearance on ABC's This Week on Sunday, host George Stephanopoulos asked Biden, who is back in the thick of the race but is still likely ch