Democratic presidential candidate Joe Biden pauses while speaking after receiving an endorsement from House Majority Whip James Clyburn (D-SC) on February 26, 2020 in North Charleston, South Carolina. (Photo by Drew ...Democratic presidential candidate Joe Biden pauses while speaking after receiving an endorsement from House Majority Whip James Clyburn (D-SC) on February 26, 2020 in North Charleston, South Carolina. (Photo by Drew Angerer/Getty Images)MORE LESS