President Obama said he regrets that the rancor between the parties has grown during his watch. "I guarantee I'll keep trying to be better so long as I hold this office," he said. Susan Walsh/AP hide caption

toggle caption Susan Walsh/AP

Protesters close their eyes in silent prayer as they stand on the South Carolina Statehouse steps during a rally to take down the Confederate flag, Saturday, June 20, 2015, in Columbia, S.C. Rainier Ehrhardt/Associated Press hide caption

toggle caption Rainier Ehrhardt/Associated Press

South Carolina Gov. Nikki Haley along with Sens. Tim Scott and Lindsey Graham (right, far right) and other lawmakers and activists call for the Confederate flag to be moved from state Capitol grounds. Joe Raedle/Getty Images hide caption

toggle caption Joe Raedle/Getty Images

Nikki Haley speaks to supporters Tuesday at an election party after winning the South Carolina GOP gubernatorial nomination. Chris Keane/Getty Images hide caption

toggle caption Chris Keane/Getty Images