Officials say the twisters are "violent and dangerous," but there are no immediate reports of injuries or significant damage.

Republican Senators Rand Paul, Mitch McConnell and Rob Portman continued Sunday to press the Obama administration on the Internal Revenue Service scandal that's engulfed the White House.

President Obama took a break from the trifecta of controversies—IRS, Benghazi, Department of Justice—swirling around the White House on Sunday to deliver the commencement at Morehouse College, the historically black, all-male institution in Atlanta.