Article Photos: Oklahoma City mayor says 12,000 to 13,000 homes damaged or destroyed by May 20 tornado 83/564

White House press secretary Jay Carney gestures as he speaks during his daily news briefing at the White House in Washington, Wednesday, May 22, 2013. At the briefing Carney announced that President Obama will travel to Oklahoma to visit tornado affected communities. (AP Photo/Jacquelyn Martin) ORG XMIT: DCJM101