President Barack Obama waves to reporters as he walks on the South Lawn of the White House in Washington, Tuesday, Jan. 29, 2013, as he returns from a trip to Las Vegas where he spoke a

 

              President Barack Obama waves to reporters as he walks on the South Lawn of the White House in Washington, Tuesday, Jan. 29, 2013, as he returns from a trip to Las Vegas where he spoke a
President Barack Obama waves to reporters as he walks on the South Lawn of the White House in Washington, Tuesday, Jan. 29, 2013, as he returns from a trip to Las Vegas where he spoke about immigration. (AP Photo/Charles Dharapak)