President Barack Obama greets supporters inside a hanger during his arrival at Ellington Airport, Friday, March, 9, 2012, in Houston. (AP Photo/Pablo Martinez Monsivais)

Associated Press
President Barack Obama greets supporters inside a hanger during his arrival at Ellington Airport, Friday, March, 9, 2012, in Houston. (AP Photo/Pablo Martinez Monsivais)
President Barack Obama greets supporters inside a hanger during his arrival at Ellington Airport, Friday, March, 9, 2012, in Houston. (AP Photo/Pablo Martinez Monsivais)
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