President Barack Obama greets members of the audience during his townhall at the Ritchie Coliseum on the campus of University of Maryland, Friday, July 22, 2011 in College Park, Md. (AP Photo/Pablo Martinez Monsivais)
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President Barack Obama greets members of the audience during his townhall at the Ritchie Coliseum on the campus of University of Maryland, Friday, July 22, 2011 in College Park, Md. (AP Photo/Pablo Martinez Monsivais)
