Matthew Barzun, National Finance Chair for Obama for America 2012, and Brooke Barzun arrive for the Official Dinner in honor of Prime Minister David Cameron of Great Britain and his wife, Samantha, at the White House in Washington, D.C. on Tuesday, March 14, 2012..Credit: Ron Sachs / CNP.(RESTRICTION: NO New York or New Jersey Newspapers or newspapers within a 75 mile radius of New York City)
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