Washington, DC - September 16, 2009 -- United States President Barack Obama and his wife Michelle watch a demonstration of judo during an event on Olympics, Paralympics and Youth Sport Canadian on the South Lawn of the White House, Washington, DC, September 16, 2009. .They are supporting the candidacy of the city of Chicago as the city host for the Summer Olympic Games 2016..Credit: Aude Guerrucci / Pool via CNP
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