President Barack Obama waves as he leaves a town hall meeting, Wednesday, Aug. 17, 2011, at Wyffels Hybrids Inc., in Atkinson, Ill., during his three-day economic bus tour. (AP Photo/Carolyn Kaster)

Associated Press
President Barack Obama waves as he leaves a town hall meeting, Wednesday, Aug. 17, 2011, at Wyffels Hybrids Inc., in Atkinson, Ill., during his three-day economic bus tour.  (AP Photo/Carolyn Kaster)
President Barack Obama waves as he leaves a town hall meeting, Wednesday, Aug. 17, 2011, at Wyffels Hybrids Inc., in Atkinson, Ill., during his three-day economic bus tour. (AP Photo/Carolyn Kaster)
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