President Barack Obama, accompanied by first lady Michelle Obama, waved as they walked off Air Force One upon their arrival at Chicago O'Hare International Airport in Chicago, Wednesday, April 27, 2011. The president and first lady traveled to Chicago to appear on the Oprah Winfrey television show.

Chicago Mayor Richard M. Daley, second from right, walks with President Barack Obama and first lady Michelle Obama and mother-in-law Marian Robinson, right, upon their arrival at O'Hare International Airport in Chicago, Wednesday, April 27, 2011.
[photos via AP Photo]
 
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