President Barack Obama arrives to speak at an event in Chicago, Thursday, Feb. 19, 2015, to designate the Pullman neighborhood a national monument, to commemorate African-Americans who served as porters, waiters and maids on the iconic Pullman sleeper cars. In the process, the president's trip to his hometown could help boost turnout for his former chief of staff, Rahm Emanuel, who is running for re-election in Tuesday's contest. Obama also announced Browns National Monument in Colorado and Honouliuli National Monument in Hawaii. (AP Photo/Evan Vucci)
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