President Barack Obama speaks in Chicago, Thursday, Feb. 19, 2015, during an event to designate the Pullman neighborhood a national monument, commemorating 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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