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CHICAGO, IL - APRIL 8: Chicago's Mayor Rahm Emanuel places his hand over his face as he laughs at his own joke during a news conference at Carole Robertson Center for Learning April 8, 2015 in Chicago, Illinois. Emanuel was elected to his second term as mayor after defeating Cook County Commissioner Jesus 'Chuy' Garcia in a runoff election. (Photo by Joshua Lott/Getty Images)

CHICAGO, IL - APRIL 8:  Chicago's Mayor Rahm Emanuel places his hand over his face as he laughs at his own joke during a news conference at Carole Robertson Center for Learning April 8, 2015 in Chicago, Illinois. Emanuel was elected to his second term as mayor after defeating Cook County Commissioner Jesus 'Chuy' Garcia in a runoff election. (Photo by Joshua Lott/Getty Images)