** FILE ** Rahm Emanuel, a former congressman and White House chief of staff, announces his candidacy for mayor of Chicago on Nov. 13, 2010, in the Windy City. (AP Photo/Paul Beaty, File)

Photo by: Paul Beaty

** FILE ** Rahm Emanuel, a former congressman and White House chief of staff, announces his candidacy for mayor of Chicago on Nov. 13, 2010, in the Windy City. (AP Photo/Paul Beaty, File)