Chicago Mayor Richard M. Daley laughs while surrounded by 2016 committee members and supporters at press conference Friday, Sept. 25, 2009 in Chicago, before he heads to Copenhagen, Denmark, for the Summer Olympic host city announcement on Oct. 2. Already on track to be the city's longest-serving mayor, it would cement Daley's legacy as one of the nation's most powerful mayors if Chicago beats out Tokyo, Madrid and Rio de Janeiro for the Games. AP Photo logo AP Photo 2 months ago

Chicago Mayor Richard M. Daley laughs while surrounded by 2016 committee members and supporters at press conference Friday, Sept. 25, 2009 in Chicago, before he heads to Copenhagen, Denmark, for the Summer Olympic host city announcement on Oct. 2. Already on track to be the city's longest-serving mayor, it would cement Daley's legacy as one of the nation's most powerful mayors if Chicago beats out Tokyo, Madrid and Rio de Janeiro for the Games.