US Democratic presidential candidate Senator Barack Obama campaigns in Chicago

 
US Democratic presidential candidate Senator Barack Obama campaigns in Chicago
Presumptive Democratic presidential nominee Senator Barack Obama (D-IL) (R) speaks with Representative Rahm Emanuel (D-IL) during a Chicago 2016 Olympics rally in Chicago June 6, 2008. REUTERS/John Gress (UNITED STATES) US PRESIDENTIAL ELECTION CAMPAIGN 2008 (USA)