Workers wait to see US Democratic presidential candidate Senator Barack Obama (D-IL) during a campaign stop at the Chrysler Plant in Sterling Heights, Michigan.

 
Workers wait to see US Democratic presidential candidate Senator Barack Obama (D-IL) during a campaign stop at the Chrysler Plant in Sterling Heights, Michigan.
Workers wait to see US Democratic presidential candidate Senator Barack Obama (D-IL) during a campaign stop at the Chrysler Plant in Sterling Heights, Michigan, May 14, 2008. REUTERS/Jeff HAYNES (UNITED STATES) US PRESIDENTIAL ELECTION CAMPAIGN 2008