U.S. President Barack Obama and first lady Michelle Obama acknowledge supporters during a campaign rally at The Ohio State University in Columbus

 
U.S. President Barack Obama and first lady Michelle Obama acknowledge supporters during a campaign rally at The  Ohio State University in Columbus
U.S. President Barack Obama and first lady Michelle Obama acknowledge supporters during a campaign rally at The Ohio State University in Columbus, Ohio May 5, 2012. President Obama officially kicked off his reelection campaign on Saturday with visits to Ohio and Virginia. REUTERS/Kevin Lamarque (UNITED STATES - Tags: EDUCATION POLITICS ELECTIONS)