Obama's 'Betting on America' tour (31 images)

President Barack Obama wipes sweat from his face as he delivers remarks at a campaign on the campus of Carnegie Mellon University in Pittsburgh, Pennsylvania on July 6, 2012. President Obama is on the second day of his, "Betting on America" bus tour through Ohio and Pennsylvania. UPI/Kevin Dietsch

President Barack Obama delivers remarks at a campaign on the campus of Carnegie Mellon University in Pittsburgh, Pennsylvania on July 6, 2012. President Obama is on the second day of his, "Betting on America" bus tour through Ohio and Pennsylvania. The tall building in the background is the Cathedral of Learning on the University of Pittsburgh campus. UPI/Kevin Dietsch

President Barack Obama greets a supporter prior to delivering remarks at a campaign event in Maumee, Ohio on July 5, 2012. UPI/Kevin Dietsch

President Barack Obama delivers remarks at a campaign event in Maumee, Ohio on July 5, 2012. Obama is on a two day bus tour of Ohio and Pennsylvania. UPI/Kevin Dietsch..