Photos: Barack Obama speaks at "KEEPING AMERICA COMPETITIVE' summit today in Pittsburgh
Democratic presidential candidate Sen. Barack Obama D-Ill., left, speaks at an economic competitiveness summit,Thursday, June 26, 2008, at Carnegie Mellon University in Pittsburgh.
(AP Photo/Alex Brandon)
Democratic presidential candidate Sen. Barack Obama D-Ill., listens during an economic competitiveness summit, Thursday, June 26, 2008, at Carnegie Mellon University in Pittsburgh.
(AP Photo/Alex Brandon)
Massachusetts Institute of Technology President Susan Hockfield, left, listens to Democratic presidential candidate Sen. Barack Obama D-Ill., center, with General Motors Chairman and Chief Executive Officer G. Richard Wagoner, Jr., Thursday, June 26, 2008,, at a competitiveness summit at Carnegie Mellon University in Pittsburgh.
(AP Photo/Alex Brandon)
Democratic presidential candidate Sen. Barack Obama D-Ill. smiles during a panel discussion with business, labor and academic leaders, Thursday, June 26, 2008, during an economic discussion in Pittsburgh.
(AP Photo/Keith Srakocic)
Democratic presidential candidate Sen. Barack Obama D-Ill., center, greets audience members after taking part in a panel discussion with business, labor and academic leaders, Thursday, June 26, 2008, during an economic discussion in Pittsburgh. (AP Photo/Keith Srakocic)