President Barack Obama waves as he is introduced before delivering remarks during his visit to the Jefferson North Chrysler Plant in Detroit, Friday, July 30, 2010, where the Jeep Grand Cherokee is assembled. (AP Photo/Pablo Martinez Monsivais)

Photo by: Pablo Martinez Monsivais

President Barack Obama waves as he is introduced before delivering remarks during his visit to the Jefferson North Chrysler Plant in Detroit, Friday, July 30, 2010, where the Jeep Grand Cherokee is assembled. (AP Photo/Pablo Martinez Monsivais)