Factory workers takes photographs as they listen to US President Barack Obama speak on the economy and fiscal cliff negotiations after touring the Daimler Detroit Diesel Plant in Redford, Michigan, December 10, 2012. AFP PHOTO / Saul LOEBSAUL LOEB/AFP/Getty Images
US President Barack Obama speaks on the economy and fiscal cliff negotiations after touring the Daimler Detroit Diesel Plant in Redford, Michigan, December 10, 2012. AFP PHOTO / Saul LOEBSAUL LOEB/AFP/Getty Images
US President Barack Obama shakes hands with workers as they perform work on an engine during a tour of the Daimler Detroit Diesel Plant in Redford, Michigan, December 10, 2012, prior to speaking on the economy and fiscal cliff negotiations. AFP PHOTO / Saul LOEBSAUL LOEB/AFP/Getty Images
US President Barack Obama(L) greets factory workers after speaking on the economy and fiscal cliff negotiations after touring the Daimler Detroit Diesel Plant in Redford, Michigan, December 10, 2012. AFP PHOTO / Saul LOEBSAUL LOEB/AFP/Getty Images
US President Barack Obama talks with workers as they perform work on an engine during a tour of the Daimler Detroit Diesel Plant in Redford, Michigan, December 10, 2012, prior to speaking on the economy and fiscal cliff negotiations. AFP PHOTO / Saul LOEBSAUL LOEB/AFP/Getty Images
US President Barack Obama tours the Daimler Detroit Diesel Plant alongside Plant Manager and Vice President of Operations Jeff Allen (L) and United Auto Workers NW Local 163 Detroit Diesel Engine Unit Shop Chairperson Mark Gibson (R) in Redford, Michigan, December 10, 2012, prior to speaking on the economy and fiscal cliff negotiations. AFP PHOTO / Saul LOEBSAUL LOEB/AFP/Getty Images
President Barack Obama watches a worker during a visit to the heavy duty engines line at the Daimler Detroit Diesel plant in Redford, Mich., Monday, Dec. 10, 2012. (AP Photo/Charles Dharapak)
President Barack Obama watches workers during a visit to the heavy duty engines line at the Daimler Detroit Diesel plant in Redford, Mich., Monday, Dec. 10, 2012. (AP Photo/Charles Dharapak)
US President Barack Obama talks with workers as they perform work on an engine during a tour of the Daimler Detroit Diesel Plant in Redford, Michigan, December 10, 2012, prior to speaking on the economy and fiscal cliff negotiations. AFP PHOTO / Saul LOEBSAUL LOEB/AFP/Getty Images
