US President Barack Obama (L) tours Cree, Inc, a manufacturer of energy efficient LED lighting, in Durham, North Carolina, June 13, 2011, prior to speaking about the economy. Standing alongside Obama are (L-R): Matthew Rose, Chairman and CEO, BNSF Railway; Jeff Immelt, Chairman and CEO, General Electric (GE), and Chuck Swoboda, CEO of Cree, Inc. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)