FILE - This March 22, 2012 file photo shows President Barack Obama arriving at the TransCanada Stillwater Pipe Yard in Cushing, Okla. Obama has revived debate about the number of jobs t

 

              FILE - This March 22, 2012 file photo shows President Barack Obama arriving at the TransCanada Stillwater Pipe Yard in Cushing, Okla. Obama has revived debate about the number of jobs t
FILE - This March 22, 2012 file photo shows President Barack Obama arriving at the TransCanada Stillwater Pipe Yard in Cushing, Okla. Obama has revived debate about the number of jobs that would be created by the proposed Keystone XL oil pipeline from Canada to Texas. The 1,700-mile pipeline would carry oil from tar sands in Alberta to refineries in the Houston area, passing through Montana, South Dakota, Nebraska, Kansas and Oklahoma. During a jobs speech Tuesday, July 30, 2013, in Tennessee, Obama downplayed the pipeline’s effect on jobs, calling it a "blip" compared to the overall economy. He also made that point during an interview with The New York Times last week. (AP Photo/Pablo Martinez Monsivais, File)