FILE - This March 22, 2012 file photo shows President Barack Obama arriving at the TransCanada Stillwater Pipe Yard in Cushing, Okla. Embarking on a second term, Obama faces mounting pressure on a decision he had put off during his re-election campaign: whether to approve the $7 billion proposed Keystone XL oil pipeline between the U.S. and Canada. (AP Photo/Pablo Martinez Monsivais, File)

Associated Press
FILE - This March 22, 2012 file photo shows President Barack Obama arriving at the TransCanada Stillwater Pipe Yard in Cushing, Okla. Embarking on a second term, Obama faces mounting pressure on a decision he had put off during his re-election campaign: whether to approve the $7 billion proposed Keystone XL oil pipeline between the U.S. and Canada. (AP Photo/Pablo Martinez Monsivais, File)
FILE - This March 22, 2012 file photo shows President Barack Obama arriving at the TransCanada Stillwater Pipe Yard in Cushing, Okla. Embarking on a second term, Obama faces mounting pressure on a decision he had put off during his re-election campaign: whether to approve the $7 billion proposed Keystone XL oil pipeline between the U.S. and Canada. (AP Photo/Pablo Martinez Monsivais, File)
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