Whatever it takes to stall until the elections.
check it out:

“Controversial” is the term so often associated with the Keystone XL Pipeline project, but with American support growing ever stronger over the past five and a half years, during which time the project has been under review (polls show Americans favor the project by a margin of nearly 3:1), one may naturally wonder: where’s the controversy?

TransCanada Corp., the company pressuring the Obama Administration’s stubborn State Department for a Presidential Permit to start construction on the Keystone project, said in its most recent delay, the State Dept. claims it “needs more time to review all of the public comments that have been received,” although, “we also know that about 900,000 of the comments the State Department has received came from overseas, and as such, should have no bearing on a decision regarding our Presidential Permit.”