Isn’t that essentially what I said in post #16?
The Department therefore recommended that the President determine that the permit application for the Keystone XL pipeline filed on September 19, 2008 (including amendments) be denied and that he determine the Keystone XL pipeline, as presented and analyzed at this time, does not serve the national interest. The President concurred with the Departments recommendation and made that determination on January 18, 2012.
The formal approval lies with the President. He determines the course of action.