No surprise here. The Libs have made it all too clear that they don't really want cross-Canada oil pipelines. Too much uncomfortable politics from places like Quebec that is near and dear to the Libs. 

Canadian oil/bitumen is just to go down to the US, so they can turn around and sell it to Mexico and the rest of the world for a premium.  The over-regulation under these clowns and the NEB is phenomenal. The enviros have made a pipeline a proxy for basically everything environmental, marine protection, aboriginal interests, carbon etc - and weak-kneed politicians have gone along with them. The review process is simply dysfunctional. 

Meanwhile, the East Coast continues to bring in oil from places like Saudi Arabia and Nigeria (who have no carbon taxes) - by oil tanker (which are definitely more risky than a pipeline). Funny the enviros haven't tried to stop these tankers. Oh well, at  least we'll all be able to smoke pot legally. That is clearly the only Liberal economic priority.