This has been all over the news for Months. From what I understand, they have already started building the Canadian side of the pipeline.
They'll get it done, someway or another. The current request has been denied, so they are going to submit a modifed request. It'll happen, just not on schedule.
I've been thinking about it a little. And it does have a huge environmental impact "when" there is an oil leak. But that's not going to stop these polutitians..