AB and Sask pollute sooo much on a per capita basis that if the rest of the world did so , we would all choke to death within mths. The dilemma is will humanity survive if we do not cut our global GHG emissions. The 2015 version of Canada made a commitment to keep global temperature rise to 2 degrees. That can not happen if their is any expansion to our tar sands production. So building new infrastructure will only hasten our demise. It would now appear that Canada's return has returned to the Canada of Harper and a pandering to oil and gas companies. And don't even start with the specious argument about pipelines being safer than rail. Building new pipelines will not result in a single less rail tanker carrying oil. It is not either or but both and.