Post Carbon Fellow J. David Hughes argued that more pipelines are not in the Canadian national interest in this dialogue at Alberta Views.

From the article:

The Notley government’s Climate Leadership Plan allows for a 40 per cent increase in oil sands GHG emissions from 2016 levels. This will require the rest of Canada’s economy to shrink emissions 48 per cent by 2030 and 88 per cent by 2040 to meet Paris targets—an unlikely prospect, barring economic collapse. And since Canada is a mature exploration region for conventional oil and gas, the only significant production growth can be from high-environmental-impact oil sands and fracked oil and gas…