A devious play goes on here with Justin Trudeau and the Liberal party.
First up he had to create the impression he was environmentally friendly and separate himself from Harper and the Conservatives.
He did this by nixing Northern gateway which had been approved by the Conservatives. At the end of the day this was meaningless as this project was never going to get off the ground. There too many unresolved land claims in the region on the part of the First Nations people and this was to be a pipeline through a region not having one before.
To placate big oil he approves twinning Kinder Morgan. This is a much easier sell as it will run along an already existing pipeline meaning many of the land claims issues already addressed.
This will triple the amount of dirty oil exported.
That said there still great opposition to this so he covers his bases by wanting Keystone Xl.
If this gets approved in the US it pretty well a done deal the Canadian side will get built as it runs through an oil friendly region of the Country alongside a pile of already existing lines.
The net result? Oil exports can increase by orders of magnitude .