Enbridge is building the Northern Gateway . This has been in the works from , at least, 2008 . It’s not something new dreamed up to replace TransCanada’s Keystone and Harper is just doing what he would be doing , regardless of Obama’s dithering .
The US softwood lobby in Washington taught Canada a lesson. Simply , no more eggs in one basket.
http://www.northerngateway.ca/
Does Northern Gateway, as proposed, have enough capacity to replace Keystone?