Why the U.S. isn't in desperate need of the Keystone XL pipeline
The project, first announced in 2005, would have carried 830,000 barrels of crude a day from the oilsands in Alberta to Nebraska and connected with the original Keystone pipeline that runs to Gulf Coast refineries.
"I really don't think that this works out to be a major, significant change to American oil supply right now," said Warren Mabee, director of Queen's University's Institute for Energy and Environmental Policy.