"The Keystone XL pipeline, awaiting a thumbs up or down on a presidential permit, would increase the import of heavy oil from Canada's oil sands to the U.S. by as much as 510,000 barrels a day, if it gets built.

Proponents tout it as a boon to national security that would reduce America's dependence on oil from unfriendly regimes. Opponents say it would magnify an environmental nightmare at great cost and provide only the illusion of national benefit.

What's been left out of the ferocious debate over the pipeline, however, is the prospect that if president Obama allows a permit for the Keystone XL to be granted, he would be handing a big victory and great financial opportunity to Charles and David Koch, his bitterest political enemies and among the most powerful opponents of his clean economy agenda."

David Sassoon reports for SolveClimate February 10, 2011.
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