A win for Keystone XL is a defeat for the global warming movement. Green groups view Keystone as an opportunity to regain momentum and offset their losses after the death of cap-and-trade. If friends of affordable energy win this fight, which seems likely, the greenhouse lobby will take another hit to its prestige, morale, and influence eystone XL strains relations between Obama and his environmentalist base. If Obama approves the pipeline, greenies will be less motivated to work for his re-election. If he disapproves, Republicans and moderate Democrats will hammer him for killing job creation and increasing pain at the pump. Either way, the prospects for new anti-energy legislation should be dimmer eystone XL is bringing aging, New Lefties out of the woodwork, where they can misbehave and get themselves arrested.