Obama kills thousands of jobs for climate-change symbolism.

President Obama personally killed the Keystone XL pipeline on Friday, dismissing the project as a mere “symbol” that “has occupied what I, frankly, consider an overinflated role in our political discourse.” The irony is that the pipeline’s benefits would be tangible, while the symbolism and overinflation are entirely political. A President more invested in the real economy would have long ago welcomed Keystone’s contribution to North American energy development. But on Friday Mr. Obama emerged, seven years into both his Presidency and multiple State Department reviews of the pipeline, to declare that Keystone is not in the national interest of the United States. This position is—to borrow his phrase—well outside the bipartisan political center. Mr. Obama would have been more honest if he’d admitted that he is bowing to the interests of the green-left fringe and the Democratic donors who oppose all forms of carbon energy. A broad Congressional majority voted to approve Keystone this year, including nine Democrats in the Senate and 28 in the House, falling only a few votes short of a veto override. Business, consumers, labor unions and America’s No. 1 trading partner Canada also wanted to connect Alberta’s oil sands to Gulf Coast refineries, which would create thousands of jobs and strengthen energy security.

Even as he killed Keystone, Mr. Obama urged Congress to “pass a serious infrastructure plan.” But what are pipelines if not the definition of infrastructure—and this one shovel-ready besides, at no cost to taxpayers?

To promote his climate-change ambitions, by Mr. Obama’s own admission. Mr. Obama said in his statement Friday that the U.S. “is now a global leader” on climate change “and frankly, approving this project would have undercut that global leadership.” So he will now dump Keystone’s corpse at the Paris global-warming summit in the coming weeks and demand that other countries make their own ritual sacrifices.

The larger and more dangerous symbolism is what Mr. Obama’s refusal reveals about today’s Democratic Party. Liberals used to favor a price on carbon, which would be damaging enough for economic growth. Now they believe fossil fuels must remain underground forever and favor any obstruction against their development. Hillary Clinton now embraces this same philosophy.

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