After more than a half-decade of controversy, the Obama administration on Friday rejected a permit to build the Keystone XL pipeline, an $8 billion steel straw that would have doubled the flow of oil from Canada to the Gulf Coast.
The president tried to downplay the decision, claiming that the pipeline had taken on an “overinflated role” in American politics and environmental activism alike. “This pipeline would neither be a silver bullet for the economy, as was promised by some, nor the express lane to climate disaster proclaimed by others,” Obama said in an announcement at the White House.
In an earlier speech, however, he called the pipeline’s net effect on the climate “absolutely critical to determining whether this project is allowed to go forward.” And in his remarks on Friday, he again summoned the specter of global warming.
WATCH: State Department rejects delay for Keystone permit review
“If we’re going to prevent large parts of this Earth from becoming not just inhospitable, but uninhabitable,” the president said, flanked by Vice President Biden and Secretary of State John Kerry, “we must act not later, not someday, but right here, right now.”
Kerry, whose department actually issued the rejection, echoed Obama’s sentiments in a statement. “The critical factor in my determination was this: Moving forward with this project would significantly undermine our ability to continue leading the world in combating climate change.”
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Obama was already staking his remaining time in office on an all-out push to address the issue. But the decision to block the Keystone XL pipeline is his most significant yet, a historic win for activists and a major milestone in the politics of climate change. It marks the first time that a world leader has denied a fossil fuel project after publicly considering its effect on the Earth.
A decision to slow the expansion of oil is in line with mainstream science, which holds that if the planet is to avoid irreversible damage — and an unmanageable explosion of storms, drought, and rising tides — at least 70% of the known oil, coal and gas reserves in the world will need be left in the ground. The value of these “stranded assets” is about $100 trillion, according to a recent report by Citigroup.
But until Friday’s announcement, no world leader had ever acted on that science. The president’s decision will set off a difficult, multi-decade debate about who gets to burn what fossil fuel, and how the companies involved should be compensated or penalized along the way. Some of that discussion will get underway on Nov. 30, the first day of the United Nation’s climate talks in Paris.
Obama’s decision on Friday adds momentum to the talks, which may yield the first global agreement to reduce emissions. To make his case and help America do its part, the president has already traveled to the melting edge of the Alaskan Arctic, rallied alongside climate allies like Pope Francis, and — through an executive order — issued the first U.S. limits on power plant emissions.
Those efforts have been sharply attacked by Republicans, who generally question the severity of climate change and — in the minority among the world’s political parties — doubt the need to act.
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“Barack Obama and Hillary Clinton caved to extreme special interest groups and rejected good American jobs,” said Republican Party Chairman Reince Priebus. “It’s time for new leadership in the White House.”
Many of the people vying for that position took their attacks to Twitter on Friday.








