The State Department review marked a major boost to the Keystone XL pipeline’s chances as President Obama nears a decision in the coming weeks. On Friday, White House Principal Deputy Press Secretary Josh Earnest rejected fears the Keystone XL would have a devastating impact on the environment. Speaking on Air Force One, Earnest said: “Thousands of miles of pipelines have been built since President Obama took office inside the U.S., and it hasn’t had a measurable impact on climate change.”