On October 14, Senators Bernie Sanders (I-VT), Patrick Leahy (D-VT), and Ron Wyden (D-OR) asked the State Department to begin a fresh environmental review for the proposed Keystone XL pipeline, which if completed will carry tar sands crude from Alberta to the gulf coast. The Senators argued the previous analysis conducted by Cardno Entrix, a Houston-based environmental consulting firm, could be compromised owing to the company’s past business relationships with TransCanada Corp., the firm sponsoring the pipeline. The senators pointed out that the Environmental Protection Agency initially found so many potential problems in the Cardno Entrix’s draft environmental impact statement the agency ordered a supplemental statement. On August 26, State’s final environmental impact assessment found that there was no reason the pipeline should not go ahead as planned, but the final decision on granting the pipeline a permit will take place by the end of the year.