When Kentucky’s Mitch McConnell took the gavel as Majority Leader of the U.S. Senate, he swore that the first bill to reach the floor would be aimed at forcing the approval of the Keystone XL pipeline. Climate activists have waged a pitched battle to block the pipeline, which would carry an abrasive sludge, mostly highly-polluting bitumen (and perhaps a soupçon of leftover sand) from fields in Canada to refineries and export terminals on the Gulf of Mexico.

+ read