Keystone XL pipeline has now leaked more crude oil than any other gas pipe in the United States in the past 12 years, following last week’s massive oil spill in Kansas. Over the weekend, TC Energy shut down the system after an oil spill released 14,000 barrels of oil into a creek in Washington County, Kansas. It was the worst leak in the 12-year history of the pipeline, which runs from Canada to the U.S. Midwest. The spill was the latest in a series of accidents in the last ten years and means that the total leaked by the pipeline is now an estimated 26,000 barrels, according to data from the …