Efforts to clean up the Keystone XL oil spill, the largest in the United States in over a decade, are ongoing

Crews in Kansas began cleaning up after TC Energy's Keystone pipeline spilled 14,000 barrels of oil into a stream on Friday, but the reason of the worst crude spill in the United States in over a decade remained unexplained.

TC Energy of Canada noticed the breach and shut down the important artery carrying more than 622,000 barrels of Canadian petroleum per day (bpd) to various portions of the United States by Wednesday evening.<....