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President Trump, flanked by Commerce Secretary Wilbur Ross (left) and Energy Secretary Rick Perry (right), announces the approval of a permit to build the Keystone XL pipeline, in March 2017. Evan Vucci/AP hide caption

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Evan Vucci/AP

The pipeline on rural farmland near the small community of Amherst, S.D., was likely damaged when it was installed in 2008, federal investigators say. DroneBase via AP hide caption

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DroneBase via AP

The Keystone XL pipeline was intended to connect to this pumping station in Steele City, Neb. Keystone's parent company is suing the U.S. government because President Obama blocked the project. Nati Harnik/AP hide caption

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Nati Harnik/AP

Susan and Bill Dunavan own 80 acres of land in York County. Melissa Block/NPR hide caption

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Melissa Block/NPR

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