US Seeks Dismissal of Tribes’ Lawsuit Over Keystone Pipeline

President Donald Trump signs an executive order on the Keystone XL pipeline in the Oval Office of the White House. Native American tribes in Montana and South Dakota say the Trump administration unlawfully approved the oil pipeline without considering potential damage to cultural sites. Evan Vucci/AP

BILLINGS, Mont.—Attorneys for the Trump administration want a U.S. judge to throw out a lawsuit from Native American tribes trying to block the proposed Keystone XL oil pipeline from Canada to Nebraska.

Tribes in Montana and South Dakota say President Donald Trump approved the pipeline without considering the potential damage to cultural sites from spills and construction.