The Assiniboine and Sioux Tribes of the Fort Peck Indian Reservation v. U.S. Department of the Interior et al

  1. June 06, 2022

    Montana Tribes Drop Keystone Pipeline Challenge

    A fight between the federal government and Montana tribes over approvals for the TC Energy's Keystone Pipeline came to an end Monday, over a year after President Joe Biden revoked a key permit for the project.

  2. August 05, 2020

    Developer Steps Into Tribes' Keystone Pipeline Challenge

    The TransCanada Keystone Pipeline and its parent corporation have urged a Montana federal court to dismiss claims brought by Montana tribes, after successfully intervening in their case challenging federal approval of pipeline construction across federal lands. 

  3. May 29, 2020

    Native American Tribes Sue Feds Over Keystone Pipeline

    Two Montana-based Native American tribes filed a lawsuit against the U.S. government on Friday challenging the approval of an oil pipeline being built near the Fort Peck Indian Reservation, claiming federal agencies failed to consider how the project would impact the tribes.