Mealey's (March 11, 2019, 1:04 PM EDT) -- SAN FRANCISCO — Two Native American tribes on March 6 filed an amicus curiae brief in the Ninth Circuit U.S. Court of Appeals arguing that it should deny a motion to stay an injunction filed by a pipeline company that wants to proceed with construction of the Keystone XL Pipeline, which the tribes say would threaten their land and water because it would transport hydraulically fractured oil (Indigenous Environmental Network, et al. v. United States Department of State, et al., No. 18-36068, 9th Cir.)....