According to news reports, TC Energy plans to start preconstruction of Keystone XL pipeline in mid to late March. That's at least two weeks before a Montana federal judge will hear arguments from tribes and environmentalists asking for a preliminary injunction.
TC's activities include bringing in crews to mow and grade the sites of pipe yards in Montana at the point of crossing the U.S.-Canada border.
A lawyer for the Rosebud Sioux Tribe and Fort Belknap Indian Community says TC is jumping the gun.
SDPB's Victoria Wicks reports.