"The Interior Department has reversed a Trump administration decision determining that a portion of the Missouri River was under the jurisdiction of the state of North Dakota rather than a Native American reservation.

Trump officials had concluded a part of the river that flows through the Berthold Indian Reservation was within the state’s jurisdiction rather than that of the Mandan, Hidatsa and Arikara Nation, the reservation’s three affiliated tribes.

“The previous administration’s M-Opinion overturned decades of existing precedent holding that the Missouri riverbed belonged to the Mandan, Hidatsa, and Arikara (MHA) Nation,” an Interior spokesperson said in a statement. “Today’s action will allow us to review the matter and ensure the Interior Department is upholding its trust and treaty obligations in accordance with the law.” "

Zack Budryk reports for The Hill March 22, 2021. [2]