FARGO, N.D. (AP) — The interior solicitor in the Biden administration said in an opinion released Friday that the mineral rights under the original Missouri River riverbed belong to a North Dakota tribal nation. The 68-page memorandum posted by the U.S. Department of Interior is contrary to a May 2020 Trump administration opinion concluding that the state is legal owner of submerged lands beneath the river where it flows through the Fort Berthold Reservation. The Mandan, Hidatsa and Arikara Nation had sued over that memo, which rolled back an Obama administration opinion favoring the nation, also known as the Three...