What boundaries as interpreted by their legal representatives? The ones that took their case to the supreme court in 1980 or to the United States Court of claims in 1979? The only case taken before any court was in reference to the Treaty of 1877. The Treaty of 1868 established the Northern Border of Standing Rock Reservation at the 46th parallel and the Missouri River. The northern border was moved north to the Cannon Ball River by executive order in 1873. Neither the Treaty of 1868 or the executive order of 1873 have been addressed by the lawyers representing the Sioux Nation. Trying to make it a legal matter in the last six months does not make it valid. In other words, the Treaty of 1868 has never been addressed in any legal proceeding on record. The Court of Claims awarded the Sioux Nation a large monetary award which they refused because the court found that the 1877 Treaty was a violation of the 5th amendment of the constitution. The Supreme Court upheld the decision. Facts!!