On June 30, 1980, the U.S. Supreme Court ruled that the government had illegally taken land in the Black Hills, granted by the 1868 treaty by illegally deleting Article 2 of the agreement during the 1876 negotiations, even though it had not obtained the signatures of two-thirds of the adult male population, which were necessary for this purpose. He confirmed a $15.5 million reward for the country`s market value in 1877, with 103 years of 5 percent interest for an additional $105 million. However, the Lakota-Sioux have refused to accept payments and instead continue to demand the return of the territory to the United States.  Until August 24, 2011 [Update], Sioux interest on the money increased to more than a billion dollars.  The 1877 Convention, also known as the Law of February 28, 1877 (19 Stat. 254), is the most controversial treatise on the land claims of the Black Hills. The contract officially removed Sioux land and established permanent Indian reserves. In 1863, the Dakota were forced to abandon all their remaining country in Minnesota and the U.S. government cancelled all contracts with them. The Ojibwe reluctantly abandoned most of their country remaining in northwestern Minnesota in contracts of 1863, 1864, and 1867.
In 1871, Congress put an end to the practice of entering into contracts with Indian nations. However, earlier treaties remained in force. Later this year, a group of Dakota leaders was brought to Washington, D.C after they were told they would negotiate the settlement of their southern border.