 In August 1876, Congress enacted a bill cutting off appropriations "made for the subsistence" of the Sioux, unless they ceded the Black Hills to the United States.A commission headed by George Manypenny presented the Sioux with a new treaty and they signed, under threat of starvation.But only a few leaders signed, not the 3/4 majority of all Indian males on the reservation as required under the Fort Laramie Treaty.