Sitting Bull did not agree to the treaty. He told the Jesuit missionary, Pierre Jean De Smet, who sought him out on behalf of the government: "I wish all to know that I do not propose to sell any part of my country." He continued his hit-and-run attacks on forts in the upper Missouri area throughout the late 1860s and early 1870s. The events of 1866–1868 mark a historically debated period of Sitting Bull's life. According to historian Stanley Vestal, who conducted interviews with surviving Hunkpapa in 1930, Sitting Bull was made "Supreme Chief of the whole Sioux Nation" at this time.
Coquille Indian Tribe a fraction of its former size. The remnants of the original Coastal Indian Reservation are contained in the Siletz Reservation and associated tribally owned lands. Over the years many Coquilles returned to their traditional homeland and fought for acknowledgement of the Treaty of 1855. The U.S. federal government terminated its recognition of the Coquille as part of the Western Oregon Indian Termination Act. In 1989 the tribe regained its federal recognition. With restoration came tribal sovereignty, which gives the tribe authority to form its own government and have jurisdiction over tribal lands, businesses, and community members. The Confederated Tribes of