Since the Treaty of 1868, public safety on the Navajo Nation was the responsibility of the U.S. Federal government, but administered by the branch of Law & Order. Several years later ~1872~ the first Navajo police force was organized. Although they proved to be effective, the force was dissolved three years later. In 1959, the Navajo Tribal Council re-established a tribal police agency under the supervision of the superintendent of police, who was responsible to the Director of the Office of Tribal Administration.