The purpose of this legislation is to ensure that a specific piece of land in South Dakota is officially recognized as being owned by the Oglala Sioux Tribe and the Cheyenne River Sioux Tribe under a special status known as "restricted fee status." This status is designed to protect the land from being sold or taxed and to maintain the tribes' authority over it. Key provisions of the legislation include a requirement for the Secretary of the Interior to take all necessary actions within one year of the law's enactment to finalize the legal status of the land.