Utah Code § 9-9-207

(1) The state of Utah hereby obligates and binds itself to retrocede all or any measure of the criminal or civil jurisdiction acquired by it pursuant to this chapter whenever the governor receives a resolution from a majority of any tribe, tribal council, or other governing body duly recognized by the Bureau of Indian Affairs of any Indian tribe, community, band or group in this state, certifying the results of a special election and expressly requesting the state to retrocede jurisdiction over its people or lands or any portion thereof within the limits authorized by the Act of Congress of April 11, 1968, 82 Stat., 78-80 (Public Law 284, 90th Congress). (2) The governor shall issue within 60 days a proclamation to the effect that jurisdiction has been retroceded for all these Indians and all Indian territory, country, lands or any portion thereof.