In the Supreme Court of the United States, United States, petitioner, v. Joshua James Cooley, respondent [electronic resource] : on writ of certiorari to the United States Court of Appeals for the Ninth Circuit : brief of the Lower Brule Sioux Tribe, the Flandreau Santee Sioux Tribe, and the Sisseton-Wahpeton Oyate of the Lake Traverse Reservation as amici curiae in support of petitioner / Pete Heidepriem, counsel of record [and 4 others], counsel for amici curiae.

At issue is whether a police officer for a Native American tribe may detain and search a non-tribe member within a reservation on suspicion of violating a federal or state law.