Here is the opinion in Lawyer v. State.
An excerpt:
In his application, Lawyer alleged that his counsel was ineffective for failing to file a motion to change venue. Specifically, he asserted the crime he was convicted of occurred on the Nez Perce Indian Reservation, that he is a member of the Nez Perce Tribe, and the State lacked jurisdiction to prosecute him. On appeal, he appears to renew this argument, stating that his trial and appellate counsel were “not aware and sensitive to Tribal Court Jurisdiction.” Pursuant to I.C. § 67-5101, the State of Idaho has jurisdiction for the criminal enforcement of state laws concerning various matters arising in Indian country, including “[o]peration and management of motor vehicles upon highways and roads maintained by the county or state.” Idaho courts have previously held that “the State of Idaho has authority to enforce the motor vehicle laws of this state in Indian Country pursuant to the consent provided in Public Law 280 and as implemented by the Idaho Legislature in I.C. § 67-5101.” State v. Beasley, 146 Idaho 594, 597, 199 P.3d 771, 774 (Ct. App. 2008). It is undisputed that Lawyer was stopped and arrested while driving on State Highway 12 on the Nez Perce Indian Reservation. Therefore, Lawyer was driving on a state highway, over which the State of Idaho has expressly assumed jurisdiction.
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