48 U.S.C. § 1424: Jurisdiction and powers of local courts

have original jurisdiction over proceedings necessary to protect its appellate jurisdiction and supervisory authority and such other original jurisdiction as the laws of Guam may provide; have jurisdiction to hear appeals over any cause in Guam decided by the Superior Court of Guam or other courts established under the laws of Guam; have jurisdiction to issue all orders and writs in aid of its appellate, supervisory, and original jurisdiction, including those orders necessary for the supervision of the judicial branch of Guam; have supervisory jurisdiction over the Superior Court of Guam and all other courts of the judicial branch of Guam; hear and determine appeals by a panel of three of the justices of the Supreme Court of Guam and a concurrence of two such justices shall be necessary to a decision of the Supreme Court of Guam on the merits of an appeal; make and promulgate rules governing the administration of the judiciary and the practice and procedure in the courts of the judicial branch of Guam, including procedures for the determination of an appeal en banc; and govern attorney and judicial ethics and the practice of law in Guam, including admission to practice law and the conduct and discipline of persons admitted to practice law. shall preside over the Supreme Court unless disqualified or unable to act; shall be the administrative head of, and have general supervisory power over, all departments, divisions, and other instrumentalities of the judicial branch of Guam; and may issue such administrative orders on behalf of the Supreme Court of Guam as necessary for the efficient administration of the judicial branch of Guam. an appeal prior to the hearing and determination of that appeal on the merits; or dismissal of an appeal for lack of jurisdiction or failure to take or prosecute the appeal in accordance with applicable laws or rules of procedure. Except as granted to the Supreme Court of Guam or otherwise provided by this chapter or any other Act of Congress, the Superior Court of Guam and all other local courts established by the laws of Guam shall have such original and appellate jurisdiction over all causes in Guam as the laws of Guam provide, except that such jurisdiction shall be subject to the exclusive or concurrent jurisdiction conferred on the District Court of Guam under section 1424 of this title . The qualifications and duties of the justices and judges of the Supreme Court of Guam, the Superior Court of Guam, and all other local courts established by the laws of Guam shall be governed by the laws of Guam and the rules of such courts.