The provisions of the preceding sections with respect to the termination of the Jurisdiction of the District Court for the Territory of Alaska, the continuation of suits, the succession of courts, and the satisfaction of rights of litigants in suits before such courts, shall not be effective until three years after the effective date of this Act, unless the President, by Executive order, shall sooner proclaim that the United States District Court for the District of Alaska, established in accordance with the provisions of this Act, is prepared to assume the functions imposed upon it. During such period of three years or until such Executive order is issued, the United States District Court for the Territory of Alaska shall continue to function as heretofore. The tenure of the judges, the United States attorneys, marshals, and other officers of the United States District Court for the Territory of Alaska shall terminate at such time as that court shall cease to function as provided in this section.