16 U.S.C. § 685

When such areas have been designated in the Wichita National Forest as provided for in section 684 of this title , hunting, trapping, killing, or capturing of game animals and birds upon the lands of the United States within the limits of said areas shall be unlawful, except under such regulations as may be prescribed from time to time, by the Secretary of the Interior. When such areas have been designated in the Grand Canyon National Forest as provided in section 684 of this title , hunting, trapping, killing, or capturing of game animals upon the lands of the United States within the limits of said areas shall be unlawful, except under such regulations as may be prescribed from time to time by the Secretary of Agriculture.