16 U.S.C. § 473 : US Code - Section 473: Revocation, modification, or vacation of orders or proclamations establishing national forests

      The President of the United States is authorized and empowered to
    revoke, modify, or suspend any and all Executive orders and
    proclamations or any part thereof issued under section 471 (!1) of
    this title, from time to time as he shall deem best for the public
    interests. By such modification he may reduce the area or change
    the boundary lines or may vacate altogether any order creating a
    national forest.