That the said United States of America is hereby empowered to pass such laws, and to make or provide for the making of such rules, of both a civil and criminal nature, and provide punishment for the violation thereof, as in its judgment may be necessary for the management, control, and protection of such lands acquired from time to time by the United States of America under the provisions of this act: Provided, however, That the authority hereby given shall be subject to all the conditions and stipulations and reservations contained in this act.