The Secretary of the Interior is authorized to administer as a part of the Glacier National Park, in the State of Montana, subject to all laws and regulations applicable thereto, the lands, or interests in lands, within the State of Montana, in township 28 north, range 20 west, Montana meridian, which may be acquired by the United States for the establishment by the National Park Service of a fish hatchery for restocking the waters of the said park.