The Secretary is authorized to acquire by donation, purchase with donated or appropriated funds, transfer from any Federal agency, exchange, or otherwise, the lands and interests in lands described in section 273 of this title, except that lands or interests therein owned by the State of Utah, or any political subdivision thereof, may be acquired only with the approval of such State or political subdivision.

Where any Federal lands included within the park are legally occupied or utilized on December 18, 1971, for grazing purposes, pursuant to a lease, permit, or license for a fixed term of years issued or authorized by any department, establishment, or agency of the United States, the Secretary of the Interior shall permit the persons holding such grazing privileges or their heirs to continue in the exercise thereof during the term of the lease, permit, or license, and one period of renewal thereafter.

Nothing in this subchapter shall be construed as affecting in any way rights of owners and operators of cattle and sheep herds, existing on the date immediately prior to December 18, 1971, to trail their herds on traditional courses used by them prior to December 18, 1971, and to water their stock, notwithstanding the fact that the lands involving such trails and watering are situated within the park: Provided, That the Secretary may promulgate reasonable regulations providing for the use of such driveways.

There are hereby authorized to be appropriated such sums as may be necessary to carry out the purposes of this subchapter, not to exceed, however, $2,173,000 for the acquisition of lands and interests in lands and not to exceed $1,373,000 for development. The sums authorized in this section shall be available for acquisition and development undertaken subsequent to December 18, 1971.