The park shall be administered by the Secretary in accordance with this subchapter and with laws generally applicable to units of the National Park System, including the Act of August 25, 1916 (39 Stat. 535; 16 U.S.C. 1 et seq.) 1

Not later than 3 years after funds are made available for this purpose, the Secretary shall prepare an amendment to the General Management Plan for Fort Clatsop National Memorial to guide the management of the park.

In order to facilitate the presentation of a comprehensive picture of the Lewis and Clark Expedition’s experiences in the lower Columbia River area and to promote more efficient administration of the sites associated with those experiences, the Secretary may enter into cooperative management agreements with appropriate officials in the States of Washington and Oregon in accordance with the authority provided under section 101703 of title 54.