The provisions of the Act of August 1, 1916 (39 Stat. 432), entitled “An Act to establish a national park in the Territory of Hawaii”; the Act of August 25, 1916 (39 Stat. 535), entitled “An Act to establish a National Park Service, and for other purposes”; ¹ the Act of February 27, 1920 (41 Stat. 452), entitled “An Act to authorize the Governor of the Territory of Hawaii to acquire privately owned lands and rights-of-way within the boundaries of the Hawaii National Park”; and all Acts supplementary to and amendatory of said Acts are made applicable to and extended over the lands hereby added to the park: Provided, That the provisions of the Federal Power Act [16 U.S.C. 791a et seq.] shall not apply to or extend over such lands.