§ 698k. Contracts for providing visitor service...
Notwithstanding any other provision of law, before entering into any contract for the provision of revenue producing visitor services,
(Pub. L. 93–440, § 6, Oct. 11, 1974, 88 Stat. 1260; Pub. L. 100–301, § 3(d), Apr. 29, 1988, 102 Stat. 444.)