16 USC § 6808
Reports
through Pub. L. 116-344, except Pub. Ls. 116-260 and 116-283
Not later than May 1, 2006, and every 3 years thereafter, the Secretary shall submit to Congress a report detailing the status of the recreation fee program conducted for Federal recreational lands and waters, including an evaluation of the recreation fee program, examples of projects that were funded using such fees, and future projects and programs for funding with fees, and containing any recommendations for changes in the overall fee system.