51 U.S.C. § 50920Section
§ 50920. User fees
The Secretary of Transportation may collect a user fee for a regulatory or other service conducted under this chapter only if specifically authorized by this chapter.
(Pub. L. 103–272, §1(e), July 5, 1994, 108 Stat. 1342, §70118 of title 49; renumbered §70118 then §50920 of title 51, Pub. L. 111–314, §4(d)(2), (3)(T), Dec. 18, 2010, 124 Stat. 3440, 3441.)