7 U.S. Code § 206. Rates and charges generally; discrimination

All rates or charges made for any stockyard services furnished at a stockyard by a stockyard owner or market agency shall be just, reasonable, and nondiscriminatory, and any unjust, unreasonable, or discriminatory rate or charge is prohibited and declared to be unlawful: Provided, That rates and charges based upon percentages of the gross sales prices of livestock shall not be prohibited merely because they are based upon such percentages rather than on a per head basis.

(Aug. 15, 1921, ch. 64, title III, § 305, 42 Stat. 164; Pub. L. 95–409, § 1(a), Oct. 2, 1978, 92 Stat. 886.)
Amendments

1978—Pub. L. 95–409 inserted proviso that rates and charges based upon percentages of gross sales of livestock shall not be prohibited merely because based on such percentages rather than on a per head basis.