The United States Horse Protection Act of 1970 (P.L. 91-540, as amended (15 U.S.C. §1821 et seq.)) makes it a crime to exhibit, or transport for the purpose of exhibiting, any sored horse (one whose feet have been injured deliberately to accentuate the animal’s gait). The Animal and Plant Health Inspection Service (APHIS) enforces the law, which covers all breeds, although Tennessee Walking Horses are the most frequent victims of this procedure.