been observed leaving the show grounds when they find that the more stringent federal inspection teams are present. Although illegal under federal law for more than 40 years, soring is still practiced; criminal charges have been filed against people who violate the Act. Enforcement of the HPA is difficult, due to limited inspection budgets and problems with lax enforcement by inspectors who are hired by the shows they were to police. As a result, while in 1999 there were eight certified HIOs, by 2010, only three organizations remained certified as HIOs, all known to be actively working to end soring. In 2013, legislation to amend and strengthen the HPA was introduced in Congress. The President and executive committee of the TWHBEA voted to support this legislation, but the full board of directors chose not to. The bi-partisan bill, H.R. 1518, was sponsored by Representative Ed Whitfield (R-KY), and Representative Steve Cohen (D-TN), with 216 co-sponsors. On November 13, 2013 a hearing was held. Supporters included the American Horse Council, the American Veterinary Medical Association, members of the TWHBEA, the International Walking Horse Association, and Friends of Sound Horses. Opponents included members of the Performance Horse Show Association, and the Tennessee Commissioner of Agriculture. The legislation did not pass in the 113th Congress and was reintroduced in 2015 for the 114th Congress. In 2016, the USDA proposed new rules independent of the PAST Act, banning stacks and chains, and providing stricter inspections at training barns, auctions, and shows. Show rules and organizations Controversies over shoeing rules, concerns about soring, and the breed industry's compliance with the Horse Protection Act has resulted in the development of multiple governing organizations. The breed registry is kept by the TWHBEA, which promotes all riding disciplines within the breed, but does not sanction horse shows. The USEF does not currently recognize or sanction any Tennessee Walking Horse shows. In 2013 it banned the use of action devices and stacks at any time in any class. The Tennessee Walking Horse Heritage Society is a group dedicated to the preservation of the original Tennessee Walker bloodlines, mainly for use as trail and pleasure horses, rather than for showing. Horses listed by the organization descend from the foundation bloodstock registered by the TWHBEA. Pedigrees may not include horses that have been shown with stacks post-1976. Two organizations have formed to promote the exhibition of flat-shod horses. The National Walking