1. Short title This Act may be cited as the Prevent All Soring Tactics Act of 2017 or the PAST Act . 2. Increased enforcement under Horse Protection Act (a) Definitions Section 2 of the Horse Protection Act ( 15 U.S.C. 1821 ) is amended— (1) by redesignating paragraphs (1), (2), (3), and (4) as paragraphs (2), (3), (4), and (5), respectively; (2) by inserting before paragraph (2) (as so redesignated) the following new paragraph: (1) (A) The term action device means any boot, collar, chain, roller, or other device that encircles or is placed upon the lower extremity of the leg of a horse in such a manner that it can— (i) rotate around the leg or slide up and down the leg, so as to cause friction; or (ii) strike the hoof, coronet band, fetlock joint, or pastern of the horse. (B) Such term does not include soft rubber or soft leather bell boots or quarter boots that are used as protective devices. ; and (3) by adding at the end the following new paragraph: (6) (A) The term participate means engaging in any activity with respect to a horse show, horse exhibition, or horse sale or auction, including— (i) transporting or arranging for the transportation of a horse to or from a horse show, horse exhibition, or horse sale or auction; (ii) personally giving instructions to an exhibitor; or (iii) being knowingly present in a warm-up area, inspection area, or other area at a horse show, horse exhibition, or horse sale or auction that spectators are not permitted to enter. (B) Such term does not include spectating. . (b) Findings Section 3 of the Horse Protection Act ( 15 U.S.C. 1822 ) is amended— (1) in paragraph (3)— (A) by inserting and soring horses for such purposes after horses in intrastate commerce ; and (B) by inserting in many ways, including by creating unfair competition, by deceiving the spectating public and horse buyers, and by negatively impacting horse sales before the semicolon; (2) in paragraph (4), by striking and at the end