1. Short title This Act may be cited as the Muhammad Ali Expansion Act . 2. Inclusion of mixed martial arts fighters (a) Definitions Section 2 of the Professional Boxing Safety Act of 1996 ( 15 U.S.C. 6301 ) is amended— (1) by redesignating paragraphs (4) through (15) as paragraphs (5), (6), (7), (9), (10), (11), (12), (13), (14), (15), (16), and (17), respectively; (2) by inserting after paragraph (3) the following: (4) Fighter The term fighter means an individual who fights in a professional mixed martial arts competition or other professional combat sport competition. ; (3) by inserting after paragraph (7), as so redesignated, the following: (8) Combat sport competition The term combat sport competition means a professional fight that allows fighters to use one or more forms of martial arts, including mixed martial arts. Such term does not include— (A) a combat sport that allows the use of a weapon or foreign object; or (B) a competition that is regulated by an amateur sports organization. ; and (4) by adding at the end the following: (18) Mixed martial arts The term mixed martial arts means a full-contact combat sport that allows fighters to use both striking and grappling techniques, and both standing and on the ground, from a variety of other combat sports and martial arts. . (b) Conforming amendments (1) Sections 3 through 21 (other than section 20) of the Professional Boxing Safety Act of 1996 ( 15 U.S.C. 6301 et seq. ) are amended— (A) by inserting or fighter after boxer each place it appears; (B) by inserting and fighters after boxers each place it appears; (C) by inserting or combat sport competition after boxing match each place it appears; (D) by inserting and combat sport competitions after boxing matches each place it appears; (E) by inserting or competition after the match each place it appears