While the WADA Code has been accepted by numerous sport organizations, leagues, and federations around the world, the overwhelming majority of U.S. professional sport leagues (NFL, MLB, NHL, NBA); state athletic federations (boxing); as well as the National Collegiate Athletic Association (NCAA) are not signatories to the WADA Code and are often criticized for having less-effective anti-doping programs in comparison to the Olympic, Paralympic and Pan-American movements, as well as those professional sport programs in other countries that have become signatories of the WADA Code.