The U.S. Court of Appeals for the Ninth Circuit has ruled on Sept. 17 that a group of professional swimmers and the International Swimming League (ISL) can proceed with antitrust lawsuits against World Aquatics, the global governing body for swimming that controls national federations like USA Swimming. The lawsuits accuse World Aquatics of restricting the ability of swimmers to compete by orchestrating a de facto boycott of the ISL. This decision revives a class action from the ISL and competitive swimmers, including Tom Shields and Katinka Hosszu, who claim that the governing body is limiting competition within the sport.