 to rid their sports of cheaters ahead of next month's summer games in Paris. The testimony by Michael Phelps and Alison Schmidt followed revelations this spring. Twenty-three Chinese swimmers had tested positive for a banned heart medication ahead of the Tokyo Games, but were allowed by WADA officials to compete after they accepted the explanation that the banned substance was incontaminated food and not taken to enhance performance. Five of those swimmers went on to win medals, including three golds, and 11 of the Chinese who tested positive ahead of Tokyo are set to compete again in Paris.