 The Justice Department is officially looking into a doping scandal involving nearly two dozen Chinese swimmers. Some of the athletes are scheduled to compete later this month at the Paris Olympics. NPR's Brian Mann has more. The Justice Department rarely comments on ongoing investigations, but two international sports organizations have confirmed to NPR that a criminal probe is underway. One focus appears to be on the World Anti-Doping Agency, known as WADA, and its handling of repeat positive drug tests by some elite Chinese swimmers.