Armstrong stripped of his seven Tour de France titles by cycling 's ruling body . American accused of systematic drug use by United States Anti-Doping Agency . seven of the American 's former teammates testified against him in USADA report . the Livestrong Foundation has stepped down as chairman of Tour de France .
Lance Armstrong stripped of his seven Tour de France titles by cycling 's ruling body . American accused of systematic drug use by United States Anti-Doping Agency . Eleven of the Texan 's former teammates testified against him in USADA report . Armstrong has stepped down as chairman of the Livestrong Foundation .