DAVOS, Switzerland — The evening before the skate sprint in Davos – Andy Newell’s last World Cup competition of 2016 – the U.S. Ski Team veteran stood in the dark outside the temporary trailer his team was using as a wax cabin and talked about doping. In particular, he talked about systematic doping in Russia and has maintained his innocence since , in her extensive investigation of retroactively-awarded Olympic medals, called this “the butterfly effect...