Sign up for the Slatest to get the most insightful analysis, criticism, and advice out there, delivered to your inbox daily. The chief of staff for Rep. Mike Collins, the front-runner to be Republicans’ Senate nominee in Georgia, said he used his congressional position to attempt to free a Holocaust denier from prison. Kip Talley, Collins’ current chief of staff, detailed his efforts in a group chat that included prominent white nationalists, among them Nick Fuentes and Richard Spencer. Slate has reviewed the chats. Talley actively intervened on behalf of Charles Johnson—a notorious internet troll, Holocaust denier, and racist—while Johnson...