Four central figures in the FBI’s criminal investigation of Hillary Clinton’s email practices are all using the same lawyer, a move described as a “red flag” by a former U.S. attorney who now runs a government watchdog group. Lawyer Beth Wilkinson is representing: Clinton former chief of staff Cheryl Mills; policy adviser Jake Sullivan; media gatekeeper Philippe Reines; and former aide Heather Samuelson, who helped decide which Clinton emails were destroyed before turning over the remaining 30,000 records to the State Department. "I think it would be a real red flag," Matthew Whitaker, executive director of the Foundation for Accountability...