A prosecutor on the team that struck a sweetheart deal with Hunter Biden worked just years ago for a longtime Biden family friend who did business with the embattled first son, raising potential concerns about an investigation that has already been marred by whistleblower allegations of political favoritism. Derek Hines, a special assistant U.S. attorney on the Hunter Biden case, was special counsel to former FBI director Louis Freeh at Freeh's private consulting firm from August 2013 to February 2015, according to Hines's LinkedIn profile. Freeh has extensive ties to the Biden family. He was recruited by Hunter Biden in...