<p>A new focus emerged Tuesday in the sprawling litigation over Hillary Clinton’s use of a private email server: the State Department official who may have authorized the private set-up Clinton used for most of her four years as secretary of state.</p><p>A conservative watchdog group pressed a federal judge to order Undersecretary for Management Patrick Kennedy to appear in court to explain who green-lighted Clinton’s private server and who kept it running.</p><p>“He would be able to easily answer…..did she have the authorization to use Clintonemail.com?” Judicial Watch Attorney Michael Bekesha told U.S.