U.S. Attorney John Durham has already used a grand jury in Connecticut, attorney Joe diGenova said on Tuesday. It was revealed this week that Attorney General William Barr tasked Durham with examining the origins of the federal Russia investigation. In a Fox News interview, diGenova said Durham, who is a U.S. attorney in Connecticut, has been working for a couple of months. "Durham has already used a grand jury in Connecticut, they've already gotten documents, he's already talked to the intel people," he said.