(NEWSER) – When Darrell Issa called White House press secretary Jay Carney a "paid liar" on Sunday, House Republican leadership was aghast. They immediately called Issa's staffers, sources tell Politico, and their message was simple: Tell your boss to calm down. The staff agreed that the remark was out of line, but Issa himself has refused to publicly backtrack. "The White House has tried to vilify me rather than getting into the facts," he says. When asked about leadership's rumored gripes, he replied, "I didn't hear anything."