NPR °µºÚ±¬ÁÏ Libby Pleads Not Guilty in CIA Leak Case By Laura Sullivan Published November 2, 2005 at 10:00 PM MST Email Listen • 0:00 The former chief of staff to Vice President Dick Cheney, I. Lewis Libby, arrives at federal court in Washington, D.C., Nov. 3. Copyright 2005