train to the senate judiciary committee opened an investigation into loretto lynch. lawmakers looking into whether lynch interfered in the investigation into hillary clinton's e-mail@secretary of state. rob cosco, former fbi director. thank you for joining us. what questions does far need to be answered by former attorney general lynch? how germane if ms. lynch's testimony and what resolution might provide? >> my hope is that provides a resolution greater than just the conversation about calling the clinton administration a matter appeared early on in the investigation, and there were references to the fda that committee being a security review. the arnett reports and we don't know what is true, but e-mails