Paul Manafort is in trouble. Reports now say the President's former campaign chairman was under an FBI wiretap before and after the election — surveillance Mr. Manafort claims was politically motivated. Now an indictment is in the works. So who exactly is Paul Manafort? And why does this controversy matter? We ask Jason Maloni, a spokesman for Paul Manafort, Mark Mazzetti, Washington investigations editor for The New York Times, Susan Hennessey, a former National Security Administration attorney, Jan Baran, head of the election law group at Wiley Rein LLP and Asha Rangappa, associate dean at Yale Law School and a former FBI agent.