Michael Schneider Variety Editor at LargeA decade after Fox canceled “America’s Most Wanted,” the network is reviving the series — with new host Elizabeth Vargas.The new “America’s Most Wanted” will premiere this March on Fox, the network announced on Friday. The format will be the same: “Vargas will ask for viewers’ help as she breaks down cases from the show’s new headquarters, consulting with a team of experts representing law enforcement units such as the FBI, U.S.