Deputy Attorney General Rod Rosenstein has named a new acting deputy of his own. The Department of Justice on Tuesday announced Edward O'Callaghan will be the acting principal associate deputy attorney general. O'Callaghan will replace Robert Hur, who is taking Rosenstein's old job as the U.S. Attorney in the District of Maryland. O'Callaghan's new position is key, as it will involve oversight of the FBI's probe of Russian election meddling and any ties to the Trump campaign. O'Callaghan has been serving as the principal deputy assistant attorney general for the DOJ's National Security Division. "Edward O'Callaghan has served the Department...