Robert Mueller speaks about an investigation into the use of so-called national security letters to collect data, at a news conference at the bureau’s headquarters. (Photographer: Dennis Brack/Bloomberg News)

Mueller Gets ‘Firewall’ for U.S.-Secrets Review in a Russia Case

(Bloomberg) -- The U.S. judge overseeing Special Counsel Robert Mueller’s criminal case against Russians accused of interfering in the 2016 election agreed to appoint an independent lawyer to revie...