For months now, the Department of Justice (DOJ) quietly has been working on a revision to its guidelines governing how, when and why prosecutors can obtain the records of journalists, particularly in leak cases. The work has been supervised by Deputy Attorney General Rod Rosenstein’s office, especially since former Attorney General Jeff Sessions departed, but is not wrapped up. ADVERTISEMENT The effort has the potential to touch off a First Amendment debate with a press corps that already has high degrees of distrust of and disfunction with the Trump administration. Acting Attorney General Matt Whitaker is aware of the effort...