This is the Trump Justice Department of course, but it's Robert Mueller who's making these calls under the auspices of his independent counsel investigation of the Russia thing, as if there was a thing.
This is one of the reasons you don't appoint independent counsels. They take their independence to mean they don't have to answer any questions or submit to any accountability over the nature of their investigations. They can expand the scope as much as they like, whenever they like. They can impanel a grand jury to indict a ham sandwich if they want.
