Paul Manafort, President Trump's former campaign manager, is suing the Department of Justice, Deputy Attorney General Rod Rosenstein, and special counsel Robert Mueller. The lawsuit claims Mueller was given an overly broad mandate and that the charges against him don't "relate to [his] activities during his brief stint" as campaign manager.

Why it matters: Manafort wants a judge to rule that Mueller can't bring charges on any matters unrelated to Russian election meddling, an outcome that could be of significant importance to other's in Trump's orbit.