The suit alleges that Mueller has strayed beyond the scope of the investigation he was authorized to pursue, and argues that the charges filed against Manafort have nothing to do with the 2016 presidential election that spurred Mueller's appointment.
"The actions of DOJ and Mr. Rosenstein in issuing the Appointment Order, and Mr. Mueller's actions pursuant to the authority the Order granted him, were arbitrary, capricious, and not in accordance with the law," the suit reads.