I've only ever seen or heard the DOJ mentioned once and that was in Tom's interview. Maybe he WANTS the DOJ to get involved since he claims that the investigation might have been illegal.I'm otherwise too busy at the moment to find out myself but maybe someone more up to speed can tell me whether Brands is correct when he says the DOJ was involved, or whether this is Brands not understanding the difference between federal and state law enforcement.
My guess is the latter, of course, because my understanding of the case is that the investigation originates from the Iowa AG's office, and I can't imagine why/how the DOJ would/could impose itself here.