The DOJ and FBI are obviously guilty of crimes against the US during a time of war. You clean your own house out first, then you can go after then others. The first trials aren't against people with household names, they are operators within the agencies that have committed treason. They each turned on each other imo.
They may have already cleaned up a lot of the bad actors, we simply don't know. What we do see is how quickly the Federal judges are changing and those require Congress. I've never seen Congress work so quickly, but always knew they could if they wanted.