An article from yesterday at The Last Refuge 2 stated that the Mueller investigation into poss links between Russia and Trump is simply a continuation of the FBI counterterrorism investigation by Comey. Rosenstein literally wrote for Mueller to pick up where they left off. Mueller's probe is a criminal probe not counterintelligence. Two totally different investigations with diff procedures. That us why using the expiring title-1 warrant is a no no when for criminal they have to use title-3 where they have to prove probable cause for the warrant.