To have this exact kind of story written about them

Even if they could get in with little effort for them to be able to use the evidence in court it would have to be legally obtained. This isn’t intelligence gathering on a foreign adversary. Trump and his lawyers are going to try every maneuver in the book to get him out of seeing any consequences for his actions, the FBI need to do everything with this case by the book or risk everything getting thrown out on technicalities.