Here is what is going on.
Comey made sure that the regime/DOJ would not get the hard to find evidence that his agents had come by. We already know they won't porsecute so why give them the evidence. That's one reason why he did what he did.
Also the NYPD is capable whether they will do it or not of locking up these criminals from hillary to huma to carlos danger to who knows. They have grand jurys already in place empanneled and there is nothing stopping them from throwing these bumsinto the slammer. Also comey made sure that congress got all 650k emails so its not what it seems