to use all the tools at your disposal. sometimes that is a fear factor which is what is being suggested here for mueller. i think what he is doing seems to be completely in the bounds of what is ordinary and proper investigative techniques. he is pursuing the right people wherever he finds the lead, he's going. he is following it where it is taking him in figuring out the truth. some of this we read, manafort's fizy warrant goes back before the campaign and had to do with his representation of ukrainians. it had nothing to do with the campaign. it just then expanded as we got into more and more. i think that's something that can always happen. once you start looking, you don't know where it will lead and you have to follow the leads everywhere they take you. that's what mueller is doing which is quite proper. >> you point to what is a big question. if there was a previous fisa warrant that led to the wire