it starts and stops. i think it might be productive. >> jeff toobin, does it seem like it's going to be productive in that way? >> well, it certainly will help get to the bottom of the story if he is telling the truth because he is such a central figure in all of this. there is really only one kind of immunity. it's technically called limited use immunity. but as we have been discussing, it is under that both the justice department and the congress can grant it. and the problem is, can be when they don't agree about who deserves it. >> yes. >> jen psaki, how do you see this as former white house communications director? >> well, i think he is one significant player in this entire unraveling russia connections onion here. and we don't really know how big the story is. but clearly, given the language in the letter from his lars and obviously jeffrey toobin and other lawyers can speak to that.