his purview to look into the or i havorigins of the steele dossr and the origins of the fbi counter intelligence investigation. the steele dossier was supposedly rooted in russian intelligence, russian information. wouldn't that seem to be central to a probe about russian meddling? >> absolutely. and he had an obligation in my mind to answer those questions republicans put to him, basically saying, look, how is it conceivable that given that your mandate was to investigate russian interference in our election that you did not look at the central document that, again, supposedly was sourced in large part from senior russian officials, that's according to christopher steele, and decide whether or not itself was dis information and mueller wouldn't answer those questions. he walled them off from the opening statement he gave. i think he knows that to have gone there would have required him to admit that the dossier