Mueller insider reveals why he might not want to testify

04:41

New reporting suggests Bob Mueller might limit any testimony that goes beyond the Mueller report to “be conducted in private” and that it is Trump’s DOJ, not Mueller, that is “resisting a televised hearing.” Former federal prosecutor Glenn Kirschner, who worked for Mueller in the D.C. U.S. Attorney’s office tells MSNBC Chief Legal Correspondent, Ari Melber, Mueller might “take the principled position” against testifying, because the Mueller report could not be “any more transparent or frankly more powerful.”