Stephen Bannon was asked by Ari Melber on MSNBC about the infamous Trump Tower meeting with a Russian agent: MELBER: If a candidate knows about that in advance, then are they a part of treasonous behavior by your standard? BANNON: I think you have to call into question. If somebody is actually out there trying to get information from foreign parties, you have to question it, yeah. MELBER: So if Mueller could prove that about Donald Trump, that would concern you. BANNON: It would definitely concern me, yes.