David Gregory: “Any president has to respect the institution to know that this kind of intrusion is something that could very much come…”

I think any time as an advisor in the White House, if you get too big, bigger than the principal, bigger than the president, you get into trouble.

I think he's lost a lot of credibility among his colleagues on Capitol Hill, to say nothing of the distraction that he's creating for the administration.

He's called them vermin before. He's talked about an infestation before. These are the kinds of phraseology that was used against Jews, by the way, in Nazi Germany and elsewhere in Europe, so it's dehumanizing.

People died because of this crap that's out there all over the world and they can hurt Americans.