"I personally think it was valuable. I think maybe it causes the American people to take pause and say, wait a minute, if we have someone who is as selfless and as committed as Jim Mattis resigns his position, walking away from all the responsibility he feels for every service member in our forces, and he does so in a public way like that, we ought to stop and say, OK, why did he do it? We ought to ask what kind of commander in chief he had, that Jim Mattis [had], that, you know, the good Marine, felt he had to walk away."