White House Chief of Staff Reince Priebus joins "CBS This Morning" to discuss how the office may have changed President Trump, North Korea, and about the prospects for healthcare and tax reform bills. GAYLE KING: And thinking about decision making, you know, there's a lot of very intense conversation going on around North Korea. Can you imagine a scenario where President Trump and Kim Jong-un sit face to face and have a conversation? REINCE PRIEBUS: Not right now– GAYLE KING: Can you see that? REINCE PRIEBUS: –I can't. But– not right now I don't. You know, I would– unless the person was willing to disarm and give up what he's put in mountainsides across his country and give up his drive for nuclear capability and ICBMs. But, you know, so the question — I think the answer's probably not. And I don't see that happening. But it– we're going to need a lot of cooperation among the region and– and our leaders around the world in order to get this person under control.