Transcript for President-Elect Trump Picks Reince Priebus as His Chief of Staff
Tuesday's outcome. We begin tonight with Mary Bruce at the white house. Reporter: Tonight, Donald Trump's first major hire as president-elect. Picking reince Priebus, the chairman of the Republican party to be his chief of staff. It's an establishment choice for the anti-establishment candidate. You probably heard me say it. Drain the swamp. All: Drain the swamp. Drain the swamp. Reporter: Priebus stood by trump during the campaign, even when many within the party would not. I will tell you reince is really a star. And he is the hardest-working guy. Reporter: Republicans applauding the pick, and Priebus' relationships with those in the party. But a top trump ally is already warning that a Priebus pick could "Cause a rebellion" in trump's anti-establishment base. Working alongside Priebus will be Steve Bannon, the former head of conservative Breitbart news and a fierce critic of the GOP establishment. Trump today naming Bannon as his chief strategist and senior counselor. In a statement, trump saying, "Steve and reince are highly qualified leaders who worked well together on our campaign and led us to a historic victory. Now I will have them both with me in the white house as we work to make America great again." The decisions come after a flurry of activity at trump tower. Mr. Trump is up there making a lot of important decisions, taking accounts of many people. I think he can't go wrong with the decision. Reporter: Top advisers coming and going as the future government takes shape. Even top critic Michael Moore stopped by. They haven't stopped me yet. Reporter: Also buzzing today, trump's Twitter feed. The president-elect gloating about the congratulatory phone calls he's received. And going after the "New York Times." Even as he tells "60 minutes" he's going to dial back his Twitter habit. I'm going to do very restrained, if I use it at all, I'm going to do very restrained. I find it tremendous. It's a modern form of communication. There should be nothing you should be ashamed of. Reporter: With 68 days till inauguration, trump is racing to get his team in place. On the list of cabinet contenders, top supporters and politicians. And already there are signs trump is softening on key campaign pledges. We are not planning on erecting a deportation force. Donald Trump's not planning on that. Reporter: Now, trump says he'll focus on criminal undocumented immigrants. Probably two million, it could even be three million. We are getting them out of our country or we're going to incarcerate. Reporter: What about the millions of other undocumented immigrants? After the border is secure and after everything gets normalized, we're going to make a determination on the people that you're talking about, who are terrific people. They're terrific people. We're going to build a wall. All: Build a wall, build a wall. Reporter: Now trump says part of that famous wall could be a fence. Would you accept a fence? For certain areas I would. But for certain areas a wall is more appropriate. I'm very good at this, it's called construction. And Mary joins us live. We're hearing from Hillary Clinton, speaking out about what she thinks may have contributed to her big loss? Reporter: Clinton has told her supporters she's heartbroken, and placing come of the blame on James Comey. Killing some of her campaign's momentum, and giving trump supporters motivation. Tom? Mary, thank you.
This transcript has been automatically generated and may not be 100% accurate.