Donald Trump is saying we're going to end the lawlessness at the border and we're going to push Mexico to do better. So there's been a reaction by the activist community to attack him.

In seven years, we'll have the highest percentage of Americans non-native born since the founding of the republic. And some people think, "Well, we've always had these numbers." But it's not so. This is very unusual. It's a radical change. And in fact, when the numbers reached about this high in 1924, the president and Congress changed the policy, and it slowed down immigration significantly. And we then assimilated through the 1965 and created really the solid middle class of America, with assimilated immigrants, and it was good for America.

I think Donald Trump is moving to - and will continue to move to the economic argument, as to why what he's doing is - represents a commitment to stand up to big business, to international corporations who favor more immigration and lower wages - that's what they favor - and a defense of the interest of the American people who go to work every day.

The Republican Party, in many ways, grew up as a reaction to that [ segregation], and a lot of people have misunderstood that.

There's a lot of overconfidence about this bill. We're going to expose it. It will not pass.

They [Democratic Party ] did not do what they promised to do. And we're not going to end trade - that's very important to state - but we're going to have to be more careful about it, and we have to recognize, as politicians, we don't represent some international company.

We need more American energy. It keeps wealth at home. It keeps our wealth from ending up in Venezuela and Saudi Arabia. It creates jobs at home.