We don't have a system that knocks on doors of every person in America.

Remember the lessons of history - if we don't learn from history, we're bound to repeat it.

What I put forward was an amendment that would have temporarily halted immigration from high-risk terrorist countries, but would have started it up, but I wanted them to go through Global Entry, which is a program where we do background checks.

There is no doubt that if Donald [Trump] steamrolls through Super Tuesday, wins everywhere with big margins, that he may well be unstoppable. I don't think that will happen.

Every day, I come home with a spring in my step. We've got to work together to stop the Obama agenda and take this country back.

I am not in the habit of supporting people who attack my wife and attack my father. That was not a blanket commitment that if you go and slander and attack Heidi that I'm going to nonetheless come like a servile puppy dog and say thank you very much for maligning my wife and maligning my father.

I think what Republicans want is someone who will stand up and lead, who will take on the great challenges of the day, who will make the case that the path we're on isn't working; that the Obama-economy is a disaster, that Obamacare is a trainwreck, that our constitutional rights are under assault and that we need to restore America's leadership in the world.