I think President Obama is the most radical president this nation's ever seen. And in particular, I think he is a true believer in government control of the economy and of our everyday lives. In my judgment, we are facing what I consider to be the epic battle of our generation, quite literally the battle over whether we remain a free market nation.

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.

I have never supported amnesty, and I led the fight against Chuck Schumer's gang of eight amnesty legislation in the Senate.

I've spent my whole life fighting for free-market principles and the Constitution. That's not going to change.

To earn the support of grass-roots activists, you have to spend real time, looking them in the eyes, answering their questions. Part of it is also you have to have a message that inspires people.

It's really remarkable to see two candidates,[Donald] Trump and [Marco] Rubio, making things up and putting things out for which there is no evidence and no basis.

In my view, republican primary debates ought to be moderated by people who would vote in a primary.