I believe we must study which changes must be made now that the immigration system has changed, because we are seeing, I believe, that at this time we are inviting people to come to the U.S. on very dangerous trips.

We will have to work around the world with less than ideal governments. The government in Saudi Arabia is not a democracy, but we will have to work with them. The government in Jordan is not perfect, but we will have to work with them. But anti-American dictators like [Bashar] Assad, who help Hezbollah, who helped get those IEDs into Iraq, if they go, I will not shed a tear.

All of these things we're talking about now, it will take time to sink in. But when voters begin to realize what we're really up against here, and what he's trying to do, I think you're going to see a sea shift here pretty quickly.

I intend to do all I can to both keep America safe, and keep America special.

I do not believe that human activity is causing these dramatic changes to our climate the way these scientists are portraying it... And I do not believe that the laws that they propose we pass will do anything about it - except, they will destroy our economy.

I have been an underdog my whole life, both in life and in politics. We're going to do well. We're going to pick up a lot of delegates on Super Tuesday.

Mitt Romney understands free enterprise, he has worked in it. He has seen companies succeed and he has seen them fail, too. He knows what people think about when they invest their money.