I've heard of many tragic cases of walking, talking normal children who wound up with profound mental disorders after vaccines.

When I asked the president [Barack Obama], can you kill an American on American soil, it should have been an easy answer. It's an easy question. It should have been a resounding and unequivocal no. The president's response, he hasn't killed anyone yet.

40 percent of people who come to visit America on a visa overstay their visa and we have no idea where they are. On 9/11, at least 2 of the hijackers were here on visa. They were traveling back and forth to the Middle East. And we really had no idea where they were or what they were doing. And they were overstaying their visa. So there are problems I think in the immigration system that need to be fixed for our safety.

The great and abiding lesson of American history, particularly the Cold War, is that the engine of capitalism - the individual - is mightier than any collective.

Toppling secular dictators in the Middle East has only led to chaos and the rise of radical Islam.

We must always embrace individual liberty and enforce the constitutional rights of all Americans-rich and poor, immigrant and native, black and white.

Foreign aid is not something the vast majority of Americans support, but definitely not conservatives.