Involvement in Afghanistan, I thought, was totally warranted. We were attacked, we attacked back, but after six months of being in Afghanistan, I thought we had pretty well effectively wiped out al Qaeda.

There's an unintended consequence when it comes to drone attacks in Yemen. Yeah, you take out the al-Qaida stronghold, but you also wipe out the other half of the block. That makes Yemenis against the United States for the rest of their lives and all their descendants.

I just think everything we do has an unintended consequence. We take out Saddam Hussein in Iraq, and Iraq was the check against Iran.

All I suggest is to make K-12 like higher education. Higher education in the United States is the best in the world because these institutions compete with each other for your tuition dollar. Let's just bring competition to public education.

We're on the verge of a financial collapse unless we balance the budget, and that means some really, really tough decisions.