It's critical to have a sound foundation in free-market economics and the Constitution. A great many Republicans in Washington don't have that foundation.

The essence of the conservative message should be we want a dynamic nation where anybody with nothing can achieve anything.

I am perfectly happy to compromise whether it's with Democrats or anybody else, as long as we're reducing the size of government.

Donald Trump tweeted out to the world a quote allegedly from Senator Tom Coburn impugning my honesty. Within hours, Tom Coburn came out publicly and said, "That quote was an utter fabrication."

I don't know that I'm in a position to give campaign advice to Donald Trump, given that he just whipped me in a primary.

About 65 percent of Republicans believe that Donald Trump is not the best candidate to go head to head with Hillary Clinton.

The most enduring legacy of President Barack Obama is going to be a new generation of leaders standing up for liberty.