If some of these [Republican] folks were around when Columbus set sail, they must have been founding members of the 'flat earth society.' They would not believe that the world was round.

I believe that the free enterprise system is the greatest engine of prosperity the world's ever known.

Granting such immunity undermines the constitutional protections Americans trust the Congress to protect.

There are very few moments in our lives where we have the privilege to witness history taking place. This is one of those moments. This is one of those times.

Let's say I'm on the policy wonk end of the spectrum. As much as I can dive into a briefing book and really work to master various subjects that come before my desk, I'm still not an expert on a huge amount of the stuff that we work on.

What is true is [Bashar] Assad got rid of his chemical weapons.

Some may still deny the overwhelming judgment of science.