I also believe that if we're serious about change, we need to have a real discussion about public financing for congressional elections.

As we keep up the pressure, our air campaign will continue to hit ISIL harder than ever.

Without regard to whether some place is wealthy or poor, everybody should have the chance at clean air and clean water.

I think that we've had an economy that's been out of balance for too long. So the general principle of raising taxes on higher income Americans, like myself, and providing relief to those who haven't benefited as much from this new global economy, I think is a sound one.

I look at some of the kids that I interact with, and they were born with so many disadvantages. And you could start off in your first interaction with them saying, "Unless they get a lot of compensatory help, they're not going to be able to compete; they're just so far behind, and they're wounded and they're hurt."

I came in with a healthy skepticism about these programs. My team evaluated them. We scrubbed them thoroughly. We actually expanded some of the oversight, increased some of the safeguards. But my assessment, and my team's assessment was that they help us prevent terrorist attacks. In the abstract, you can complain about 'Big Brother' and how this is a potential program run amok. But when you actually look at the details, then, I think we've struck the right balance.

There's some bittersweet feelings about leaving the people here [in the White House]. 'Cause even though all the team you assemble, you know, you're going to stay in touch with 'em, it's not the same, you know? The band kind of breaks up.