Since taking office, I've made it clear that the United States was prepared to begin a new chapter of engagement with the Islamic Republic of Iran. We offered the Iranian government a clear choice. It could fulfill its international obligations and realize greater security, deeper economic and political integration with the world, and a better future for all Iranians. Or it could continue to flout its responsibilities and face even more pressure and isolation.

Now is not the time to gut these job-creating investments in science and innovation. Now is the time to reach a level of research and development not seen since the height of the Space Race.

If everybody voted, then it would completely change the political map in this country.

We cannot have a society in which some dictator some place can start imposing censorship here in the United States. If somebody is able to intimidate folks out of releasing a satirical movie, imagine what's going to happen when they see a documentary they don't like or news reports they don't like."

The two inaugurations were different. The first inauguration I was thinking to myself, "Let's make sure I don't screw this up." I think there is - people always talk about how cool I am. I don't care how cool you are.

The Democrats should not waiver on our core beliefs and principles.

One of the things you discover about being president is that there are all these rules and norms and laws and you got to pay attention to them.