When you're a candidate and you say something that is inaccurate or controversial, it has less impact than it does when you're president of the United States. Everybody around the world's paying attention. Markets move. National security issues require a level of precision in order to make sure that you don't make mistakes.

Everybody potentially can make the claim that we should all be treated fairly.

We're not going to have you burdening the health system.

If any individual who objects to government policy can take it in their own hands to publicly disclose classified information, then we will never be able to keep our people safe or conduct foreign policy.

In my first term, I sang Al Green. In my second term, I'm going with Young Jeezy.

I look forward to hosting Prime Minister Lee [Hsien Loong], whose friendship and partnership I appreciate very much and with whom I've worked throughout my administration. This will also be an opportunity for me to reciprocate the hospitality that the Prime Minister and the people of Singapore showed to me during my visit to Singapore for the APEC summit in 2009.

The bottom line is that it's hard to find a model in which you can practically administer and sustain political support for those kinds of efforts. And what makes America complicated as well is the degree to which this is not just a black/white society, and it is becoming less so every year.