Sanctions alone could not stop Iran's nuclear program. But they did help bring Iran to the negotiating table.

I'll be the first US president to not only visit Kenya and Ethiopia, but also to address the continent as a whole, building off the African summit that we did here which was historic and has, I think, deepened the kinds of already strong relationships that we have across the continent.

Often the best source of information about waste, fraud, and abuse in government is an existing government employee committed to public integrity and willing to speak out. Such acts of courage and patriotism, which can sometimes save lives and often save taxpayer dollars, should be encouraged rather than stifled as they have been during the Bush administration. We need to empower federal employees as watchdogs of wrongdoing and partners in performance.

It's not a nice-to-have - it's a must-have. It's time we stop treating child care as a side issue, or a women's issue, and treat it like the national economic priority that it is for all of us.

The degree of polarization that currently exists in Washington is such where I think it's fair to say if I presented a cure for cancer, getting legislation passed to move that forward would be a nail-biter.

Theoretically, you can make, obviously, a powerful argument that centuries of slavery, Jim Crow, discrimination are the primary cause for all those gaps. That those were wrongs done to the black community as a whole, and black families specifically, and that in order to close that gap, a society has a moral obligation to make a large, aggressive investment, even if it's not in the form of individual reparations checks, but in the form of a Marshall Plan, in order to close those gaps. It is easy to make that theoretical argument.

We should raise the minimum wage so that no one who works full time has to live in poverty