The Iranian people are getting restive because of the challenges that sanctions have posed to their economy.

There is not a liberal America and a conservative America - there is the United States of America. There is not a black America and a white America and latino America and asian America - there's the United States of America.

Reinvigorating the Civil Rights Division of the Justice Department, making sure that in our Department of Education, where we see evidence of black boys being suspended at substantially higher rates than white boys for the same behavior, in the absence of that kind of rigorous enforcement of the nondiscrimination principle, then the long-standing biases that I believe have weakened, but are still clearly present in our society, assert themselves in ways that usually disadvantage African Americans.

We learn from our mistakes, we do some reflection, we lick our wounds, we brush ourselves off - then we go forward, with the presumption of good faith in our fellow citizens.

Senator Joe Biden is pretty clean and articulate for a white guy.

The issue of climate change is one that we ignore at our own peril. There may still be disputes about exactly how much we're contributing to the warming of the earth's atmosphere and how much is naturally occurring, but what we can be scientifically certain of is that our continued use of fossil fuels is pushing us to a point of no return. And unless we free ourselves from a dependence on these fossil fuels and chart a new course on energy in this country, we are condemning future generations to global catastrophe.

If you think that we've overregulated in the environmental space what I can show you is that we have tripled the amount of wind power in this country, increased by tenfold the amount of solar power. We are producing as much oil and gas as we've ever produced.