I'm not going to be responding to [Donald Trump].

A man with a long history of racial discrimination should never run our government.

President Obama's made the White House really the people's house. People feel like they're welcome.

I have a comprehensive energy policy, but it really does include fighting climate change, because I think that is a serious problem.

I think science is real. And I think it's important that we grip this and deal with it, both at home and abroad.

With less competition, corporations can use their power to raise prices, limit choice for consumers, cut wages for workers, crowd out start-ups and small businesses.

The first step is to take weapons off the streets and to put more police on them.