Vehicle emissions standards directly sparked the development and application of a wide range of automotive technologies that are now found throughout the global automobile market.

Do you have the vision to help empower and channel the energy at the grassroots level?This is not about one person; this is about millions of people all working together to protect and advance the interests of working Americans.

I like Paul Ryan, and to a certain extent, I feel bad for him. But this is a moment of moral choice. And if he says that Hillary Clinton is worse than a openly racist, Muslim-hating misogynist who wants to build a wall to exclude Mexicans, who thinks that a judge, an American judge because of his Mexican lineage cannot be fair to him, if you`re saying that Hillary Clinton is worse than all that, then I just think that that just is ridiculous, it`s absurd, and it really starts to damage the speaker`s credibility.

Hopefully folks will look at the good things that I've done over the years, you know, my 10 years in Congress, my 12 years in state legislature, my many years of community organizing for the environment, for police accountability, for criminal justice reform, economic empowerment, trying to fight for small-business people, all these things.

We think all over this country we need to rebuild everything from transit, fiber optic broadband in our rural areas and urban areas.

I'd say the most important criteria is vision. What is your vision for the party? Do you have a vision to strengthen the grassroots and help them turn out people in their local communities? That's the real thing. The real question is not about one person. It's not about an individual. It's about millions of people working all over this country to reach out in their local communities. And the DNC chair has to help them do that and have a vision for that and have the energy for that.

We've got to build a durable relationship of trust with voters around the things that they are most concerned about.