I come back to the science that is in it to reduce our dependence on foreign oil and climate change. It's about science, science, science and science, innovation, as we rebuild America, create jobs, invest in our people and turn this economy around.

I think Bernie Sanders understands better than anyone the chasm that exists between a Democratic - the Democrats and the Republicans when it comes to being there for America's working families, and that's what he's about, and that's what we're about as Democrats.

Of course the issue of ending war, and creating prosperity; they're overarching issues all the time. But right now, the challenge to this generation I believe is the climate crisis. It's a national security issue, it's a health issue in terms of clean air, it's a competitiveness issue in terms of innovation and it's a moral issue to preserve the planet for the next generation.

We are not going back to the failed policies of the past. We are fighting for the middle class!

You know, God bless him, bless his heart, president of the United States, a total failure, losing all credibility with the American people on the economy, on the war, on energy, you name the subject.

Unemployment benefits are creating jobs faster than practically any other program

The death of Osama bin Laden marks the most significant development in our fight against al-Qa'ida. I salute President Obama ... in achieving this major accomplishment. ... The death of Osama bin Laden is historic.