Barack Obama: “The commitment of so many of its largest cities to early peaking highlights China's resolve to take comprehensive action…”

I hope this center will serve as an affirmation of just how special, how precious our democracy truly is.

While we are non-partisan, we are not value-neutral. We have a point of view.

They're meant to remind us of who we can be, to remind us of what's possible, so we can forge ahead.

Every president here today, as different as we are, has tried our best to uphold the values that John McCain and Mitt Romney believed in no less than I did.