John Kerry: “America is the world's largest historical emitter of greenhouse gases that cause climate change.”

No, that's not acceptable. And I believe it was an algorithm that kicked that out kind of crazily.

The entire U.N. process is geared to bring people together around a common goal.

In terms of global challenges and U.S. interests, yes.

We are now giving less than a lot of other countries are doing in order to help particularly on climate.