John Kerry: “What I am getting at is, can we create a system where you have two or three rates and you don't create a bubble?”

We will communicate to the office that you're asking and that it's important to try to get to it as soon as possible.

Without a border protected you don’t have a nation.

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

The message is, let's find a way to be able to make sure when we fly, we're not leaving emissions that we cannot capture.