John Kerry: “I noticed the first advertisement they're running is a negative one.”

the U.N. Finance Analysis suggests that it will cost trillions of dollars. Maybe $2.5 to $4.5 trillion a year between now and 2050.

We're spending billions--literally, actually, trillions.

I think I am pursuing common sense for political right, political left, republican, democrat.

There is no current proposal or plan that has been agreed to which would require us to do that.