John Kerry actually said...

"the evidence is now clearer than ever before that a voluntary approach won't get the job done."

"Today, we have an opportunity to lead the world in rolling back the urgent threat of climate change."

"If we are wrong, we will have created more jobs, become more energy independent..."

"If it goes over 2 degrees Centigrade, we risk catastrophic changes to the climate, to our crops, to our water supply."