Bill Clinton: “Now, that's what this election season is about.”

And I think we are facing challenges today without precedent in our history.

I thought he was a good president.

I don't think any person with a straight face can tell you that Katrina was caused by global warming. But what we do know, what the evidence shows, is that there is an increase in the number and severity of bad weather events all across…

We strenuously deny any wrongdoing.