"Humans are not responsible for climate change in the way some of these people out there are trying to make us believe, for the following reason: I believe the climate is changing because there’s never been a moment where the climate is not changing. The question is, what percentage of that … is due to human activity? If we do the things they want us to do, cap-and-trade, you name it, how much will that change the pace of climate change versus how much will that cost to our economy? Scientists can’t tell us what impact it would have on reversing these (climate) changes, but I can tell you with certainty, it would have a devastating impact on our economy." Senator Marco Rubio (R-FL) 2014