debate the science of climate change. but i'm astute to understand that every proposal involves hurting our economy and killing american jobs. >> he's not alone in there. as politico reports, leading conservatives have a new talking point on climate science. they're not qualified to talk about it. that's what they're saying. u.s. congressman chris van hollins, a democrat from maryland. all i want to do is get one thing straight. is the democratic party committed to doing something about climate change? >> absolutely. >> is the republican committed not to doing anything? >> yes. >> is it fair to say this is a sheerly partisan issue? >> unfortunately, yes. republicans still have their head in the sand, even on the most basic fact of the existence of climate change. >> you're a politician, fast rising.