OVERNIGHT ENERGY: GOP sharpens climate message ahead of votes - The Hill's E2-Wire

But Rep. Ed Whitfield (R-Ky.) – who is a senior member of the Energy and Commerce Committee – defended the proposal against criticism that it's anti-science.

"Is this a debate about climate science?" Whitfield asked Simpson in a staged conversation on the House floor Wednesday.

Simpson replied: "It is not even necessary to be a climate change skeptic to be an EPA greenhouse gas regulation skeptic. These regulations are all economic pain for little if any environmental gain.”