The Republican party has largely moved beyond denying the existence of climate change but continues to oppose dramatic action to halt it, worried about the short-term economic consequences.
South Carolina Republican Sen. Lindsey Graham's commitment to environmental protection is in question as he fights in what's shaping up to be his toughest election yet.
Sen. Mitt Romney (R-Utah), who is emerging as a pragmatic leader among Senate Republicans, is at the center of private discussions among GOP senators about crafting a legislative response to climate change.
