ClimateWire: The House Energy and Commerce Committee is expected to pass legislation this week that would overhaul U.S. energy and global warming policy, assuming Democrats can stay united in the face of hundreds of GOP amendments. Unveiled Friday, H.R. 2454 (pdf) includes items long sought by environmentalists, including a cap-and-trade program to curb greenhouse gas emissions and a nationwide renewable electricity standard. The 932-page bill, also comes with the support of President Obama, who …