Carbon Positive: US climate policy has come along way in 2009 under an Obama White House and a Democrat-controlled Congress. But there is still a way to go before proactive, nationwide climate laws are in place in America and the US offers a substantive positive lead on efforts to secure a new international climate accord required in a few short months. A US cap-and-trade bill has passed the House of Representatives and is now being considered in the Senate. As such, its biggest obstacle still lies in …