It's been a busy week in Congress for climate legislation. But signals have been mixed. http://www.huffingtonpost.com/bill-chameides/congress-on-climate-a-zig_b_182960.html
Four more rounds of formal negotiations are scheduled before the Dec 7-18 talks in Copenhagen. These are June 1-12 in Bonn, Germany; Aug 10-14 in Bonn; Sept 28 to Oct 9 in Bangkok; and Nov 2-6, at a venue yet to be decided.
In addition, heads of state and government will gather in September at a U.N. climate change summit in New York and President Obama will host a major economies forum on the sidelines of the G8 in Italy in July. Two other meetings convened by the United States will take place, one probably 26-27 May in Paris and another in June.