Reuters: Energy Secretary Steven Chu said on Monday he was still hopeful President Barack Obama would be able to sign a domestic carbon-cutting bill before a crunch global climate meeting in Copenhagen in December. The prospective U.S. law is widely considered vital to allow the United States to take a firm stance in Copenhagen, and so unblock an impasse on targets to cut carbon emissions and funding to fight climate change at the United Nations-led talks. “Whether there will be a bill …