ClimateWire: Carbon market enthusiasts have largely given up on the idea of federal legislation on greenhouse gas emissions. Instead, most are now looking to establish cap-and-trade in the United States gradually, through the spread of regional programs. Experts see only grim prospects for future leadership on climate change coming from Washington after today’s vote count is tallied. But they’re all also optimistic that a move in California to end that state’s emissions control program will fail. That failure,…