ClimateBiz: Former presidential hopeful John Kerry said a climate treaty stands a better chance of passing Congress if all nations join the climate change fight. The Massachusetts senator is in Poland attending the final phase of the United Nations climate change negotiations and will report back to President-elect Barack Obama. His words signaled an old gripe of the U.S.: developing countries, such as India and China, must enter the fray and curtail their fast growing emissions. “The …