Business Green: The US Chamber of Commerce is trying to quash an effort by a group of state-level chambers to create a separate lobbying body for climate change regulation. The organisation is feeling threatened by the Chambers for Innovation and Clean Energy (CICE), a proposed group of breakaway member chambers that plans to pursue market-based approaches to reducing greenhouse emissions. In a letter to member chambers, US Chambers of Commerce president Winthrop Hallett accused the breakaway …