Mass. environment Commissioner Cash talks economic impacts of EPA climate rule

As the Obama administration announces federal limits on greenhouse gas emissions from existing power plants this morning, do states that have already implemented cap-and-trade mechanisms provide a good example for how the rule might work? During today's OnPoint, David Cash, commissioner of the Massachusetts Department of Environmental Protection, discusses the economic and emissions numbers associated with his state's carbon regulations. He also talks about the behind-the-scenes conversations among states on linking with the Regional Greenhouse Gas Initiative, of which Massachusetts is a member.