As the Senate Environment and Public Works Committee began hearings on carbon regulation, debate ran along traditional battle lines, but with a new script. Democrats Barbara Boxer (CA) and John Kerry (MA) moved away from discussing the environmental impacts of climate change - - and the reason, therefore, to take action to reduce carbon emissions - - and focused instead on the economic benefits of a domestic clean energy economy. Meanwhile, Republicans James Inhofe (OK) and Lamar Alexander (TN) complained that energy bills would rise and Americans would lose jobs.