President Obama focused on energy independence in his weekly address, following a week dominated by the chaotic rollout of his signature healthcare law.Obama touted increased natural gas production, more efficient energy use and a drop in carbon emissions in his speech, arguing that lower carbon emissions don’t slow economic growth.Obama largely abandoned a push for comprehensive climate change legislation as he fought to pass ObamaCare before Democrats lost the House in 2010. But the administration has put in place new rules regarding carbon emissions, and the Environmental Protection Agency has released draft rules limiting how much carbon