U.S. News and World Report: President Barack Obamas recent promise to lead by example on climate had the potential to be a major step forward. But sadly, his latest pledge to reduce greenhouse gases seems poised to keep our nation moving backward. While he committed to reducing greenhouse gases within the federal government by 40 percent over the next decade, he completely ignored one of the most significant sources of greenhouse gas emissions under his control: fossil fuel production from public lands owned by every American....