New York Times: With Election Day less than two weeks away and Republicans rallying around their opposition to U.S. EPA regulations, the agency is expected to wait before it tightens the nationwide limit on ozone pollution. At issue is the Obama administration’s revision of the National Ambient Air Quality Standards (NAAQS) for ground-level ozone, which is linked to breathing problems and heart disease. Ever since EPA proposed tightening the George W. Bush-era standards in January, the issue has …