The Associated Press reports that “the Environmental Protection Agency proposed tougher new limits on Tuesday on smokestack emissions from nearly two dozen states that burden downwind areas with air pollution from power plants they can’t control.”  

“At the same time, the EPA moved to remove two states — South Carolina and Florida — from the “good neighbor” rules, saying they don’t contribute significant amounts of smog to other states.”  

“The EPA proposal came as Republicans in Congress moved to block President Barack Obama’s plan to force steep cuts in greenhouse gas emissions from U.S. power plants.”