FILE - Emissions rise from smokestacks at the Jeffrey Energy Center coal power plant, near Emmett, Kan., Sept. 18, 2021. The Supreme Court decided Thursday, June 27, 2924, that the EPA won't be able to enforce a key rule limiting air pollution in nearly a dozen states while separate legal challenges proceed around the country. The EPA's "good neighbor" rule is intended to restrict smokestack emissions from power plants and other industrial sources that burden downwind areas with smog-causing pollution.Ohio, Indiana and West Virginia challenged the rule, along with the steel industry and other groups. (AP Photo/Charlie Riedel, File)