Toxic smog from coal plants pays no mind to state lines. The EPA doesn't seem to care.

Delaware and Maryland have been complaining for years to the U.S. Environmental Protection Agency that the pollution wafting over from coal plants in neighboring states has been making their residents sick—which, they argue, is a violation of the Clean Air Act. Finally, after multiple court orders to address the states' requests to address the problem, the EPA has an answer: It's going to do nothing. In its notice of denial, acting agency head Andrew Wheeler argues that the EPA does not have sufficient evidence to conclude that the migrating pollutants impact the downwind states’ ground-level ozone or smog, which has been linked to premature deaths and respiratory illnesses. But according to Delaware and Maryland, some plants aren’t using the post-combustion controls that limit nitrogen oxide pollution—some don’t even have them installed. The decision is yet another boon to the fossil fuel industry, which has been on a winning streak under the Trump administration. See: the EPA’s proposed replacement of the Clean Power Plan, or the proposal to loosen coal ash rules.