Causes stateimpact.npr.org EPA rolls back air regulations for waste coal plants in western Pa., W.Va. Mercury rule exemption applies to three plants in Pennsylvania, one in West Virginia.
Politics www.washingtonpost.com Power companies don't want the Trump administration to reverse the mercury rule The 2011 mercury rule did more to hasten the closure of coal-fired power plants than any other regulation adopted under President Obama.
Elon Musk has criticized environmental regulations. His companies have been accused of sidestepping them.
