OKLAHOMA CITY (Legal Newsline) – Oklahoma Attorney General Scott Pruitt announced on Tuesday that Oklahoma and a coalition of 11 other states filed a lawsuit against the Environmental Protection Agency seeking the invalidation of a 2011 settlement.

In 2011, the EPA agreed to a settlement in which it promised to issue a pending rule to regulate existing power plants under Section 111(d) of the Clean Air Act (CAA). Pruitt and the rest of the coalition argue the 2011 settlement agreement is illegal because the law prohibits existing power plants from being regulated under Section 111(d) because such power plants are regulated under Section 112(d) of the CAA.