Power companies, states, municipalities, and industry groups filed another 23 lawsuits challenging the Environmental Protection Agency’s Cross-State Air Pollution Rule for power plants by the October 7 deadline. The challengers are asking the U.S. Court of Appeals for the District of Columbia Circuit to overturn the agency’s SO2 and NOx emissions limits on power plants. The lawsuits are currently being consolidated, and the court has not yet set a briefing schedule.