President Barack Obama's signature environmental regulation has begun a bitter battle in court this week, facing challenges from a wide-reaching lawsuit that could cripple the administration's action against climate change.
Officials from 27 states claim the Clean Power Plan goes too far in its effort to curb greenhouse gas emissions from the nation's power plants.
In an extraordinary step, all 10 judges of the U.S. Court of Appeals for the District of Columbia Circuit chose to preside. The court is expected to decide early next year, and the case could go to the Supreme Court.
Here & Now's Robin Young gets the latest on legal challenges to the Clean Power Plan from Ellen Gilmer of EnergyWire.
This segment aired on September 28, 2016.