The D.C. Circuit held that EPA overstepped its authority under the CAA when it banned the use of hydrofluorocarbons (HFCs) in products. In 2015, EPA issued a rule that restricted the manufacture of products containing HFCs. EPA based this decision on its authority to regulate "ozone depleting substa...

A district court held that New York's Zero-Emission Credit (ZEC) program is not preempted by federal law. In an effort to curb the effects of global warming, New York issued a Clean Energy Standard (CES) Order that created two programs, one being ZEC. A ZEC is a “credit for the zero-emissions attr...

The D.C. Circuit held that EPA must justify emissions limits set for certain hazardous air pollutants. The CAA requires EPA to set limits for seven different hazardous air pollutants (HAPs). In 2015, the Agency claimed to have identified sources of these pollutants and set emissions limits for them....