The U.S. Court of Appeals for the Second Circuit on Monday halted an attempt by the Trump administration to delay implementation of new penalties for automakers that fail to meet fuel efficiency standards.

The decision by a panel composed of Circuit Judges Ralph Winter, Rosemary Pooler and Barrington Parker represents a win for states including New York, California and Pennsylvania, as well as environmental groups that joined them in arguing the National Highway Traffic Safety Administration lacked authority and violated a number of federal statutes in delaying implementation of the penalty rule.