The U.S. Environmental Protection Agency reversed a decision to delay an Obama-era rule requiring states to curb smog-causing emissions, one day after 15 states sued the agency over the move.
奥巴马在任时做出了要求各州遏制引起烟雾的各类排放的规定，15 个州因为该项规定对美国国家环境保护局进行起诉。起诉一天后，EPA 推翻了该项规定。