在被 15 个州起诉一天后，环境保护局局长斯科特·普鲁特改变了他早先推迟实施奥巴马时代减少烟雾空气污染物排放规定的决定。
One day after getting sued by 15 states, Environmental Protection Agency chief Scott Pruitt reversed his earlier decision to delay implementation of Obama-era rules reducing emissions of smog-causing air pollutants.