1990 amendments

The 1990 amendments generally refer to changes made to various U.S. laws, notably the Clean Air Act, which aimed to improve air quality and address pollution. Key aspects included stricter standards for air pollutants, provisions for reducing acid rain, and measures to protect the ozone layer. These amendments emphasized the importance of public health and environmental protection, requiring states to develop plans to meet federal air quality standards. Overall, they represented a significant step toward a more proactive approach to environmental issues and aimed to ensure cleaner air for future generations.