The significance of the Clean Air Act in environmental politics lies in its ability to establish a legal framework for regulating air pollution and protecting public health. Enacted in 1970, it provided the Environmental Protection Agency (EPA) with the authority to set air quality standards and enforce compliance. This landmark legislation has led to significant improvements in air quality across the United States, reducing pollutants that contribute to respiratory diseases and environmental degradation. The Clean Air Act symbolizes the growing recognition of governmental responsibility in addressing environmental issues and protecting future generations.