What was the first national law for air pollution control in the United States?

The Clean Air Act was the first significant national legislation enacted to address air pollution control in the United States. Established in 1963 and updated in various forms since then, this landmark law provided the federal government with the authority to regulate air emissions from stationary and mobile sources to protect public health and the environment.

The Clean Air Act set forth comprehensive federal and state regulations aimed at reducing air pollutants that contribute to smog, acid rain, and other hazardous air quality issues. It established National Ambient Air Quality Standards (NAAQS) to ensure that air quality remains safe for the public and set a framework for states to develop their own implementation plans. This act marked a significant commitment by the U.S. government to tackling air quality challenges, making it a foundational piece of environmental legislation.

In contrast, the other options listed do not represent recognized legislation concerning air quality control in the U.S. For instance, the Breathe Free Law and the Blue Skies Law do not refer to real laws regarding air pollution. The Kennedy-Johnson Act is not a formal title for any air quality legislation, although it may refer to various governmental actions or initiatives during that era. The prominence of the Clean Air Act in historical and legislative contexts solidifies its status as the first