On December 17, 1963, one of the first major pieces of environmental legislation in the United States became law. The Clean Air Act empowers federal and state agencies to research and regulate air pollution, marking a major expansion of government efforts to fight back against the damage being done to the climate.
A 1955 law, the Air Pollution Control Act, had allocated $15 million to the study of air pollution across the country. As the federal government and the states conducted this research, it became clear that further legislation would be needed. After passing through Congress relatively swiftly, a stronger act was signed into law on December 17, 1963 by President Lyndon B. Johnson, who had been in power for less than a month following the assassination of John F. Kennedy.
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