The clean air act isn't an EPA regulation. It was created by an act of congress, and part of that law requires the EPA to file regular reports on whether or not

The clean air act isn't an EPA regulation. It was created by an act of congress, and part of that law requires the EPA to file regular reports on whether or not the law is working. https://www.epa.gov/clean-air-act-overview/1990-clean-air-act-amendment-summary https://www.epa.gov/clean-air-act-overview/1990-clean-air-ac...