Trump rolls back essential controls on mercury emissions

See full analysis from Sierra Club here

Trump Erodes Air Quality Standards for Tiny Particles that Cause Death and Disease

The Biden administration updated air quality standards in 2024 to protect Americans and reduce deaths and disease.  The negative health problems caused by tiny particles in the air had been demonstrated in hundreds of studies. This was a National Ambient Air Quality Standard under the Clean Air Act.

In 2025 Trump decided to abandon this standard and go back to allowing more emissions from power plants and other combustion sources, which will also contribute to greater climate change.

Biden revisions to air quality standard for particulate matter in 2024 - Rule published in Federal Register

EPA increases pollution of air by tiny particles known as PM -- Trump EPA moves to abandon rule that sets tough standards for deadly soot pollution.  By Matthew Daly.  AP.  Nov 25, 2025.  

EPA Derails Reporting for PFAS Manufacturing and Importing Adopted by Congress

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