1. United States
2. Pa.
3. Letter

The Clean Air Act and rules limiting hazardous air pollutants are vital protections that should not be weakened or undermined. Overturning the EPA regulation on the "Once In, Always In" policy would allow major industrial facilities to increase emissions of highly toxic pollutants like mercury, dioxins, and benzene that are linked to cancer, birth defects, and brain damage. This poses grave risks to public health, especially for vulnerable populations like children. Instead of rolling back standards, we should be enhancing the EPA's ability to hold polluters accountable and reduce toxic air pollution. Air quality impacts all Americans and clean air rules are non-negotiable safeguards that must be upheld and strengthened, not dismantled. I urge you to reject any efforts to weaken this critical environmental and public health protection.