“Transparency” sounds positive, but this rule instead prevented the EPA from using some of the best available science to protect human health. For example, it required the EPA to ignore or ...

During the first Trump administration, chemical companies or their representatives repeatedly filed requests for changes to final EPA toxicity assessments on ethylene oxide and chloroprene.

However, in the final 2020 rule for the nation’s PM2.5 air quality standard, the EPA administrator, Andrew Wheeler, stated that “limitations in the science lead to considerable uncertainty ...