Trump’s rollback of toxic gas rules limits EPA’s authority to protect public health, analysis says

# Trump’s rollback of toxic gas rules is a deliberate bid to gut EPA’s power to protect public health The Trump administration’s newly proposed repeal of 2024 federal ethylene oxide (EtO) emissions standards is far more than a targeted giveaway to chemical and medical sterilization industry polluters. A close review of the proposal reveals it is explicitly designed to constrain the Environmental Protection Agency’s statutory authority to set science-backed public health protections for all hazardous air pollutants, a move that would have cascading, life-threatening consequences for communities across the United States. Ethylene oxide, a colorless, flammable gas used to sterilize medical equipment, spices, and a range of consumer goods, as well as a common byproduct of chemical manufacturing, has long been classified as a hazardous air pollutant under the Clean Air Act. The last major update to its emissions standards, finalized in 2006, relied on an EPA risk assessment that drastically underestimated the chemical’s carcinogenic potency. Updated research published in the years since has found EtO is roughly 60 times more likely to cause cancer than the 2006 analysis concluded, with chronic exposure linked to elevated rates of lymphoid cancers, breast cancer, and other severe, life-altering health conditions. In 2024, the Biden administration’s EPA finalized a long-overdue update to EtO standards, requiring the nation’s largest emitters to cut collective output by approximately 90% to reduce exposure for communities living near sterilization facilities, chemical plants, and other emission sources. The rule was a direct response to decades of advocacy from frontline residents, who had documented far higher local cancer rates tied to unregulated EtO pollution. The Trump administration’s proposed rollback would eliminate these critical 2024 requirements entirely, but its threat extends far beyond a single chemical. Analysis of the proposal confirms the policy shift is explicitly designed to tie the EtO repeal to new, sweeping restrictions on the EPA’s rulemaking authority— a move public health advocates warn would set a precedent for weakening emissions standards for every hazardous pollutant regulated under the Clean Air Act. If finalized, the policy would bar the EPA from updating emissions standards for any hazardous air pollutant as new public health research emerges, even when such updates are explicitly mandated by federal law. The communities most harmed by this rollback are already disproportionately low-income, Black, and Latino, bearing the brunt of industrial pollution due to decades of discriminatory zoning and regulatory neglect. Allowing EtO emitters to operate under the woefully outdated 2006 standards, which fail to reflect the latest science on the chemical’s health risks, would condemn these communities to continued exposure to a known carcinogen, with no clear path for relief. The proposal is currently open for a 60-day public comment period, but legal challenges are all but guaranteed if the rule is finalized. Public health organizations and state governments are expected to argue the rollback violates the EPA’s statutory obligation to set emissions standards based on the latest available scientific evidence, a core tenet of the Clean Air Act that has guided federal public health policy for more than 50 years. This policy shift marks a stark and dangerous departure from recent federal efforts to reduce exposure to known carcinogens in residential and industrial communities across the U.S. It is a clear signal that the current administration prioritizes the profits of corporate polluters over the health and safety of the American public, and a direct attack on the EPA’s core mission to safeguard the air we breathe.