The U.S. Environmental Protection Agency is reversing or weakening a rule that limits pollution from chemical plants.

Key evidence

• The 2024 EPA rule imposed stricter limits on toxic emissions from more than 200 chemical plants, including controls on ethylene oxide and chloroprene.
• ProPublica reported in January 2026 that the stricter rules technically remained in effect, but the EPA had exempted dozens of chemical plants and sterilization facilities while pursuing a formal process.
• In March 2026, the EPA proposed weaker limits for ethylene oxide, and later reporting described a broader plan to rescind the 2024 regulations. The available evidence supports weakening or reversal efforts, but not necessarily a completed repeal of the entire rule.

Detailed analysis

The claim is supported by developments under the Trump administration. The EPA’s 2024 rule required more than 200 chemical plants to reduce emissions of ethylene oxide and chloroprene, two carcinogenic pollutants. That rule was finalized by the Biden administration and remains the relevant pollution-control measure described in the claim. (SOURCES_1, 8, 9)

Sources

• Biden-Harris Administration Finalizes Stronger Clean Air Standards for Chemical Plants, Lowering Cancer Risk and Advancing Environmental Justice | US EPA
• EPA Releases Proposal to Rescind Obama-Era Endangerment Finding, Regulations that Paved the Way for Electric Vehicle Mandates | US EPA
• WHAT THEY ARE SAYING: Praise All Around for EPA’s Greatest and Most Consequential Day of Deregulation in U.S. History | US EPA
• Regulatory Tracker – Environmental and Energy Law Program
• Trump’s EPA Could Limit Its Own Ability to Use New Science to Strengthen Air Pollution Rules
• EPA proposes weaker pollution limits for chemical used to sterilize medical devices | PBS News
• Trump’s rollback of toxic gas rules limits EPA’s authority to protect public health, analysis says | US news | The Guardian
• New EPA rule says more than 200 U.S. chemical plants must reduce toxic emissions | PBS News