What specific emissions rule did Trump extend the compliance deadline for, and by how long?

President Donald J. Trump extended the compliance deadline by 2 years for the Hazardous Organic National Emission Standards for Hazardous Air Pollutants (HON) rule, which regulates emissions of hazardous air pollutants by the synthetic organic chemical manufacturing industry.

Why did the Trump administration justify extending the HON rule deadline?

The proclamation stated that the HON rule 'imposes substantial burdens on chemical manufacturers already operating under stringent regulations,' citing those regulatory burdens as the justification for the extension.

Policy Watch: Trump extends emission rule deadline for chemical companies

Jul 17, 2026

President Trump extended compliance deadlines for chemical manufacturers under the Clean Air Act's HON rule by two years. This adjustment addresses burdens on synthetic organic chemical plants following the regulation's finalization in May 2024.

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