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119-s-623119th Congress

No IRIS Act of 2025

Sponsored By: Senator Kennedy, John [R-LA]

Introduced

Summary

Blocks EPA from using IRIS assessments as a basis for regulation and permitting. This bill would prohibit the Environmental Protection Agency from using any assessment produced by the Integrated Risk Information System to develop or finalize rules, carry out regulatory or enforcement or permitting actions, or inform air toxics assessments and related mapping or screening tools.

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  • Facilities and industry that face EPA rules or permits would no longer see IRIS assessments cited as the scientific basis in those actions.
  • Communities, public health groups, and researchers would see air toxics mapping and screening tools stop relying on IRIS-generated assessments.

*The bill specifies no new funding and does not impose direct effects on federal spending or revenues.*

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Bill Overview

Analyzed Economic Effects

1 provisions identified: 0 benefits, 1 costs, 0 mixed.

EPA banned from using IRIS assessments

This bill would prohibit the EPA Administrator from using any assessment produced by the IRIS program to develop, finalize, or issue rules. It would also bar EPA from using IRIS assessments to carry out regulatory, enforcement, or permitting actions. The bill would forbid using IRIS assessments to inform air toxics assessments, mapping, or screening tools. The prohibition would apply notwithstanding any other law and would take effect on enactment. If enacted, regulated companies, state and local agencies, and households could see different science used in pollution decisions and protections.

Sponsors & CoSponsors

Sponsor

Kennedy, John [R-LA]

LA • R

Cosponsors

  • Sen. Wicker, Roger F. [R-MS]

    MS • R

    Sponsored 6/27/2025

  • Sen. Tuberville, Tommy [R-AL]

    AL • R

    Sponsored 12/11/2025

  • Sen. Budd, Ted [R-NC]

    NC • R

    Sponsored 12/17/2025

Roll Call Votes

No roll call votes available for this bill.

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