H.R. 1415 (119th)Bill Overview

No IRIS Act of 2025

Environmental Protection|Environmental Protection
Cosponsors
Support
Lean Republican
Introduced
Feb 18, 2025
Discussions
Bill Text
Current stageCommittee

Referred to the Subcommittee on Water Resources and Environment.

Introduced
Committee
Floor
President
Law
Congressional Activities
01 · The brief
Plain-English summaryWhat this bill actually does

This bill bars the Environmental Protection Agency from using any assessments produced by the Integrated Risk Information System (IRIS) program. Specifically, it prohibits use of IRIS assessments for rulemaking, regulatory/enforcement/permitting actions, and for informing air toxics assessments or mapping and screening tools.

Why people may split

Liberals emphasize lost public-health protections; conservatives emphasize reduced regulatory burden

Watch point

Narrow, ideologically driven deregulatory measure likely to split along partisan lines; easier in a chamber favoring deregulatory bills.

This bill bars the Environmental Protection Agency from using any assessments produced by the Integrated Risk Information System (IRIS) program.

Specifically, it prohibits use of IRIS assessments for rulemaking, regulatory/enforcement/permitting actions, and for informing air toxics assessments or mapping and screening tools.

Passage25/100

Substantive curb on federal regulatory science with high partisan salience and no compromise features makes ultimate enactment unlikely absent favorable chamber majorities.

CredibilityPartial

How solid the drafting looks.

Contention70/100

Liberals emphasize lost public-health protections; conservatives emphasize reduced regulatory burden

02 · What it does

Who stands to gain, and who may push back.

Likely benefits vs burdens50% / 50%
Permitting processFederal agencies

These are examples from the analysis, not a ranked list of the most-affected groups.

Likely helped
  • Potential benefitReduces availability of IRIS-based risk findings as basis for stricter chemical limits, potentially lowering compliance…
  • Permitting processDecreases regulatory burden and permit conditions that would rely on IRIS assessments.
  • Potential benefitCreates clearer expectations for businesses if agencies adopt standardized alternative assessment processes.
Likely burdened
  • Federal agenciesRemoves a central EPA scientific program, weakening the federal scientific basis for chemical risk evaluations.
  • Potential burdenCould delay or prevent regulations addressing toxic exposures, increasing public health and environmental risks.
  • Potential burdenForces agencies to rework or commission alternative assessments, increasing administrative costs and litigation risk.
03 · Why people split

Why the argument around this bill splits.

Liberals emphasize lost public-health protections; conservatives emphasize reduced regulatory burden
Progressive5%

Likely to view the bill as a damaging limitation on EPA's ability to protect health and environment.

Sees it as removing an established scientific input used to justify regulations and safeguards.

Likely resistant
Centrist40%

Views the bill with concern about undermining evidence-based regulation, but recognizes problems if IRIS lacks transparency.

Sees need for balance between transparent science and regulatory certainty.

Split reaction
Conservative80%

Likely to support the bill as a constraint on regulatory overreach and use of nontransparent assessments.

Sees it as protecting industry and permitting decisions from hidden or unreviewed science.

Leans supportive
04 · Can it pass?

The path through Congress.

Introduced

Reached or meaningfully advanced

Committee

Reached or meaningfully advanced

Floor

Still ahead

President

Still ahead

Law

Still ahead

Passage likelihood25/100

Substantive curb on federal regulatory science with high partisan salience and no compromise features makes ultimate enactment unlikely absent favorable chamber majorities.

Scope and complexity
52%
Scopemoderate
24%
Complexitylow
Why this could stall
  • No CBO or cost estimate provided
  • How 'use' of IRIS is legally interpreted
05 · Recent votes

Recent votes on the bill.

No vote history yet

The bill has not accumulated any surfaced votes yet.

06 · Go deeper

Go deeper than the headline read.

Included on this page

Liberals emphasize lost public-health protections; conservatives emphasize reduced regulatory burden

Substantive curb on federal regulatory science with high partisan salience and no compromise features makes ultimate enactment unlikely abs…

Unlocked analysis

Pro readers get the full perspective split, passage barriers, legislative design review, stakeholder impact map, and lens-based policy tradeoff analysis for No IRIS Act of 2025.

Go beyond the headline summary with full stakeholder mapping, legislative design analysis, passage barriers, and lens-by-lens tradeoff breakdowns.

Perspective breakdownsPassage barriersLegislative design reviewStakeholder impact map
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