H.R. 123 (119th)Bill Overview

Improving Science in Chemical Assessments Act

Environmental Protection|Administrative law and regulatory proceduresAppropriations
Cosponsors
Support
Republican
Introduced
Jan 3, 2025
Discussions
Bill Text
Current stageCommittee

Referred to the Committee on Science, Space, and Technology, and in addition to the Committee on Energy and Commerce, for a period to be subsequently determined by the Speaker, in…

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

The bill redirects chronic human-health hazard identification and dose-response assessments formerly performed through EPA’s IRIS program to the EPA program offices responsible for each chemical, provided a program office determines a need. It creates statutory scientific standards, requires program offices to assign toxicity values with ranges and uncertainty, and mandates a chemical assessment database in EPA’s Office of Research and Development.

Why people may split

Centralized IRIS assessments versus decentralizing to program offices

Watch point

Relative to its intended legislative type, this bill is a primarily administrative/operational measure that is reasonably well-constructed in specifying new roles, a coordinating committee, a database requirement, and scientific standards, but it leaves several practical implementation and resourcing details unspecified.

The bill redirects chronic human-health hazard identification and dose-response assessments formerly performed through EPA’s IRIS program to the EPA program offices responsible for each chemical, provided a program office determines a need.

It creates statutory scientific standards, requires program offices to assign toxicity values with ranges and uncertainty, and mandates a chemical assessment database in EPA’s Office of Research and Development.

The bill establishes a steering committee to coordinate work and avoid duplicate assessments, allows certain third-party assessments, and requires biennial certification to Congressional committees.

Passage40/100

Administrative, low-cost changes improve odds, but partisan/regulatory-science stakes and need for cross-committee acceptance reduce likelihood.

CredibilityPartially aligned

Relative to its intended legislative type, this bill is a primarily administrative/operational measure that is reasonably well-constructed in specifying new roles, a coordinating committee, a database requirement, and scientific standards, but it leaves several practical implementation and resourcing details unspecified.

Contention65/100

Centralized IRIS assessments versus decentralizing to program offices

02 · What it does

Who stands to gain, and who may push back.

Likely benefits vs burdens50% / 50%
Likely helpedCities

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

Likely helped
  • Potential benefitProgram offices can tailor chemical assessments to regulatory decisions, increasing decision relevance.
  • Potential benefitRequired uncertainty ranges and multiple point estimates could improve transparency about health risk magnitude.
  • Potential benefitA steering committee and coordination requirements could reduce redundant assessment efforts across EPA offices.
Likely burdened
  • Potential burdenTransferring IRIS assessments to multiple program offices could fragment methodologies and reduce consistency.
  • Potential burdenProgram offices may face increased workload requiring additional staffing and budgetary resources.
  • CitiesDifferent toxicity values across offices could produce inconsistent regulatory standards and invite legal disputes.
03 · Why people split

Why the argument around this bill splits.

Centralized IRIS assessments versus decentralizing to program offices
Progressive25%

Skeptical.

The persona would be concerned that moving assessments out of IRIS risks fragmenting expertise and politicizing science.

They would note the bill’s statutory scientific standards and peer-review language, but worry implementation and resourcing could weaken consistent protections.

Likely resistant
Centrist55%

Mixed but cautiously supportive.

The persona would welcome coordination, use-relevance, and clearer standards, while expressing concern about capacity, timelines, and potential duplication without sufficient funding.

Oversight provisions like biennial certification are viewed as useful checks.

Split reaction
Conservative75%

Generally supportive.

The persona would favor decentralizing assessments to program offices and using use-relevant science, arguing this reduces central bureaucracy and aligns science with regulatory contexts.

They may object to added reporting burdens but appreciate third-party inclusion and transparency requirements.

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 likelihood40/100

Administrative, low-cost changes improve odds, but partisan/regulatory-science stakes and need for cross-committee acceptance reduce likelihood.

Scope and complexity
52%
Scopemoderate
52%
Complexitymedium
Why this could stall
  • Absent cost estimate for implementation and staffing impacts
  • How affected stakeholders (industry, environmental groups) will mobilize
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

Centralized IRIS assessments versus decentralizing to program offices

Administrative, low-cost changes improve odds, but partisan/regulatory-science stakes and need for cross-committee acceptance reduce likeli…

Unlocked analysis

Relative to its intended legislative type, this bill is a primarily administrative/operational measure that is reasonably well-constructed in specifying new roles, a coordinating committee, a database requirement, and s…

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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