H.R. 2821 (119th)Bill Overview

FDA Modernization Act 3.0

Health|Health
Cosponsors
Support
Bipartisan
Introduced
Apr 10, 2025
Discussions
Bill Text
Current stageCommittee

Referred to the House Committee on Energy and Commerce.

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

Requires HHS, through the FDA Commissioner, to publish an interim final rule within one year aligning FDA regulations with the 2023 amendment to section 505(i) of the FD&C Act. The rule must replace generic references to tests, data, studies, models, and research with the term “nonclinical” in specified 21 CFR sections and add a statutory definition of “nonclinical test.” The interim final rule is made immediately effective without demonstrating "good cause" under the Administrative Procedure Act.

Why people may split

All support modernization; liberals emphasize animal welfare and validation.

Watch point

Relative to its intended legislative type, this bill is a clear, narrowly scoped administrative directive to the Department of Health and Human Services/FDA that identifies specific regulatory text changes and sets a one-year deadline for issuance of an interim final rule.

Requires HHS, through the FDA Commissioner, to publish an interim final rule within one year aligning FDA regulations with the 2023 amendment to section 505(i) of the FD&C Act.

The rule must replace generic references to tests, data, studies, models, and research with the term “nonclinical” in specified 21 CFR sections and add a statutory definition of “nonclinical test.” The interim final rule is made immediately effective without demonstrating "good cause" under the Administrative Procedure Act.

The bill also renumbers an existing FD&C Act subsection (z) to (aa) as a technical amendment.

Passage60/100

Targeted regulatory alignment typically clears Congress, but immediate-effect IFR and stakeholder pushback create some legal and political risk.

CredibilityPartially aligned

Relative to its intended legislative type, this bill is a clear, narrowly scoped administrative directive to the Department of Health and Human Services/FDA that identifies specific regulatory text changes and sets a one-year deadline for issuance of an interim final rule. It integrates tightly with existing law by citing the FD&C Act and enumerating affected CFR sections, and it includes a technical statutory renumbering.

Contention28/100

All support modernization; liberals emphasize animal welfare and validation.

02 · What it does

Who stands to gain, and who may push back.

Likely benefits vs burdens50% / 50%
Permitting processLikely burdened

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

Likely helped
  • Permitting processClarifies regulatory language to explicitly permit nonclinical testing methods across multiple FDA rules.
  • Potential benefitMay accelerate regulatory acceptance of validated in vitro and in silico methods in submissions.
  • Potential benefitCould reduce reliance on animal testing for safety and efficacy evidence.
Likely burdened
  • Potential burdenMakes the interim rule immediately effective, bypassing normal notice-and-comment procedural safeguards.
  • Potential burdenCould increase perceived safety risk if nonclinical methods replace animal data before sufficient validation.
  • Potential burdenRequires FDA to revise numerous CFR sections within one year, raising implementation workload.
03 · Why people split

Why the argument around this bill splits.

All support modernization; liberals emphasize animal welfare and validation.
Progressive75%

Likely favorable to modernizing nonclinical science and reducing animal testing where validated alternatives exist, while wanting strong safeguards.

Supportive of regulatory updates that reflect scientific advances, but wary of bypassing notice-and-comment and of any weakening of safety standards.

Leans supportive
Centrist65%

Sees the bill as a reasonable regulatory modernization that provides clarity, but has procedural concerns.

Will support if the rulemaking includes clear validation criteria, transparency, and limited procedural risk from immediate effectiveness.

Split reaction
Conservative80%

Generally supportive because it reduces regulatory friction and updates rules to reflect modern science.

Approves of replacing vague terms with clearer language and quicker implementation, though may object to any provision weakening safety.

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 likelihood60/100

Targeted regulatory alignment typically clears Congress, but immediate-effect IFR and stakeholder pushback create some legal and political risk.

Scope and complexity
24%
Scopenarrow
24%
Complexitylow
Why this could stall
  • Potential legal challenges to immediate-effect interim rule
  • Stakeholder pushback from research or animal welfare groups
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

All support modernization; liberals emphasize animal welfare and validation.

Targeted regulatory alignment typically clears Congress, but immediate-effect IFR and stakeholder pushback create some legal and political…

Unlocked analysis

Relative to its intended legislative type, this bill is a clear, narrowly scoped administrative directive to the Department of Health and Human Services/FDA that identifies specific regulatory text changes and sets a on…

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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