H.R. 4698 (119th)Bill Overview

PAAW Act

Health|Health
Cosponsors
Support
Bipartisan
Introduced
Jul 23, 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

This bill amends the Public Health Service Act to prohibit the Director of the National Institutes of Health (NIH) from conducting or funding any research that causes "significant pain or distress" to a dog or cat. It defines "significant pain or distress" as studies assigned pain category D or E under the USDA Pain and Distress Categories (or successor categories).

Why people may split

Animal welfare vs. scientific freedom: liberals emphasize protecting dogs and cats from painful research; conservatives emphasize preserving NIH discretion to fund scientifically necessary work.

Watch point

Relative to its intended legislative type, this bill is a concise statutory prohibition amending the Public Health Service Act to bar NIH-conducted or -supported research that causes significant pain or distress to dogs or cats, with a clear definitional reference and an applicability date.

This bill amends the Public Health Service Act to prohibit the Director of the National Institutes of Health (NIH) from conducting or funding any research that causes "significant pain or distress" to a dog or cat.

It defines "significant pain or distress" as studies assigned pain category D or E under the USDA Pain and Distress Categories (or successor categories).

The prohibition would take effect 90 days after enactment.

Passage35/100

On content alone the bill is narrowly focused and understandable, which helps its chances relative to sweeping legislation. However, it directly restricts NIH-funded research without enumerated exceptions, likely provoking organized opposition from research institutions and some public-health constituencies; it also lacks compromise mechanisms that facilitate dealmaking. Procedural barriers in the Senate further reduce the probability that a standalone statutory restriction of this nature would be enacted.

CredibilityPartially aligned

Relative to its intended legislative type, this bill is a concise statutory prohibition amending the Public Health Service Act to bar NIH-conducted or -supported research that causes significant pain or distress to dogs or cats, with a clear definitional reference and an applicability date. It identifies the implementing official but leaves substantial operational, enforcement, fiscal, and edge-case detail to be addressed outside the text.

Contention55/100

Animal welfare vs. scientific freedom: liberals emphasize protecting dogs and cats from painful research; conservatives emphasize preserving NIH discretion to fund scientifically necessary work.

02 · What it does

Who stands to gain, and who may push back.

Likely benefits vs burdens50% / 50%
Federal agenciesLikely burdened

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

Likely helped
  • Potential benefitReduces the use of NIH funds for studies that cause substantial pain or distress to dogs and cats, directly decreasing…
  • Federal agenciesMay increase public trust in federally funded biomedical research by responding to ethical concerns about painful anima…
  • Potential benefitCreates an incentive for researchers to accelerate development and adoption of non-animal or less-painful alternative m…
Likely burdened
  • Potential burdenRestricts types of translational and veterinary research NIH can fund (including certain disease models, surgical or pa…
  • Potential burdenCould shift research using painful dog/cat procedures to other funders, private-sector labs, or foreign institutions wh…
  • Potential burdenGenerates administrative and compliance burdens for NIH and applicant institutions as grants, protocols, and contracts…
03 · Why people split

Why the argument around this bill splits.

Animal welfare vs. scientific freedom: liberals emphasize protecting dogs and cats from painful research; conservatives emphasize preserving NIH discretion to fund scientifically necessary work.
Progressive65%

A mainstream progressive would likely view the bill as a meaningful animal-welfare protection that reduces ethically troubling uses of companion animals in painful experiments.

They would weigh that benefit against potential impacts on biomedical research, and would be attentive to whether the ban blocks narrowly necessary, life‑saving studies.

Overall they would tend to favor stronger protections for dogs and cats but may want safeguards to preserve crucial medical progress where no alternatives exist.

Split reaction
Centrist50%

A moderate would see the bill as balancing public concern about animal cruelty with potential costs to biomedical research, but would be wary of a blanket ban without exception or transition.

They would look for empirical evidence of how many NIH projects would be affected and seek mechanisms (sunset, waivers, or reviews) to prevent unintended damage to important public‑health work.

Split reaction
Conservative30%

A mainstream conservative would be skeptical of a statutory ban that constrains the scientific discretion of NIH and could blunt U.S. competitiveness in biomedical research.

They might welcome the focus on avoiding wasteful spending, but overall worry this is federal overreach into technical research decisions and could impair development of drugs, devices, or defenses that rely on dog/cat models.

Likely resistant
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 likelihood35/100

On content alone the bill is narrowly focused and understandable, which helps its chances relative to sweeping legislation. However, it directly restricts NIH-funded research without enumerated exceptions, likely provoking organized opposition from research institutions and some public-health constituencies; it also lacks compromise mechanisms that facilitate dealmaking. Procedural barriers in the Senate further reduce the probability that a standalone statutory restriction of this nature would be enacted.

Scope and complexity
24%
Scopenarrow
24%
Complexitylow
Why this could stall
  • The bill text does not include a cost estimate or analysis of how many active NIH projects would be affected, making it uncertain how large the practical impact on NIH-funded research would be.
  • It is unclear whether the USDA pain-category reference (D/E or successors) will be interpreted narrowly or broadly in implementation and enforcement, leaving legal and administrative scope uncertain.
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

Animal welfare vs. scientific freedom: liberals emphasize protecting dogs and cats from painful research; conservatives emphasize preservin…

On content alone the bill is narrowly focused and understandable, which helps its chances relative to sweeping legislation. However, it dir…

Unlocked analysis

Relative to its intended legislative type, this bill is a concise statutory prohibition amending the Public Health Service Act to bar NIH-conducted or -supported research that causes significant pain or distress to dogs…

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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