HB 371 Montana House · 2025 Regular Session

Ban mRNA vaccinations in Montana for humans

House Bill 371 aimed to prohibit the administration of gene-based vaccines, including those using messenger RNA (mRNA) or deoxyribonucleic acid (DNA) technology, to humans within the state of Montana. The bill proposed that anyone providing or administering such a vaccine would be guilty of a misdemeanor, facing a $500 fine for each incident. It also required the relevant licensure board to review the license of any professional who violated this prohibition. This legislation would directly affect healthcare providers and individuals seeking these specific types of vaccines in Montana.
Bill status died 2 of 4 stages cleared
Introduction
Jan 2025
Committee Review
Feb 2025
House Failed
Feb 2025
Governor
Introduced Jan 31, 2025 Last action May 20, 2025
Maddy AI version diff · 4 comparisons

What changed between versions

HB0371_1(5).pdf HB0371_2.pdf · 3 edits
MINOR
The bill was amended to narrow its scope by changing the title and text to specifically prohibit only 'gene-based vaccines for infectious diseases' rather than all gene-based vaccines. This change adds a specific exemption for gene therapy products used to treat cancer or genetic disorders, which were previously included in the ban. The amendment also clarifies the definition of the prohibited vaccines to explicitly list mRNA and related technologies while excluding therapeutic gene treatments.
Scope change
The bill's scope was narrowed from a broad ban on all gene-based vaccines to a specific ban only on those used for infectious diseases, explicitly exempting gene therapies for cancer and genetic disorders.
SCOPE

The bill title and text were changed to restrict the ban to 'gene-based vaccines for infectious diseases' instead of all gene-based vaccines.

DEFINITION

A new definition was added clarifying that 'gene-based vaccine for infectious diseases' includes mRNA and related technologies but explicitly excludes gene therapy products used to treat cancer or genetic disorders.

ELIGIBILITY

The exemption for gene therapies treating cancer or genetic disorders was added, meaning these treatments are no longer subject to the ban.

Floor votes · House Feb 19, 2025

How they voted

3466
Failed
Total votes 100
Feb 19, 2025
D Democratic42
42 Nay
100% Nay
R Republican58
34 Yea 24 Nay
58% Yea
Vote distribution
All Yea All Nay Mixed No data
Full legislative history

Actions timeline

Total actions
23
Key actions
2
Committee
3
Feb 19, 2025
Vote failed
House Vote: fail (34-66)
house
Feb 12, 2025
Lower · Passed
(H) Committee Report - (H) Judiciary
lower
Feb 12, 2025
Lower · Passed
(H) Committee Executive Action - (H) Judiciary
lower
Feb 3, 2025
Committee
(H) Referred to Committee - (H) Judiciary
lower
Jan 31, 2025
Introduced
(H) Introduced
lower
1 primary · 0 co-sponsors

Sponsors

Role
Legislator
Party
State
District
P
Photo of Greg Kmetz
Greg Kmetz
RRepublican
MT
36