HB 178 Montana House · 2025 Regular Session

Limit government use of AI systems

HB 178 limits the use of artificial intelligence (AI) systems by state and local government entities and officers. The bill prohibits AI use for cognitive behavioral manipulation, unlawful discrimination, deceptive purposes, and most public space surveillance, with specific exceptions. It requires government entities to disclose when AI-produced material is published without human review or when an AI system is used in public interfaces. Additionally, any AI recommendation or decision that could impact a person's rights, duties, or privileges must be reviewed and can be modified or rejected by a trained human in a responsible position.
Bill status signed all 5 stages cleared
Introduction
Jan 2025
Committee Review
Mar 2025
House Passage
Apr 2025
Senate Passage
Apr 2025
Signed into Law
May 2025
Introduced Jan 10, 2025 Signed May 8, 2025
Maddy AI version diff · 7 comparisons

What changed between versions

HB0178_3(11).pdf HB0178_X.pdf · 3 edits
MINOR
The bill was converted from a draft version to an enrolled, enacted law. The substantive policy content remains identical, but the formatting was standardized to remove internal markup symbols (like brackets and capitalization for emphasis) and added official certification signatures.
Scope change
The scope of applicability and all policy requirements remain unchanged; only the document status changed from draft to final law.
TECHNICAL

Removed internal drafting symbols (e.g., [sections 1 through 4]) and standardized capitalization in definitions and section titles.

Added official certification text and signature lines for the Chief Clerk, Speaker of the House, and President of the Senate.

Corrected minor spacing and alignment inconsistencies in the header and section numbering.

Floor votes · Senate Mar 27, 2025 · House Apr 11, 2025

How they voted

500
Passed
Total votes 50
Mar 27, 2025
D Democratic18
18 Yea
100% Yea
R Republican32
32 Yea
100% Yea
Vote distribution
All Yea All Nay Mixed No data
Full legislative history

Actions timeline

Total actions
41
Key actions
9
Committee
6
Amendments
1
May 5, 2025
Signed into law
(H) Signed by Governor
lower
Apr 25, 2025
Upper · Passed
(S) Signed by President
upper
Apr 23, 2025
Lower · Passed
(H) Signed by Speaker
lower
Apr 11, 2025
House · Passed
House Vote: pass (96-3-1)
house
Mar 28, 2025
Introduced
(S) Returned to House with Amendments
upper
Mar 27, 2025
Senate · Passed
Senate Vote: pass (50-0)
senate
Mar 21, 2025
Upper · Passed
(S) Committee Report - (S) Energy, Technology & Federal Relations
upper
Mar 20, 2025
Upper · Passed
(S) Committee Executive Action - (S) Energy, Technology & Federal Relations
upper
Feb 14, 2025
Committee
(S) Referred to Committee - (S) Energy, Technology & Federal Relations
upper
Feb 3, 2025
Lower · Passed
(H) Committee Report - (H) Judiciary
lower
Feb 3, 2025
Lower · Passed
(H) Committee Executive Action - (H) Judiciary
lower
Jan 13, 2025
Committee
(H) Referred to Committee - (H) Judiciary
lower
Jan 10, 2025
Introduced
(H) Introduced
lower
1 primary · 0 co-sponsors

Sponsors

Role
Legislator
Party
State
District
P
Photo of Braxton Mitchell
Braxton Mitchell
RRepublican
MT
5