HB 4045 Michigan House · 2025-2026 Regular Session

Civil procedure: civil actions; lawsuits for exercising rights to free expression; provide protections against. Creates new act.

HB 4045 creates a new legal defense to protect individuals and organizations from lawsuits targeting their exercise of free speech, particularly in public discourse. The bill establishes a process allowing courts to quickly dismiss frivolous civil cases filed against people speaking on matters of public concern, such as protests, social media posts, or community advocacy. This directly affects activists, journalists, and ordinary citizens who face legal threats for expressing views on issues like government actions or social justice. The law aims to prevent costly, intimidating lawsuits that could silence public participation without requiring full trials.
Bill status signed all 5 stages cleared
Introduction
Jan 2025
Committee Review
Dec 2025
House Passage
Oct 2025
Senate Passage
Dec 2025
Signed into Law
Dec 2025
Introduced Jan 30, 2025 Signed Dec 31, 2025
Maddy AI version diff · 4 comparisons

What changed between versions

As Passed by the Senate Substitute (H-1) · 1 edit
MINOR
The bill text shows primarily formatting and header changes between the Senate version and the House substitute version. The core legislative content appears unchanged, with only minor adjustments to spacing, line breaks, and document tracking identifiers.
TECHNICAL

Minor formatting adjustments including spacing changes in the title header and document tracking numbers at the bottom of pages.

Floor votes · Senate Dec 18, 2025 · House Oct 22, 2025

How they voted

370
Passed · 1 other
Total votes 38
Dec 18, 2025
D Democratic19
18 Yea 1
94% Yea
R Republican19
19 Yea
100% Yea
Vote distribution
All Yea All Nay Mixed No data
Full legislative history

Actions timeline

Total actions
26
Key actions
8
Committee
7
Amendments
1
Dec 31, 2025
Introduced
filed with Secretary of State 12/23/2025 11:56 AM
lower
Dec 31, 2025
Signed into law
approved by the Governor 12/23/2025 10:26 AM
lower
Dec 18, 2025
Introduced
returned from Senate without amendment
lower
Dec 18, 2025
Upper · Passed
PASSED ROLL CALL # 347 YEAS 36 NAYS 0 EXCUSED 1 NOT VOTING 0
upper
Dec 16, 2025
Upper · Passed
REPORTED BY COMMITTEE OF THE WHOLE FAVORABLY WITHOUT AMENDMENT(S)
upper
Dec 11, 2025
Committee
REFERRED TO COMMITTEE OF THE WHOLE
upper
Dec 11, 2025
Upper · Passed
REPORTED FAVORABLY WITHOUT AMENDMENT 12/10/2025
upper
Oct 28, 2025
Committee
REFERRED TO COMMITTEE ON CIVIL RIGHTS, JUDICIARY, AND PUBLIC SAFETY
upper
Oct 28, 2025
Upper · Passed
PASSED BY HOUSE WITH IMMEDIATE EFFECT
upper
Oct 22, 2025
Lower · Passed
passed; given immediate effect Roll Call #262 Yeas 103 Nays 0 Excused 0 Not Voting 7
lower
Oct 21, 2025
Lower · Passed
substitute (H-1) adopted
lower
Apr 16, 2025
Committee
referred to second reading
lower
Apr 16, 2025
Lower · Passed
reported with recommendation with substitute (H-1)
lower
Jan 30, 2025
Committee
referred to Committee on Judiciary
lower
Jan 30, 2025
Introduced
introduced by Representative Rep. Kara Hope
lower
1 primary · 11 co-sponsors

Sponsors