HB 4664 Michigan House · 2025-2026 Regular Session

Civil rights: speech and assembly; blocking a state highway while participating in an assembly of individuals; prohibit, and provide for a misdemeanor. Amends sec. 676b of 1949 PA 300 (MCL 257.676b).

HB 4664 prohibits blocking state highways during assemblies of individuals, amending Michigan's existing traffic law (MCL 257.676b). It directly affects protesters or assembly participants who obstruct highway traffic, making such obstruction a misdemeanor offense. The key provision adds a specific penalty for blocking highways while engaging in group assemblies, moving beyond general traffic violations. This law clarifies that highway obstruction during protests is a criminal act, not merely a traffic infraction.

Issues: ✗ Criminal Justice

Bill status passed both 4 of 5 stages cleared

Introduction

Jun 2025

Committee Review

Sep 2025

House Passage

Sep 2025

Senate Passage

Sep 2025

Governor

Introduced Jun 17, 2025 Last action Sep 18, 2025

Maddy AI version diff · 2 comparisons

What changed between versions

As Passed by the House → Substitute (H-1) · 3 edits

MINOR

The bill text shows minor formatting and spacing adjustments rather than substantive policy changes. The main differences involve reformatting the header information, adjusting spacing around the enacting clause, and updating document tracking numbers and page identifiers. No new laws, penalties, or procedures were added or removed.

TECHNICAL

Header formatting and spacing adjustments throughout the document

Updated document tracking identifiers and page numbers

Minor spacing changes around the enacting clause

Floor votes · House Sep 16, 2025

How they voted

This bill passed the Senate by voice vote (no roll call recorded).

Full legislative history

Actions timeline

Total actions

Key actions

Committee

Sep 18, 2025

Committee

REFERRED TO COMMITTEE ON CIVIL RIGHTS, JUDICIARY, AND PUBLIC SAFETY

upper

Sep 18, 2025

Upper · Passed

PASSED BY HOUSE WITH IMMEDIATE EFFECT

upper

Sep 16, 2025

Lower · Passed

passed; given immediate effect Roll Call #205 Yeas 61 Nays 42 Excused 0 Not Voting 7

lower

Sep 9, 2025

Lower · Passed

substitute (H-1) adopted

lower

Aug 27, 2025

Committee

referred to second reading

lower

Aug 27, 2025

Lower · Passed

reported with recommendation with substitute (H-1)

lower

Jun 17, 2025

Committee

referred to Committee on Judiciary

lower

Jun 17, 2025

Introduced

introduced by Representative Rep. Alicia St. Germaine

lower

1 primary · 32 co-sponsors