SB 508 Michigan Senate · 2025-2026 Regular Session

Law enforcement: other; immigration enforcement at certain locations; prohibit in certain circumstances. Creates new act.

SB 508 prohibits law enforcement officers from checking immigration status or enforcing immigration laws in specific "sensitive locations," including schools, hospitals, places of worship, courthouses, and facilities serving vulnerable groups like children or crime victims. The bill allows exceptions only if a court orders entry or if an immediate threat to public safety requires action. It directly affects state and local law enforcement officers and individuals present at these locations during routine activities. The law creates a new legal framework to limit immigration enforcement in settings where people seek safety or services.

Bill status in committee 1 of 4 stages cleared

Introduction

Aug 2025

Committee Review

Floor Vote

Governor

Introduced Aug 26, 2025 Last action Mar 25, 2026

Maddy AI version diff · 1 comparison

What changed between versions

Senate Introduced Bill → Substitute (S-3) · 5 edits

MODERATE

The bill was renamed to 'Substitute (S-3)' and its title was slightly shortened. The most significant change is a complete rewrite of the definitions and enforcement rules: the term 'Immigration enforcement action' was moved to the definitions section, and the term 'Sensitive location' was replaced with 'Protected area'. The list of protected locations was expanded to include public libraries and health facilities, and the enforcement rule now specifically restricts federal immigration officers from entering nonpublic areas of these locations unless they have a warrant or an emergency exists.

Scope change

The bill's scope was expanded to explicitly include public libraries and health facilities as protected areas, and the restriction now specifically targets federal immigration officers rather than all law enforcement officers.

DEFINITION

The definition of 'Immigration enforcement action' was moved from the enforcement section to the definitions section to clarify that it applies specifically to actions by federal immigration officers.

The term 'Sensitive location' was replaced with 'Protected area', and the list of included locations was updated to include public libraries and health facilities.

A new definition for 'Federal immigration officer' was added to clarify that the restrictions apply to officers paid by or acting as agents of federal immigration and customs agencies.

ENFORCEMENT

The enforcement rule was changed to specifically prohibit federal immigration officers from conducting actions in nonpublic areas of protected locations, with exceptions for valid judicial warrants or exigent circumstances.

TECHNICAL

The bill title was shortened and the document was reclassified as a 'Substitute (S-3)' version.

Floor votes

How they voted

No floor votes recorded yet.

Full legislative history

Actions timeline

Total actions

Key actions

Committee

Mar 25, 2026

Committee

REFERRED TO COMMITTEE OF THE WHOLE WITH SUBSTITUTE (S-3)

upper

Mar 25, 2026

Upper · Passed

REPORTED FAVORABLY WITH SUBSTITUTE (S-3) 3/25/2026

upper

Aug 26, 2025

Committee

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

upper

Aug 26, 2025

Introduced

INTRODUCED BY SENATOR MARY CAVANAGH

upper

1 primary · 9 co-sponsors