Massachusetts 2025-2026 Regular Session

Massachusetts Senate Bill S1122

Introduced
2/27/25  
Refer
2/27/25  

Caption

Relative to immigration detention and collaboration agreements

Summary

S1122 would add a new section to Chapter 6 of the Massachusetts General Laws to prohibit state and local public entities from entering into, extending, or renewing certain agreements with federal immigration authorities. The bill defines two main categories of prohibited arrangements: “immigration collaboration agreements,” which would grant federal immigration enforcement authority or powers to a covered entity, and “immigration detention agreements,” which would allow a covered entity to arrest, detain, or house a person for civil immigration detention. The bill applies broadly to the Commonwealth, law enforcement agencies, and counties, cities, towns, districts, and authorities, including police departments, sheriff’s departments, campus police, hospital police, the Department of Corrections, the Massachusetts State Police, and the Department of Youth Services. Existing collaboration agreements would have to be terminated within 30 days of the act’s effective date, and existing detention agreements within 90 days. The Attorney General would be authorized to seek injunctive relief to stop violations, and private actions would also be allowed to the extent otherwise permitted by law.

Impact

If enacted, the bill would significantly limit state and local participation in federal immigration enforcement and civil immigration detention in Massachusetts. It would bar new 287(g)-type collaboration arrangements and similar detention contracts, require the winding down of existing agreements, and create enforcement authority for the Attorney General and potentially private litigants. The measure would affect a wide range of public agencies and local governments that currently work with federal immigration authorities or house detainees under intergovernmental arrangements.

Sentiment

No committee transcript or recorded vote information is available in the provided materials, so there is no documented floor or committee sentiment to summarize. Based on the bill text and sponsorship, the measure appears to reflect a policy preference for limiting local cooperation with federal immigration detention and enforcement, framed as an issue of state sovereignty and control over local law enforcement resources.

Contention

The central point of contention is likely to be whether Massachusetts should prohibit or restrict cooperation with federal immigration enforcement, especially through agreements that delegate enforcement authority or provide detention space. Supporters would likely view the bill as protecting immigrants, limiting local entanglement in federal civil immigration enforcement, and asserting state sovereignty. Opponents would likely argue that it could reduce cooperation with federal authorities, constrain law enforcement discretion, and interfere with existing detention and public safety arrangements. No specific named objections or endorsements are included in the provided record.

Companion Bills

MA H5316

Replaced by Promoting rule of law, oversight, trust and equal constitutional treatment

Previously Filed As

MA H1588

Relative to immigration detention and collaboration agreements

MA S1127

Ensuring access to equitable representation in immigration proceedings

MA H3386

Relative to educational collaboratives

MA H261

Relative to supported decision-making agreements for certain adults

MA H1954

Ensuring access to equitable representation in immigration proceedings

MA S368

To reduce exclusionary discipline for grooming and dress code violations

MA S2286

Establishing a Zero Carbon Renovation Fund

MA S1124

To remove collateral consequences and protect the presumption of innocence

MA H691

Relative to the long-term fiscal health and sustainability of special education in the Commonwealth

MA H138

Relative to the definition of livestock

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