A federal judge just handed Boston’s sanctuary city leadership a major win, letting its controversial Trust Act stand—for now—while leaving federal immigration enforcement and public safety hanging in the balance.
Story Snapshot
- A federal judge declined to strike down Boston’s sanctuary-style Trust Act at this stage, allowing the policy to remain in force.
- The Department of Justice argues Boston’s law unlawfully obstructs federal immigration enforcement and violates the Supremacy Clause.
- Boston claims the Constitution protects its choice to withhold local resources from civil immigration enforcement.
- Conservatives now face a deeper fight over whether cities can shield illegal immigrants even when public safety is at risk.
Judge Lets Boston’s Sanctuary Policy Continue While Legal Battle Deepens
In the ongoing case United States v. City of Boston, a federal district judge has allowed Boston’s Trust Act to remain in effect while weighing whether the Department of Justice’s challenge can proceed to a full trial.[3] The Justice Department filed suit in September 2025, arguing that the Trust Act obstructs federal immigration enforcement and violates federal law, including the Supremacy Clause of the Constitution and federal information-sharing statutes.[3][4] The city has asked the judge to dismiss the case outright.[1][6]
Boston’s Trust Act, first enacted in 2014 and later amended, instructs the Boston Police Department not to detain individuals on the basis of civil immigration detainers or administrative immigration warrants once they are otherwise eligible for release, unless federal agents obtain a criminal warrant from a judge.[2][4] The ordinance also restricts use of city money or personnel for civil immigration enforcement tasks, including asking about immigration status, holding people for civil detainers, or transferring individuals to immigration authorities without a judicial order.[4] Supporters frame this as a resource-allocation decision.
What Boston’s Trust Act Does—and Why DOJ Calls It Obstruction
According to the complaint and related filings, the Trust Act directs Boston police to categorically decline federal civil immigration detainer requests, meaning local officers will not hold individuals for up to 48 hours solely so immigration agents can arrest them.[1][2][4] The Justice Department argues this allows deportable offenders to “evade” apprehension and reenter the community after local charges are resolved.[4] Federal lawyers say cities cannot enact policies that discriminate against federal immigration enforcement or single it out for adverse treatment.[4]
The Department of Justice also points to provisions that limit communication and cooperation with federal immigration officers, including restrictions on sharing information such as release dates and personal details solely for civil enforcement purposes.[4] In public messaging, federal officials describe Boston’s policy as “obstructionist” and claim it interferes with the federal government’s ability to enforce immigration law enacted by Congress.[2][4] Conservative critics emphasize that such policies risk releasing individuals accused or convicted of serious crimes back into neighborhoods rather than into federal custody for removal.[4]
City, Allies, and State Officials Lean on the Tenth Amendment
Boston’s legal team counters that federal law does not require cities to participate in civil immigration enforcement and that the Trust Act simply governs how local employees and resources are used.[1][6] The city argues that under the Tenth Amendment anti-commandeering principle, the federal government cannot force state or local officials to carry out federal programs, including civil immigration detainer compliance.[2][5][6] Supporters say Boston still cooperates with federal authorities on criminal and public safety matters, including work with the Homeland Security Investigations arm of immigration enforcement.[2]
Massachusetts Attorney General Andrea Campbell filed a friend-of-the-court brief backing Boston’s motion to dismiss, arguing that the Trust Act is consistent with state and federal law and a lawful exercise of local police powers.[5] Her office cites a 2017 Massachusetts Supreme Judicial Court decision, Lunn v. Commonwealth, which held that state and local officers in Massachusetts have no authority to detain someone solely on the basis of a federal civil immigration detainer.[1][5] According to the attorney general, the Trust Act helps ensure compliance with that state ruling while focusing local police on community safety.[5][6]
Public Safety, Federalism, and What This Means Going Forward
During recent arguments, Boston’s lawyers told the judge that the Justice Department had shown only theoretical harms and had not produced a single concrete example where the Trust Act directly caused federal immigration officers to lose custody of a dangerous individual.[1][6] They emphasized that Boston’s policing resources are directed toward criminal law enforcement, not civil immigration work, and that the ordinance protects that priority.[1][6] City officials and allied advocacy groups argue that trust between immigrant communities and local police improves crime reporting and public safety.
Sounds as dumb & self-damaging to the U.S. as Trump’s “brilliant” tariff policy.
Sanctuary Cities
•Albuquerque, NM
•Berkeley, CA
•Boston, MA
•Chicago, IL
•Denver, CO
•East Lansing, MI
•Hoboken, NJ
•Jersey City, NJ
•Los Angeles, CA
•New Orleans, LA⬇️ More
— WeCanBeHeroes 🇺🇸🇺🇦🇬🇱🇨🇦🇲🇽 (@FourScore_7) May 27, 2026
For conservatives focused on border security and rule of law, the stakes extend beyond Boston. The suit is part of a broader pattern of clashes between sanctuary jurisdictions and the federal government, with similar disputes involving states like California and cities such as Chicago and New York.[2][3] If Boston’s position stands, more progressive cities may feel emboldened to expand noncooperation, further fragmenting national immigration enforcement. If the Justice Department ultimately prevails, cities may face tighter limits on their ability to shield illegal immigrants from federal officers. For now, the judge’s decision to let the Trust Act stand keeps that constitutional confrontation very much alive.
Sources:
[1] Web – Judge allows Boston’s sanctuary policy to stand
[2] YouTube – Mayor Wu says Boston ‘will not yield’ after DOJ sues city …
[3] Web – DOJ sues Boston, Mayor Michelle Wu over sanctuary immigration …
[4] Web – Boston Trust Act – Wikipedia
[5] Web – Department of Justice Sues City of Boston, Mayor Michelle Wu Over …
[6] Web – US v. Boston – Public Rights Project Legal Cases
