State-by-state sanctuary policy guides help explain how immigration enforcement cooperation differs across the United States in 2026. States and cities continue to adopt laws and directives that define when local agencies may work with federal immigration authorities, shaping detention practices, information sharing, and policing strategies nationwide.
There is no single federal definition of a sanctuary jurisdiction. Instead, policies exist through state laws, attorney general directives, and local ordinances. As of 2026, the country remains divided between states that limit cooperation with federal immigration enforcement and those that require it.
Understanding sanctuary policies
Sanctuary policies set boundaries for how local law enforcement interacts with federal immigration agencies. These policies do not block federal enforcement. Federal authorities retain the power to enforce immigration law in every state.
Common policy features include:
- Limits on holding individuals based only on immigration detainer requests
- Restrictions on sharing personal information or release dates
- Guidance that discourages officers from asking about immigration status in routine policing
- Cooperation allowances for serious criminal investigations
Supporters say these rules strengthen community trust and improve crime reporting. Opponents argue they create enforcement gaps and uneven rules across the country.
States with broad statewide sanctuary frameworks
Several states have adopted statewide measures that restrict local participation in federal immigration enforcement.
California
California continues to operate the most extensive statewide sanctuary framework. State law limits when local agencies may transfer individuals to federal immigration authorities and restricts use of local resources for immigration enforcement outside defined circumstances.
Key provisions include:
- Standards governing jail transfers to federal authorities
- Rules limiting information sharing
- Transparency requirements regarding federal access to detention facilities
Major cities such as Los Angeles and San Francisco maintain additional local protections.
Illinois
Illinois maintains statewide protections that prevent detention solely on immigration detainers. Agencies follow rules separating routine policing from immigration enforcement activities.
Chicago’s local ordinances reinforce these statewide standards.
New Jersey
New Jersey continues to enforce a statewide directive restricting most voluntary cooperation with federal immigration enforcement. The directive focuses on limiting data sharing and routine participation while allowing cooperation in specific criminal matters.
Oregon
Oregon remains one of the earliest states to restrict local enforcement of federal immigration law. State law prohibits use of local resources for immigration enforcement except where required by law.
Washington
Washington law establishes clear limits on detention cooperation and information sharing. Agencies must publish written policies explaining how they interact with federal immigration authorities.
States that prohibit sanctuary policies
Some states require local agencies to cooperate with federal immigration enforcement and restrict sanctuary measures.
Texas
Texas maintains strict requirements mandating cooperation with immigration detainer requests in many situations. State law prevents local governments from adopting policies that limit cooperation.
Local officials may face penalties for noncompliance.
Florida
Florida law requires local law enforcement agencies to support federal immigration enforcement and bars sanctuary policies. Agencies must comply with detainer requests and participate in designated federal partnership programs.
Tennessee
Tennessee prohibits sanctuary policies statewide and allows enforcement actions against jurisdictions that restrict cooperation with federal immigration authorities.
Iowa
Iowa requires compliance with immigration detainers and discourages policies that limit cooperation between local agencies and federal authorities.
States with mixed or local sanctuary approaches
In several states, sanctuary rules exist mainly at the city or county level rather than through a single statewide law.
Examples include:
- Colorado: State law limits detention based on detainers without judicial warrants, while local jurisdictions adopt additional policies.
- Massachusetts: Statewide rules remain legally complex, but cities such as Boston maintain sanctuary-style policies.
- New York: State agencies operate under limits on cooperation, and New York City maintains extensive local protections.
- Pennsylvania: Policies vary widely across counties, creating a patchwork enforcement landscape.
This variation means immigration enforcement practices differ significantly even within the same state.
Recent developments influencing 2025–2026 policy
The sanctuary policy landscape continues to evolve through legislation, executive directives, and court rulings.
Confirmed national trends include:
- Ongoing state legislation clarifying detainer standards and data-sharing rules
- Continued use of optional federal-local partnership programs
- Legal disputes over state authority and federal immigration powers
- Immigration and border policy debates driving state legislative proposals
Courts remain central in determining how detention requests and information sharing must be handled.
Key differences across states
State-by-state sanctuary policy guides highlight that the term “sanctuary” covers a wide range of legal approaches.
Major differences include:
- Whether detainer requests must be honored
- Limits on sharing personal or booking information
- Rules governing federal access to local detention facilities
- Officer guidance on immigration questioning
Because these rules vary, enforcement experiences depend heavily on location.
Effects on law enforcement and communities
Police leaders in sanctuary jurisdictions often emphasize trust. Agencies say separating immigration enforcement from routine policing encourages witnesses and victims to cooperate.
Officials in anti-sanctuary states argue required cooperation improves coordination and allows faster identification of individuals with criminal records.
Policy debates continue at state legislatures, reflecting different public safety priorities.
Why state-by-state guides matter now
State-by-state sanctuary policy guides are increasingly important because immigration enforcement decisions often depend on local law. Residents, attorneys, and policymakers rely on these guides to understand practical rules affecting detention and cooperation.
They clarify:
- When local agencies may hold someone for immigration authorities
- How information sharing works
- What limits apply to local police involvement
- How policies differ between jurisdictions
As immigration policy remains a central national issue in 2026, understanding these differences is essential.
Sanctuary policy rules continue to change — share your thoughts or check back for updates as states revise their laws.