Sanctuary Cities in Iowa: ICE Detainers, Penalties, and Challenges

Sanctuary cities are not allowed in Iowa. Since 2018, Iowa Code Chapter 27A has barred every city, county, and local agency from adopting any policy, written or unwritten, that limits cooperation with federal immigration enforcement. No Iowa municipality currently operates as a sanctuary jurisdiction, and one that tried would face a complete cutoff of state funding lasting until a court confirms the problem has been fixed.¹

What Counts as a Sanctuary Policy Under Iowa Law

Chapter 27A defines “policy” broadly. Formal ordinances and council resolutions count. So do internal police memos, department manuals, and verbal instructions from a supervisor. If the effect is to discourage or prevent cooperation with federal immigration authorities, the format does not matter.¹

The statute lists specific activities a local entity cannot block its officers from doing during a lawful detention or arrest:

Asking a lawfully detained or arrested person about immigration status.
Sending, receiving, maintaining, or exchanging immigration-related information with ICE, U.S. Citizenship and Immigration Services, or other government entities.
Assisting federal immigration officers as reasonable or necessary, including direct enforcement help.
Allowing federal immigration officers to enter local jails and detention facilities to conduct enforcement activities.

The law reaches every “local entity” in the state: the governing body of any city or county, along with individual officers and employees, sheriffs, police departments, and city and county attorneys.² Every state and local law enforcement agency was required to put any unwritten immigration policies in writing by January 1, 2019, and to conform those policies to Chapter 27A.¹

Section 27A.6 also prohibits considering race, skin color, language spoken, or national origin while enforcing immigration laws, except to the extent permitted by the U.S. and Iowa constitutions. Moving traffic violations are excluded from the definition of “public offense,” so a routine traffic stop alone cannot trigger an immigration inquiry under the statute.¹

Mandatory Compliance With ICE Detainer Requests

The strongest teeth in Chapter 27A involve immigration detainers. Section 27A.2 requires any Iowa law enforcement agency holding a person subject to an ICE detainer to “fully comply with any instruction made in the detainer request and in any other legal document provided by a federal agency.”¹ There is no local discretion.

A detainer is a written notice from ICE asking a local facility to hold a person up to 48 additional hours beyond the normal release time, giving federal agents a chance to take custody.³ ICE itself describes detainers as requests that “don’t impose any obligations on law enforcement agencies.”⁴ Iowa law overrides that at the state level by making compliance mandatory.

One detail cuts both ways. Iowa’s statute only recognizes a detainer that arrives with a properly completed DHS Form I-200 (arrest warrant) or Form I-205 (warrant of removal), signed by an authorized ICE officer.² A detainer that shows up without the required paperwork does not trigger the state-law duty to hold the person.

How a Sanctuary Policy Gets Challenged

Chapter 27A is enforced by complaint, not by ongoing state monitoring. Any person, including a federal agency, can file a complaint with the Iowa Attorney General alleging that a local entity is violating the law. The complaint must include supporting evidence, and the local entity has to turn over any documents the Attorney General requests during review.¹

A complaint is valid only if the Attorney General determines the violation was intentional. Accidental noncompliance or clerical errors that are promptly corrected fall outside the enforcement mechanism. Once a complaint is validated, the timeline runs fast:

Within 10 days, the Attorney General sends written notification by certified mail describing the complaint and warning that a civil action will follow if the entity does not come into compliance.
Within 30 days of that notice, the local entity must produce copies of all immigration enforcement policies, every detainer request received, every response sent, a description of corrective actions taken or planned, and any evidence refuting the complaint.
Within 40 days of the notification, if the violation has not been corrected, the Attorney General files a civil action in district court to enjoin the ongoing violation.⁵

That 30-day window is a genuine chance to cure the problem before litigation begins. Move quickly, eliminate the offending policy, and litigation can be avoided. Miss the 40-day mark and the Attorney General has no discretion to stand down.

What a Violation Costs a City or County

A court finding of intentional violation triggers the central penalty: a complete loss of state funds. The local entity, and every entity under its jurisdiction, becomes ineligible to receive any state funds for each fiscal year that begins after the final judicial determination.⁶ The cutoff is not capped at one fiscal year. It continues until eligibility is formally reinstated under Section 27A.10, so a local government that resists compliance could lose funding across multiple budget cycles.

The scope is broad. It covers state grants, shared revenues, and funding for public safety and general municipal operations across every state agency. The one exception is funding designated for body armor used by law enforcement, which cannot be denied even during a cutoff.⁶ The Iowa Department of Management implements the denial uniformly across all state agencies that send money to local governments.

Protections for Victims, Witnesses, and People Reporting Crimes

The ban on sanctuary policies does not reach every interaction between local officers and immigrants. Section 27A.7 prohibits a local entity or its employees from asking for or collecting information from a victim, witness, or person reporting a crime that is not directly pertinent to the investigation, including their national origin.¹ The statutory definition of “lawful detention” also excludes situations where the only reason a person is being held is that they are a victim, witness, or crime reporter.² The immigration-inquiry authority Chapter 27A protects for officers applies to lawful detentions and arrests, not to someone reporting a burglary or a domestic assault.

Related Iowa Immigration Measures

287(g) Cooperation With ICE

Iowa has gone beyond Chapter 27A’s baseline by entering into a federal cooperation agreement. Under Section 287(g) of the Immigration and Nationality Act, ICE can delegate limited immigration enforcement functions to state and local agencies that sign a Memorandum of Agreement.⁷ In March 2025, the Iowa Department of Public Safety signed a Task Force Model agreement with ICE, allowing trained state officers to carry out certain immigration enforcement duties during routine police work.⁸ Participating officers must be U.S. citizens, pass a federal background investigation, have at least two years of law enforcement experience, and complete ICE-funded training.

The 2024 Illegal Reentry Law Remains Blocked

In 2024, Iowa enacted Senate File 2340, creating a state-level crime for unauthorized reentry. A person previously deported or removed and found in Iowa would commit an aggravated misdemeanor carrying up to two years in prison, with penalties escalating to a Class D felony for prior drug or violent misdemeanor convictions and a Class C felony if the original removal followed a felony conviction. Deferred judgments and suspended sentences are not available. The law also bars arrests under this statute on the grounds of a school, church or place of worship, healthcare facility, or facility providing forensic exams to sexual assault survivors.⁹

SF 2340 has not taken effect. A federal district court issued a preliminary injunction blocking enforcement, and in October 2025 the U.S. Court of Appeals for the Eighth Circuit affirmed that injunction. Iowa Attorney General Brenna Bird has announced plans to seek U.S. Supreme Court review. The law remains unenforceable while that process plays out.¹⁰

1
Iowa Legislature. Iowa Code Chapter 27A – Enforcement of Immigration Laws
2
Iowa Legislature. Iowa Code 27A.1 – Definitions
3
U.S. Immigration and Customs Enforcement. DHS Form I-247 – Immigration Detainer – Notice of Action
4
Immigration and Customs Enforcement. Immigration Detainers
5
Iowa Attorney General. Iowa Code Chapter 27A – Local Enforcement of Federal Immigration Laws Complaint Process and Form
6
Iowa Legislature. Iowa Code 27A.9 – Denial of State Funds
7
Immigration and Customs Enforcement. Delegation of Immigration Authority Section 287(g) Immigration and Nationality Act
8
U.S. Immigration and Customs Enforcement. 287(g) MOA – Iowa Department of Public Safety
9
LegiScan. Iowa SF2340 – 90th General Assembly
10
Iowa Appeals. Iowa AG Plans to Seek U.S. Supreme Court Review of Injunction Blocking Enforcement of States Immigration Law