
The ability of local law enforcement to apprehend undocumented immigrants is a complex issue that varies across different jurisdictions in the United States. While some states and cities have enacted policies to promote cooperation between local law enforcement and immigrant communities, regardless of immigration status, the federal government has also implemented initiatives to facilitate the investigation and arrest of undocumented immigrants by local authorities. For example, the Criminal Alien Program identifies criminal aliens while they are serving sentences, and the 287(g) Program allows ICE to partner with local law enforcement to identify and remove criminal aliens. However, the federal government cannot force local jurisdictions to honor immigration detainers, and sanctuary policies do not prevent the enforcement of state and local criminal laws against immigrants accused of crimes. Ultimately, the authority of local law enforcement to apprehend undocumented immigrants depends on a combination of federal, state, and local laws, as well as specific programs and policies.
| Characteristics | Values |
|---|---|
| Can local law enforcement apprehend undocumented immigrants? | Yes, local law enforcement officers are authorized to arrest and detain undocumented immigrants. |
| Requirements for local law enforcement | Local law enforcement officers must obtain appropriate confirmation from the Immigration and Naturalization Service of the status of the individual. |
| Training | ICE provides training to local law enforcement officers participating in the 287(g) Program. |
| Funding | Local law enforcement agencies located within 100 miles of the border or in "high-impact areas" are eligible for grants from DHS. |
| Sanctuary policies | Sanctuary policies do not conceal or shelter undocumented immigrants, but they can reduce deportations of people with no criminal convictions. |
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What You'll Learn
- Local law enforcement powers to apprehend undocumented immigrants
- Federal statutes authorising local officials to arrest undocumented immigrants
- Immigration and Customs Enforcement (ICE) collaboration with local law enforcement
- Sanctuary policies and their impact on undocumented immigrants
- Rights of undocumented immigrants when interacting with local law enforcement

Local law enforcement powers to apprehend undocumented immigrants
Local law enforcement officers in the United States have some powers to apprehend undocumented immigrants. Subsection 1324(c) of Title 8 specifically authorises state and local officers to enforce criminal laws and make arrests for violations of 8 U.S.C. § 1324. There is also a general federal statute, 18 U.S.C. § 3041, which authorises certain local officials to make arrests for violations of federal statutes.
The Fifth Circuit Court of Appeals has held that 18 U.S.C. § 3041 authorises local officials to issue arrest warrants, which can be executed by law enforcement officers, including state and local officers. Rule 4(a)(1) of the Federal Rules of Criminal Procedure confirms that an arrest warrant can be executed by a local officer.
However, the validity of an arrest without a warrant for a violation of federal law by local peace officers is determined by reference to local law. For example, if applicable state law authorises law enforcement officers to arrest for misdemeanours only if committed in their presence, they would not be authorised to arrest undocumented immigrants for illegal entry unless they witnessed it or knew that the individual had a prior conviction for illegal entry.
In addition, the Illegal Immigration Reform and Immigrant Responsibility Act of 1996 added Section 287(g) to the Immigration and Nationality Act (INA). This authorises US Immigration and Customs Enforcement (ICE) to delegate to state and local law enforcement officers the authority to perform specified immigration officer functions, such as identifying and removing criminal aliens, under the agency's direction and oversight.
The 287(g) Program includes the Task Force Model, which allows law enforcement agencies to enforce limited immigration authority with ICE oversight during their routine police duties. ICE also operates the Jail Enforcement Model, which is designed to identify and process removable aliens with criminal or pending criminal charges who have been arrested by state or local law enforcement agencies.
Some legislative proposals, such as H.R. 842, would have expanded the powers of local law enforcement to apprehend undocumented immigrants. H.R. 842 would have given state and local law enforcement personnel the authority to investigate, identify, apprehend, arrest, detain, or transfer into federal custody aliens within the United States. However, it does not appear that this bill was passed.
Furthermore, some states and cities have adopted sanctuary policies, which are intended to promote trust and cooperation between local law enforcement and communities with sizeable immigrant populations, regardless of immigration status. Sanctuary policies do not prevent the enforcement of state and local criminal laws against immigrants accused of committing crimes. However, they may limit the collection of information on immigration or citizenship status and prohibit local law enforcement from holding individuals on an immigration detainer without a judicial warrant.
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Federal statutes authorising local officials to arrest undocumented immigrants
The authority of local law enforcement to apprehend undocumented immigrants was enacted into law in 1996 in §439 of the Antiterrorism and Effective Death Penalty Act (AEDPA) and §133 and §372 of the Illegal Immigration Reform and Immigrant Responsibility Act of 1996 (IIRIRA). The Department of Homeland Security (DHS) also has several initiatives with state and local law enforcement agencies to facilitate the investigation, arrest, and apprehension of foreign nationals who have violated the law.
H.R. 842 would have given state and local law enforcement personnel the authority to investigate, identify, apprehend, arrest, detain, or transfer into federal custody aliens within the United States. H.R. 4437 would have required designated sheriffs within 25 miles of the southern international border of the US to be reimbursed for costs associated with the transfer of aliens detained or in custody.
Subsection 1324(c) of Title 8 specifically authorises state and local officers "whose duty it is to enforce criminal laws" to make arrests for violations of 8 U.S.C. § 1324. There is also a general federal statute, 18 U.S.C. § 3041, which authorises certain local officials to make arrests for violations of federal statutes. The Fifth Circuit Court of Appeals has held that 18 U.S.C. § 3041 authorises local officials to issue arrest warrants to be executed by law enforcement officers.
§ 1252c provides that state and local law enforcement officials are authorised to arrest and detain an individual who is an alien illegally present in the US and has previously been convicted of a felony in the US, deported, and left the US after such conviction. This is only after local law enforcement officials obtain appropriate confirmation from the Immigration and Naturalisation Service of the individual's status and only for the period required for the Service to take the individual into federal custody for deportation.
In the absence of a specific federal statute, the validity of an arrest without a warrant for violation of federal law by local peace officers is determined by reference to local law. According to Gonzales v. City of Peoria, an alien's inability to produce documentation does not provide probable cause for arrest. However, aliens are issued registration cards and must carry them at all times. Therefore, a law enforcement officer confronting an undocumented alien who cannot produce documentation may have probable cause to believe that a violation of 8 U.S.C. § 1304(e) or 8 U.S.C. § 1325(a) has occurred.
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Immigration and Customs Enforcement (ICE) collaboration with local law enforcement
Immigration and Customs Enforcement (ICE) is a federal law enforcement agency under the US Department of Homeland Security. It was created by President George W. Bush in 2003 following the September 11 attacks. ICE's mission is to protect the US from cross-border crime, illegal immigration, terrorism, and other threats to national security and public safety.
ICE has two primary law enforcement components: Homeland Security Investigations (HSI) and Enforcement and Removal Operations (ERO). HSI focuses on disrupting transnational crime, while ERO is responsible for the apprehension, detention, and removal of undocumented immigrants.
ICE works in collaboration with local law enforcement agencies through the 287(g) program to keep communities safe. Local law enforcement officers whose duty it is to enforce criminal laws are authorized to make arrests for violations of specific federal statutes, such as 8 U.S.C. § 1324 and 18 U.S.C. § 3041. They can also arrest and detain individuals who are illegally present in the US and have previously been convicted of a felony, but only after obtaining confirmation of their status from the Immigration and Naturalization Service.
Additionally, the Criminal Alien Program, established in 1991, facilitates the investigation, arrest, and apprehension of foreign nationals who have violated the law. This program identifies criminal aliens while they are serving their sentences, allowing for efficient processing through the criminal justice system.
ICE has also proposed initiatives to enhance collaboration with local law enforcement. For instance, the Department of Homeland Security (DHS) would provide grants and reimbursements to local law enforcement agencies near the US borders or in "high-impact areas." DHS would also cover costs related to immigration enforcement, including the processing of criminal illegal aliens and the verification of immigration status. These initiatives aim to strengthen the partnership between ICE and local law enforcement agencies to effectively address immigration-related issues.
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Sanctuary policies and their impact on undocumented immigrants
Sanctuary policies, also known as sanctuary city, state, or jurisdiction laws, refer to a variety of laws, policies, or resolutions that limit or define the extent to which local or state governments cooperate with federal authorities in enforcing immigration laws. These policies do not provide legal authority for law enforcement agencies to hold people on immigration detainers, and they do not conceal or shield undocumented immigrants from detection, deportation, or prosecution for criminal activities. Instead, they aim to protect public safety by encouraging immigrants to work with police in reporting and investigating crimes without fear of deportation and allowing local governments to allocate resources effectively.
The term "sanctuary policy" lacks a legal or standard definition, and its specific implications vary across different jurisdictions. Sanctuary policies can take various forms, including laws prohibiting local governments from entering into contracts with the federal government to hold immigrants in detention, preventing the construction of immigrant detention centers, and restricting information sharing about undocumented individuals with federal immigration enforcement officers. Some policies prohibit "287(g)" agreements, which formally deputize state and local law enforcement officers to enforce federal immigration law.
The impact of sanctuary policies on undocumented immigrants is complex and multifaceted. Sanctuary jurisdictions ensure that undocumented immigrants are not unlawfully held on immigration detainers without a judicial warrant, protecting their rights under the Fourth Amendment. Studies have shown that sanctuary cities either have no impact on crime rates or lead to a decrease in crime rates, with undocumented immigrants being less likely to engage in criminal behavior than native-born Americans. Sanctuary policies also foster trust between immigrant communities and law enforcement, as evidenced by a 2021 study finding that Latinos were more likely to report crime victimization to law enforcement in areas with sanctuary policies.
However, opponents of sanctuary policies argue that they hinder local law enforcement's ability to enforce immigration laws effectively. There have been attempts to encourage cooperation between state and local law enforcement and federal immigration authorities. For example, legislative proposals like H.R. 842 aimed to authorize state and local law enforcement to investigate, identify, apprehend, arrest, and detain undocumented individuals. The Department of Homeland Security (DHS) has also initiated programs like the Criminal Alien Program to facilitate the investigation, arrest, and apprehension of undocumented individuals with criminal records.
In conclusion, sanctuary policies have a nuanced impact on undocumented immigrants. While they provide protections against unlawful detention and foster trust between immigrant communities and law enforcement, they also face criticism for potentially hindering the enforcement of immigration laws. The effectiveness of sanctuary policies relies on a delicate balance between federal and local interests in immigration enforcement, with the ultimate goal of protecting the rights and safety of all individuals within a jurisdiction.
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Rights of undocumented immigrants when interacting with local law enforcement
The rights of undocumented immigrants when interacting with local law enforcement are complex and depend on various factors, including the immigrant's status, the nature of the interaction, and the state in which the interaction occurs. Here are some key points to consider:
Rights during Interactions with Law Enforcement
Undocumented immigrants have the right to remain silent and do not have to discuss their immigration or citizenship status with the police, immigration agents, or other officials. They can choose to answer questions only in the presence of an attorney, regardless of their citizenship or immigration status. However, in some states, individuals may be required to provide their name if asked to identify themselves by law enforcement. Additionally, if pulled over while driving, individuals must show their driver's license, vehicle registration, and proof of insurance, but they are not obligated to answer questions about their immigration status.
Rights during Search and Entry
Individuals have the right to refuse consent to a search of their person or belongings without their consent or probable cause. If an individual is on probation with a search condition, law enforcement may enter their home. When immigration officers knock on the door, they must have a warrant signed by a judge to enter. It is advisable to ask officers to show their badge or identification and to inspect any warrants presented.
Rights during Arrest and Detention
Undocumented immigrants have the right to a government-appointed lawyer if arrested, and they should request one immediately. They also have the right to make a private phone call within a reasonable time after their arrest, and the police may not listen if they call a lawyer. If detained by ICE or Border Patrol, individuals have the right to hire a lawyer, but the government is not obligated to provide one. They can request a list of free or low-cost alternatives and have the right to be visited by their lawyer while in detention.
Rights of Children
Undocumented immigrant children have the right to access public education. The Supreme Court ruled in Plyler v. Doe that if citizen children have access to free public education, so should undocumented immigrant children, based on the 14th Amendment's guarantee of equal protection under the laws. Additionally, the Flores settlement requires that facilities holding children meet minimum standards for healthcare, education, recreation, and other childcare services.
Legal Representation and Court Proceedings
Undocumented immigrants facing immigration court proceedings have the right to legal representation. The Sixth Amendment states that "in all criminal prosecutions, the accused shall... have the assistance of counsel for his defense." The Supreme Court has also ruled that the government must appoint an attorney for individuals who cannot afford one. However, the evidentiary standards in immigration court may differ from those in other courts, with hearsay and unauthenticated documents sometimes being admitted as evidence.
Constitutional Protections
Undocumented immigrants in the United States are protected by the Constitution, which guarantees certain rights, including the right to due process under the Fifth Amendment. This applies to deportation proceedings, as affirmed in the 1993 Reno v. Flores Supreme Court case. Additionally, the right to remain silent when questioned or arrested by immigration officers is also protected by the Constitution.
While this provides an overview of some key rights, the specific rights and protections available to undocumented immigrants can vary depending on the jurisdiction and the circumstances of each case. It is always advisable for individuals to consult with legal professionals or immigrant rights organizations for specific guidance.
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Frequently asked questions
Local law enforcement officers are authorized to apprehend undocumented immigrants under the 1996 Illegal Immigration Reform and Immigrant Responsibility Act.
Local law enforcement agencies must partner with ICE Enforcement and Removal Operations (ERO) under the 287(g) program.
Local law enforcement agencies must nominate officers who are U.S. citizens, have passed a background check, and have knowledge of law enforcement activities in their jurisdictions.
Local law enforcement cannot hold people on an immigration detainer without a judicial warrant. They also cannot search an individual or their belongings without consent or probable cause.


















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