When Federal Agents Exceed Their Authority

Over the past year, there have been many incidents of ICE officers ordering U.S. citizens to vacate areas, move their vehicles from public streets, and comply with various commands.  In cases where citizens have refused to comply with these commands, ICE has often resorted to the use of force. But does ICE actually possess the legal authority to issue such commands? A careful examination of federal statutes and court precedents, demonstrates that ICE’s legitimate authority is constrained by significant limitations.

The broader question extends beyond just immigration enforcement to the relationship between citizens and any federal agency with a specialized mandate. When an officer of an agency that was created for a specific purpose begins to operate outside that mandate, he has left his realm of authority and is acting only as a private citizen. Discovering where ICE's authority ends is not just an academic exercise. It can also help guide citizens who may encounter federal agents during their daily activities. The legal framework governing these encounters is based on constitutional principles about the limits of governmental power and the rights that citizens retain even in the presence of law enforcement.
 
The Statutory Foundation
 
Federal law establishes ICE's authority through Title 8 of the United States Code, specifically section 1357, which grants immigration officers certain enforcement powers. When we read through this statute, we can see a consistent pattern of limitation. For example, subsection (a)(1) grants ICE officers the power "to interrogate any alien or person believed to be an alien as to his right to be or to remain in the United States." Congress did not grant ICE authority to interrogate anyone they wanted but specifically restricted ICE’s interrogation authority to aliens and those believed to be aliens. This distinction excludes United States citizens. ICE has no authority whatsoever to interrogate citizens.
 
The arrest authority in subsection (a)(2) continues this pattern by permitting officers "to arrest any alien" who enters unlawfully or is believed to be unlawfully present and likely to escape before a warrant can be obtained. Again, the statute uses "alien" rather than "person," creating a categorical boundary around the power thus granted.
 
When Congress wanted to extend authority beyond aliens, it did so explicitly, as seen in subsections (a)(4) and (a)(5) regarding criminal arrests. These provisions allow arrest of "persons" who commit federal offenses but only if the officer is an eyewitness of the crime or the crime is serious enough to be considered a felony.  However, this authority is specifically limited to federal crimes. ICE has no authority to make arrests for violations of state and local laws such as traffic laws or laws governing public assemblies. This means ICE can arrest a United States citizen who commits a federal crime such as harboring unauthorized aliens, but their authority does not extend to general law enforcement.
 
Nowhere in the statutory framework does Congress grant ICE the authority to give orders to bystanders, establish exclusion zones, or direct persons who are not suspected of violating immigration laws. These are considered general police powers, and they fall within the scope of state and local authorities. If ICE officers want a street cleared of protesters or bystanders, they must rely on local and state forces for the execution of police functions outside of their mandate.
 
Regulatory Standards
 
The Code of Federal Regulations at Title 8, Part 287 also limits ICE’s authority. Section 287.8(b)(1) states that "An immigration officer, like any other person, has the right to ask questions of anyone as long as the immigration officer does not restrain the freedom of an individual, not under arrest, to walk away." This explicitly confirms what many Americans already assume to be true. Those not under arrest must be allowed to leave whenever they feel like it. An ICE officer approaching someone on the street has no more authority to restrict that individual’s movements than any private citizen would have.
 
The regulations governing use of force impose further constraints that protect uninvolved parties. Section 287.8(a)(1)(iii) requires officers to "always use the minimum non-deadly force necessary to accomplish the officer's mission" and to escalate force "only when such higher level of force is warranted by the actions, apparent intentions, and apparent capabilities of the suspect, prisoner, or assailant." The regulation's focus on suspects, prisoners, and assailants suggests no authorization for applying force against individuals who are not committing federal crimes. When officers use force against persons who are either observing/recording operations or declining to comply with commands, the officers are operating outside the boundaries these regulations establish. ICE officers are prohibited from escalating the use of force against anyone except suspects, prisoners, or assailants.

The arrest standards in section 287.8(c)(i) further provide that "an arrest shall be made only when the designated immigration officer has reason to believe that the person to be arrested has committed an offense against the United States or is an alien illegally in the United States." This provision excludes arrests of United States citizens who have committed no federal crime, regardless of whether they refuse to comply with officer commands during immigration operations. The regulatory framework thus reinforces what the statutes establish. ICE's authority extend to aliens and suspected aliens, federal crimes personally witnessed, and federal felonies. ICE has no authority over the general citizenry who happen to be present during enforcement operations.
 
Supreme Court Precedent
 
The constitutional boundaries of immigration enforcement have been tested in several Supreme Court. United States v. Brignoni-Ponce, decided in 1975, addressed roving Border Patrol stops and established that officers cannot stop vehicles when "the only ground for suspicion is that the occupants appear to be of Mexican ancestry." The Court emphasized that "Assuming that Congress has the power to admit aliens on condition that they submit to reasonable questioning about their right to be in the country, such power cannot diminish the Fourth Amendment rights of citizens who may be mistaken for aliens." This principle applies broadly to all immigration enforcement activities. Officers must have "specific articulable facts" to justify stops, and the mere possibility that someone might be an alien does not suffice.
 
Immigration and Naturalization Service v. Delgado, decided in 1984, examined factory surveys where officers questioned workers about immigration status. The Court held that these encounters did not constitute Fourth Amendment seizures of the entire workforce, but the operative standard confirmed that persons remain free to walk away during routine immigration operations. The court established that these surveys were only permissible if "a reasonable person would not have reason to believe that he could not leave the questioning." This standard places the burden on the government to demonstrate that any detention was justified. The mere presence of a federal officer does not create a duty to comply.
 
United States v. Martinez-Fuerte, decided in 1976, permitted checkpoint stops without individualized suspicion but carefully limited them to "a brief detention" requiring "a response to a brief question or two." The Court stated explicitly that "any further detention or search must be based on consent or probable cause." Even in the checkpoint context, where Fourth Amendment standards relax somewhat, officers cannot extend encounters beyond narrow limits without providing specific justification.
 
When Citizens Have Been Wrongfully Detained
 
Federal courts have repeatedly found Fourth Amendment violations when ICE detains United States citizens based on insufficient evidence of alienage. In Gonzalez v. ICE, the Central District of California issued a permanent injunction after finding that ICE violated constitutional rights by issuing detainers "based on evidence of a person's foreign place of birth and the absence of information about a person's citizenship or immigration status in federal databases." The named plaintiff, Gerardo Gonzalez, was a natural born United States citizen born in California who was wrongfully detained. The court's injunction demonstrates that mere suspicions about citizenship cannot be used to justify detaining actual citizens.
 
Brown v. Ramsay, decided in the Southern District of Florida in 2025, presents another example where the court held that Peter Sean Brown's Fourth Amendment rights were violated when he was detained on an ICE "incorrectly identified Mr. Brown as a deportable Jamaican immigrant." The court found that ICE "lacked probable cause to issue the detainer in the first place." Similarly, in Morales v. Chadbourne, decided in the District of Rhode Island in 2017, the court described the detention of naturalized United States citizen Ada Morales as revealing "dysfunction of a constitutional proportion" as a result of which "a United States citizen lost her liberty due to a baseless immigration detainer."
 
These cases establish an important principle: ICE cannot detain citizens based on mere suspicion. The Fourth Amendment requires probable cause for arrests. When an officer lacks this individualized justification, the arrest of an American citizen is a violation constitution regardless of the officers' good faith beliefs. The Third Circuit's decision in Galarza v. Szalczyk clarified that ICE detainers are voluntary requests rather than mandatory orders, and courts have consistently held that compliance with such requests without independent probable cause violates the Fourth Amendment.
 
Bystanders, Journalists, and First Amendment Concerns
 
Recent litigation has addressed ICE authority over bystanders and journalists during enforcement operations with results that further confirm these limitations. In litigation regarding the Chicago ICE facility decided in the Northern District of Illinois in 2025, Judge Sara Ellis issued findings that "federal agents have used excessive force in response to protesters' and journalists' exercise of their First Amendment rights, without justification, often without warning." The court held that the presence of "unruly individuals" among "peaceful protestors, journalists and legal observers does not give Defendants a blank check to employ unrestricted use of crowd control weapons." This decision confirms that even during immigration enforcement operations, the constitutional rights of observers and protesters must be observed.
 
A case involving journalists in the Central District of California in 2025 reached similar conclusions, with the court finding that "federal agents' indiscriminate use of force will undoubtedly chill the media's efforts to cover these public events and protesters seeking to express peacefully their views on national policies." The First Amendment protects the right to observe and record government officials performing their duties in public spaces.
 
There is an obvious tension between ICE's desire to control the environment during enforcement operations and the constitutional rights of citizens to observe, document, and protest government action. However, officers cannot establish ad hoc exclusion zones simply because observation makes operations more difficult or subjects agents to public scrutiny. Any restriction on citizen movement or activity must be carried out by local or state police acting on specific, articulable safety concerns rather than general preferences for operational convenience. When ICE officers order bystanders to leave public areas or move vehicles, they are exceeding their authority and violating the constitutional rights of American citizens.
 
Comparing ICE to Other Federal Agencies
 
Examining other federal law enforcement agencies shows that ICE's authority over citizens is notably narrow compared to some agencies while similar to others. The United States Marshals Service possesses unique authority under 28 USC § 566(c) to "command all necessary assistance to execute its duties," which includes the explicit authority to recruit civilian assistance. No other federal agency shares this sweeping power. When a United States Marshal commands assistance, federal law makes that command legally binding. ICE has no comparable authority.
 
The Secret Service achieves effective control over civilian movement through a different mechanism. 18 USC § 1752 creates criminal penalties for entering "restricted buildings or grounds" near protected people, with violators facing up to ten years imprisonment. This statutory scheme gives the Secret Service functional control over civilian activity by criminalizing unauthorized presence in designated areas. Again, ICE has no parallel mechanism to establish exclusion zones or criminalize civilian presence near enforcement operations.
 
ICE operates without several of the mechanisms that give other agencies broader authority over civilians. This naturally leads to the conclusion that ICE's jurisdiction remains tightly focused on immigration enforcement and does not include additional authority over citizens. Congress deliberately constrained ICE's power to its specific mission rather than granting it the broader police powers that were granted to other federal agencies.
 
Practical Implications for Citizens
 
We can draw several conclusions from this analysis.

1) Immigration officers have no general authority over United States citizens except when those citizens are reasonably suspected of federal felony offenses.

2) Bystanders and third parties retain their constitutional rights during immigration operations, including the right to observe and record as well as the right to decline to comply with commands.

3) The use of force against citizens exceeds the authority granted by federal law with very few exceptions.
 
When an ICE officer orders a United States citizen to vacate an area, move a vehicle, or comply with other commands, that officer is operating outside of the law. ICE officers cannot establish broad exclusion zones or issue sweeping commands based merely on operational preference or a desire to avoid observation. They must act within the confines of the law. Citizens retain the freedom to walk away from encounters with ICE, the right to remain in public spaces, and the liberty to document government officials performing their duties.
 
Federal law grants ICE officers specific, enumerated powers focused narrowly on immigration enforcement, permitting them to interrogate aliens, arrest those found in violation of immigration law, and execute warrants issued for immigration violations. There are no federal statutes which empower ICE agents to exercise general police authority over bystanders, journalists, or protestors. When ICE officers resort to force against citizens who refuse commands that fall outside of this limited grant of power, they are exceeding their statutory authority and violating the constitutional rights of their victims.
 
Addendum:

Several people have responded to this post by claiming that Title 18 section 111 gives ICE the authority to arrest citizens who impede, intimidate, or interfere with ICE officers. The Trump administration has also attempted to make the same claim in court cases involving ICE arrests of citizens, and that claim has been rejected by the courts over and over and over again. Here’s the reason why:

18 USC § 111 states:

“(a) In General.—Whoever--

(1) forcibly assaults, resists, opposes, impedes, intimidates, or interferes with any person designated in section 1114 of this title while engaged in or on account of the performance of official duties; or

(2) forcibly assaults or intimidates any person who formerly served as a person designated in section 1114 on account of the performance of official duties during such person’s term of service,

shall, where the acts in violation of this section constitute only simple assault, be fined under this title or imprisoned not more than one year, or both, and where such acts involve physical contact with the victim of that assault or the intent to commit another felony, be fined under this title or imprisoned not more than 8 years, or both.”

Those who claim that this authorizes ICE to arrest anyone impeding their operations are treating the words "impedes, intimidates, or interferes with" as standalone offenses without consideration for the rest of the statute. 18 USC § 111 does not criminalize mere impediment of federal officers. Rather, it criminalizes conduct by anyone who "FORCIBLY assaults, resists, opposes, impedes, intimidates, or interferes with" designated federal officers. That single adverb applies to all of the listed offenses and thus excludes from criminal liability any conduct that falls short of actual force or credible threats of violence.

The question of whether "forcibly" modifies only "assaults" or extends to all subsequent verbs was resolved by the Fourth Circuit in Long v. United States, 199 F.2d 717 (4th Cir. 1952). The court addressed this precise grammatical issue by saying: "The use of the adverb 'forcibly' before the first of the string of verbs, with the disjunctive conjunction used only between the last two of them, shows quite plainly that the adverb is to be interpreted as modifying them all." The court explained that ordinary rules of grammatical construction require this interpretation, and that any alternative reading "would be absurd to limit the modifying effect of 'forcibly' to the word 'assaults,' since this is the only one of the succeeding verbs in which the use or threat of force is necessarily implied." The court further noted that Section 111 appears in Chapter 7 of the Criminal Code, titled "Assault," alongside other provisions defining crimes "in which force is a necessary element.” In the words of the court, this placement of the statute is "not without significance."

The Department of Justice's own Criminal Resource Manual reinforces this interpretation in Section 1565, which addresses the "Forcible Act Required" under 18 USC § 111. The manual states unequivocally: "Force is an essential element of the crime." Citing Long, the manual explains that courts must determine "whether the element of force, as required by the statute, is present in a particular case" based on "all of the circumstances." The manual extends this force requirement beyond assault to the other verbs: "These judicial decisions suggest a similar construction of the statutory words 'resists, opposes, impedes, intimidates or interferes with.'" In other words, the government's own prosecutorial guidance acknowledges that impediment, intimidation, and interference must be forcible to constitute criminal conduct under Section 111.

What qualifies as "forcible" conduct? The standard jury instruction, cited in United States v. Schaefer (D. Oregon 2023), provides an answer to that question: "There is a 'forcible assault' when one person intentionally strikes another, or willfully attempts to inflict injury on another, or intentionally threatens another coupled with an apparent ability to inflict injury on another which causes a reasonable apprehension of immediate bodily harm." The DOJ manual similarly explains that force may be satisfied by "a threat uttered with the apparent present ability to execute it, or with menacing gestures, or in hostile company or threatening surroundings." These definitions share a common thread: they require either actual physical contact, attempted physical injury, or credible threats that create reasonable fear of imminent harm.

The practical application of this force requirement can be seen in United States v. Chapman, 528 F.3d 1215 (9th Cir. 2008), where the Ninth Circuit confronted a case involving a protester who resisted federal officers through passive civil disobedience. The court held that "viewing the evidence in the light most favorable to the government, no rational trier of fact could find that Chapman's conduct rises to the level of a criminal offense under 18 U.S.C. § 111." The court explained that all circuit interpretations of Section 111 "have adopted a construction that leaves no room for a conviction that does not involve at least some form of assault."

The Chapman court explicitly rejected the government's argument that "mere passive resistance is sufficient for a conviction under § 111(a)." The court explained that if this section actually made passive resistance a crime, then "A protester who resisted arrest by merely standing still would be guilty of a felony punishable by up to eight years imprisonment, whereas an individual who attempted to punch an arresting officer could be guilty only of a misdemeanor, so long as the attempted physical contact was unsuccessful." The court demonstrated that treating non-forcible resistance, impediment, or interference as federal crimes under Section 111 would reduce the rest of the language in that section to pure absurdity.

8 USC § 1357 authorizes immigration officers to arrest individuals for "any offense against the United States" committed in the officer's presence. However, passive obstruction—standing in a roadway, blocking a driveway entrance, sitting in place and refusing dispersal orders—does not constitute an offense against the United States under 18 USC § 111 because such conduct lacks the essential element of force. Citizens who engage in nonviolent civil disobedience to protest ICE operations may be violating state or local traffic laws, trespass statutes, or disorderly conduct ordinances, but they are not committing any of the federal crimes defined in Section 111.

ICE agents therefore possess no authority to arrest citizens for passive impediment of immigration enforcement operations. The claimed offense simply does not exist. Unless protesters use actual physical force, attempt to inflict injury, or utter credible threats coupled with apparent ability to execute them, their conduct—however obstructive—falls outside Section 111's scope and thus outside ICE's statutory arrest authority for offenses committed in their presence.