[Cameron]

What happens if a Chicago police officer or a group of Chicago police officers were to help Tom Homan’s Immigration and Customs Enforcement Agents, even though Chicago Mayor Brandon Johnson declares Chicago a Sanctuary City and forbids Chicago police officers from assisting ICE agents in deporting illegal migrants who have committed a crime?

[Marcos]

If a Chicago police officer, or even a few of them working together, helped U.S. Immigration and Customs Enforcement (ICE) agents move undocumented immigrants with serious criminal records out of the city, they would be stepping onto very shaky ground. That would happen even after Mayor Brandon Johnson welcomed newcomers and the city promised, through the Welcoming City Ordinance and the statewide TRUST Act, to shield most immigrants from deportation. Because both rules say no local worker should assist in noncriminal immigration raids, any cop siding with ICE could face legal action, job discipline, and public anger.

Chicago’s Sanctuary City Policies and Legal Framework

The Welcoming City Ordinance firmly locks in Chicago’s Sanctuary City promise by ordering the Chicago Police Department and every other city office to disregard ICE’s civil immigration work.

Under this law, officers may not:

• Warrant arrest or keep someone in jail just because they lack papers or appear in a federal database.
• Quiz a person about where they were born or pass that information to Washington unless a judge orders it or a clear U.S. rule says they must.
• ICE agents can ask about a person’s custody status, release date, or contact information, and CPD may reply if no criminal warrant is shown.
• City facilities, however, cannot be converted into interview rooms for ICE business without a warrant.
• The Illinois TRUST Act, passed in 2017, shields immigrant neighbors by blocking state and local police from helping with civil immigration cases unless a federal judge has signed the arrest order.
• For instance, if ICE sends a detainer asking CPD to keep an undocumented person for an extra 48 hours, officers may refuse under the TRUST Act unless that judicial warrant is present.
• Mayor Brandon Johnson keeps saying the same thing.
• CPD will not lend a hand to ICE, because doing so breaks the trust that makes communities safer.
• Johnson adds that when undocumented residents know they will not be turned over to immigration, they report crimes more often, which can lower overall neighborhood violence.

Consequences for Chicago Police Officers Assisting ICE

Should any officer step outside these rules and help ICE deport undocumented migrants for offenses they committed, they would break both the Welcoming City Ordinance and the TRUST Act. Several penalties could then follow:

Disciplinary Action by the Chicago Police Department

Because department rules mirror the Welcoming City standard, any officer aiding ICE risks punishment, from written reprimands to suspension or even termination, depending on the severity of the breach.

Helping ICE with civil immigration work, like picking up someone just for being undocumented, or honoring an ICE hold without a criminal warrant, goes against CPD’s own rules. If an officer steps over that line, here is what could happen:

Suspension or Termination:

A probe by CPD’s Internal Affairs could put an officer on unpaid leave, and in serious cases, lead straight to firing. Under Superintendent Larry Snelling, CPD has made it clear: do not block an ICE presence, but do not lend a hand with civil arrests.

Written Reprimands or Demotion:

If the breach is minor, especially if it is the first time, the officer could get a written warning or even a lower rank.

Training Mandates:

To stop the mistake from repeating, the department may order that the officer take fresh classes on the CHPD’s immigration rules.

Legal Consequences Under Illinois Law

Under the Illinois TRUST Act, local police are mostly barred from helping ICE with immigration arrests, unless ICE has a federal criminal warrant. If an officer still lends a hand, they may face some serious fallout:

Attorney General Investigation:

The Illinois Attorney General’s Office can investigate TRUST Act breaches. For instance, when ICE picked up ten people at a South Loop check-in on June 4, 2025, the Illinois Coalition for Immigrant and Refugee Rights asked the AG to look into possible Chicago Police ties. Polls show that 60 percent of Americans favor sending back undocumented people who have committed crimes, while 48 percent still back mass deportation of all undocumented immigrants.

Civil Lawsuits:

Officers might also be sued by those directly harmed or by advocacy groups that claim their constitutional rights, like due process, were violated when people were held without a solid legal reason.

Political and Community Backlash

Chicago has called itself a Sanctuary City since Mayor Harold Washington was in office back in 1985, and the policy still has strong backing from city leaders and many residents, especially in immigrant-rich areas like Little Village.

Officers who choose to help federal agents from ICE could find themselves in a tough spot for several reasons:

Public Outrage:

Groups like the Illinois Coalition for Immigrant and Refugee Rights and Arise Chicago are already on alert. They can quickly set up rallies, webpage campaigns, and other visible acts that hammer away at an officer’s reputation in the neighborhood. The huge march that filled downtown streets just days after the June 2025 raids showed how fast the community can move.

Political Heat:

Mayor Brandon Johnson and 39 of the 50 City Council members have publicly supported the Welcoming City Ordinance, most recently during the 39-11 vote on January 15, 2025, that killed a plan to let CPD assist ICE. An officer who goes against that rule risks being publicly named, summoned to explain their actions, or asked to answer questions before community forums and even oversight committees.

Union Watch:

The Fraternal Order of Police usually backs its members. Yet, the same union is being squeezed from both sides to defend officers or honor the city’s stated policy, leaving many within the rank and file uncertain about where loyalty lies.

Federal Legal Risks

Under federal law, local police do not have to help ICE carry out immigration arrests, even if former Border Czar Tom Homan urged cooperation during the Trump years. Still, officers who choose to lend a hand may run into trouble.

Potential Federal Lawsuits:

When a detainer results in the wrongful arrest of someone like Wilson Rogelio Velásquez Cruz in Atlanta, the officers involved can be sued for violating that person’s civil rights.

Conflict with Federal Priorities:

ICE claims to target only undocumented immigrants with serious criminal records, yet more than half of recent arrests have included people with no violent past or even open cases.

Context of ICE Operations and Chicago’s Resistance

• Since President Trump took office again in January 2025, ICE has stepped up in Chicago, grabbing over 100 people by late January while claiming most had records for serious crimes.
• Mayor Brandon Johnson and Governor J.B. Pritzker push back, citing the city’s Sanctuary City rule and Illinois TRUST Act.
• The U.S. Justice Department sued Chicago and the state of Illinois on February 6, 2025, claiming the city’s sanctuary laws hinder federal immigration work and violate the Constitution’s Supremacy Clause.
• The legal action landed squarely on Mayor Brandon Johnson and Governor J.B. Pritzker, highlighting the long-running clash between national and local rules.
• In response, Chicago Police Department Superintendent Larry Snelling said his officers will not help ICE with routine immigration checks.
• Still, they must honor a court-issued criminal warrant from the agency.
• If an undocumented person is booked for a serious offense and ICE shows the proper warrant, CPD has to go along.
• The department cannot, however, hold people just because ICE asks or keep someone in custody solely based on their immigration status, as that would break both city and state rules.

Hypothetical Scenarios and Outcomes Single Officer Acting Independently:

If one officer were to help ICE anyway, letting the agency know when a person would be released or holding someone simply on immigrant grounds, that conduct would draw an immediate City Hall review, likely leading to a suspension. The Illinois Attorney General might then examine whether the TRUST Act was broken, adding another layer of scrutiny.

Public anger can spread quickly on social media, often forcing cities to act fast. Just look at the case of former FHP Trooper Timmy Williams; once video of his misconduct went viral, he was fired almost overnight. That’s a warning for any public agency that thinks it can keep problems quiet.

Group of Officers Working with ICE:

The fallout would be much bigger if several CPD officers joined ICE. The department could trigger a city-wide review, leading to dozens of suspensions or firings. On top of that, the Illinois Attorney General might open her investigation, while advocacy groups could sue or stage huge street protests, like the ones in June 2025 that ended with 17 arrests. Alongside these local moves, the DOJ’s ongoing lawsuit could point to this behavior as proof that Chicago is blocking justice, which would put even more pressure on the city.

Broader Implications: Community Trust

• Mayor Johnson says that working with ICE tears apart the trust between police and neighborhoods, making many undocumented residents too scared to report crime.
• When people stay silent, crime can rise.
• His office points to changing statistics as proof.
• Since sanctuary laws took effect, violent crime has gone down in Chicago because more residents feel safe helping police.

Federal Pressure:

• At the federal level, the Trump team, led by adviser Tom Homan, has warned that city leaders like Johnson could face lawsuits for what they call obstruction of immigration work.
• Online posts even hint that officials might be charged under laws aimed at people who harbor undocumented immigrants.
• Though interesting, these claims are still guesswork.
• The DOJ lawsuit looks at rules, not each officer’s actions.

Economic and Social Impact:

• From 2022 through early 2025, Chicago poured $638.7 million into services for migrants, showing how seriously city leaders take newcomer needs.
• Yet, if officers start working hand-in-hand with ICE, fear could skyrocket in places like Little Village.
• Residents might hoard food and withdraw from everyday life, as they did in January 2025 when rumors of raids spread.

Recommendations for Officers

• Every CPD officer must follow the Welcoming City Ordinance and the Illinois TRUST Act to avoid fines or new lawsuits.
• The department offers these quick reminders:
• Always check that any ICE request has a valid judicial warrant before taking steps.
• Write down every interaction with ICE so there is a clear record showing what the unit did, if anything.
• If the legality of helping ICE is still unclear, always ask a supervisor or the legal team before proceeding.
• Monitor neighboring attitudes because the community can respond quickly, as shown in the Timmy Williams incident, when recorded misconduct triggered public outrage.
• Chicago police who help ICE deport undocumented immigrants caught up in crime cases risk serious trouble, from CPD discipline to state probes and an angry public.

Federal rules still ask officers to honor criminal warrants.

Still, city and state laws, like the Welcoming City Ordinance and Illinois TRUST Act, firmly block them from chasing unrelated civil immigration requests.

The Justice Department’s lawsuit and widespread community pushback show just how heated this debate has become in a city that has called itself a Sanctuary City since 1985.

Because of that history, CBC officers must tread carefully through these legal and political waters, or they could face both professional and legal consequences.