HELENA — On Monday, Montana Attorney General Austin Knudsen sent a letter to the City of Helena claiming the municipality is not in compliance with the state’s law banning “sanctuary cities.” The letter comes just under a month after the State of Montana launched an investigation into a city resolution on Helena Police policy and Helena’s involvement in federal immigration enforcement.

In the letter, Knudsen laid out the ways he believes the city’s resolution violated state law. The attorney general gave Helena 15 days to respond or reverse the policy. If the city does not comply, his office will pursue legal action.

“Helena’s resolution appears to contain blatant violations of this law,” wrote Knudsen.

On January 26, 2026, the City of Helena adopted a resolution clarifying when and how the Helena Police Department will cooperate with federal immigration officials. The vote was 4 to 1. The Helena commission seats and the mayor are elected in non-partisan races.

In the letter, Knudsen alleges the resolution established “a broad sanctuary city policy” that seeks to protect every illegal immigrant, regardless of whether the individual had committed a serious crime or not. The state further claims the resolution gives illegal immigrants “special privileges” in plea deals and establishes a “free-for-all policy” where a police officer can request the unmasking of Department of Homeland Security and ICE officers.

Knudsen has requested that the City of Helena, in their response, specifically describe in detail how the resolution complies with Montana law, provide emails and correspondence from city staff and the commission regarding the resolution.

Helena City manager Alana Lake told MTN in a statement: “The City of Helena is aware of the issues being raised by the Attorney General’s Office and is reviewing the matter. While we cannot discuss the details of a potential legal issue, the City is committed to transparency and compliance with the law. The City takes these matters seriously and will continue to cooperate with the appropriate authorities while remaining focused on serving our community.”

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Passed in 2021, Montana House Bill 200 prohibits a state agency or local government from implementing any policy that prevents employees or departments from communicating with federal agencies regarding immigration or citizenship status for lawful purposes. It also states governments must comply with immigration detainer requests if they are lawfully made.

HB 200 was backed by Republicans and passed with only Republican votes. Gov. Greg Gianforte signed the legislation into law on March 31, 2021.

Passage of the resolution by the Helena City Commission has drawn ire from conservative voices in Montana politics and on the national level.

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The resolution said the commission supported the Helena Police Department avoiding “committing its resources to federal action for which it has no authority,” such as entering into an agreement with the federal government to directly enforce immigration laws. Under federal law, immigration enforcement is conducted by federal agencies under the Department of Homeland Security. However, under the Immigration and Nationality Act, state and local governments can voluntarily enter into 287 (g) agreements with the federal government that allow them to enforce immigration laws.

The commission further supported HPD’s policy not to stop, detain, or arrest a person solely on suspected violations of immigration law, including assisting other agencies in an arrest based solely on immigration law.

DEEPER LOOK: Helena has seen a growing debate over ICE and local police involvement

In the resolution, the commission also supported an HPD officer, using their own discretion, requesting the identification and unmasking of a Department of Homeland Security Officer if the HPD officer “feels it will not be interfering with the actions of federal officers exercising their jurisdiction.”

“This adversarial relationship by local law enforcement toward federal officers itself undermines public safety and forces immigration officers to fear for their safety when they are simply carrying out their lawful duties,” wrote Knudsen.

The resolution further supports the City of Helena’s policy not to consider immigration consequences in a plea agreement with a defendant.

Mack Carmack, MTN News

The commission also supports the City of Helena not disclosing any sensitive information about any person – including immigration status, sexual orientation, or social security number – except as required by law.

“This is a restriction that directly conflicts with Montana’s prohibition on sanctuary jurisdictions, specifically ‘sending to, receiving from, exchanging with, or maintaining for a federal, state, or local government entity information regarding a person’s citizenship or immigration status for a lawful purpose,’” the attorney general wrote.

If a government is found to be violating Montana’s law banning “sanctuary cities”, the state could fine them $10,000 every five days, prevent them from receiving new grants from the state, and have their projects with the state re-prioritized. A government in violation can avoid penalties by becoming compliant with the law within 14 days of being notified of the violation.

Read the full letter from the Montana Attorney General to the City of Helena: