Mississippi's Department of Public Safety will gain sweeping authority this week to compile and maintain a comprehensive database of immigrants illegally residing in the state, marking one of the nation's most ambitious state-level immigration enforcement initiatives. The law, set to take effect Wednesday, directs the agency to use "all reasonable lawful investigative means available" to identify and track undocumented residents.
The Database Requirements
The new law mandates collection of detailed information including names, addresses, country of origin, and whether individuals are adults or minors. The department must also document any criminal history and the date, location, and status of deportation proceedings for each person identified. The department is directed to share information on those suspected of violating laws with state and local authorities. The measure neither requires nor prohibits the database from being shared with U.S. Immigration and Customs Enforcement.
Republican state Sen. Angela Hill, who sponsored the measure, said states have a right and obligation to assist the U.S. government in discouraging illegal immigration, which she said facilitates crimes such as human and drug trafficking. Hill said, "The new law seems like commonsense to me. In order to address the problems caused by illegal immigration, we need to understand the magnitude of the problem. Identifying the number and identity of illegal aliens in Mississippi is a concrete way to better understand the problem."
National Context and Precedent
Nationwide, states already have enacted more than 100 immigration-related laws this year, according to an Associated Press tally. In Republican-led states, those measures generally have aligned with Trump's agenda by requiring local sheriffs to sign cooperative agreements with ICE, reinforcing eligibility restrictions for public benefits, and directing election clerks to check voter rolls against the federal Systematic Alien Verification for Entitlements system in an attempt to flag noncitizens.
The closest thing to Mississippi's new law appears to be a 2021 executive order by Republican Florida Gov. Ron DeSantis. That measure directed the Florida Department of Law Enforcement to "use all lawful investigative means available" to determine the number and identities of all "illegal aliens" who had been transported from the nation's southwest border to Florida. The Florida agency did not respond to an AP request for information about the results of the executive order. Trump's administration, meanwhile, has stepped up enforcement of a decades-old federal law that requires noncitizens to register with the U.S. government.
Implementation Challenges
The Mississippi law envisions more than a one-time count. It prescribes an ongoing effort to keep track of immigrants illegally in the state for the next two years. That could get complicated as people overstay visas, apply for new forms of legal status, and move into and out the state.
Jessica Vaughan, director of policy studies at the Center for Immigration Studies, a nonprofit think tank that supports restrictions on immigration, said state officials will need to come up with "a credible and fairly foolproof way of correctly determining someone's immigration status." Vaughan said the law "makes a lot of sense," adding that it "raises the likelihood that someone's illegal presence is going to come to the attention of federal authorities."
Mississippi has one of the country's smallest percentages of immigrants illegally residing in the state — fewer than 28,000 people, amounting to less than 1% of its population — according to a report by the American Immigration Council, which used 2023 Census Bureau data.
Critics Raise Concerns
Efrén Olivares, vice president of litigation and legal strategy at the National Immigration Law Center, a nonprofit that advocates for low-income immigrants, said, "You can be undocumented today, and then have status tomorrow, and then lose it again next month, and then regain it three months from now." He said, "It's practically unworkable, but it's also very worrisome, because it's eerily reminiscent of other countries that have created lists of certain groups of people."
Victoria Francis, deputy director of state and local initiatives for the American Immigration Council, a nonprofit that advocates on behalf of immigrants, said the new law "is very concerning for a bunch of different reasons," including the potential to redirect law enforcement resources away from protecting the public to investigating people from foreign countries who may be contributing to the economy. Francis said, "A mandate like this invites profiling and turning entire communities into targets."
Lydia Grizzell, policy and advocacy manager for the American Civil Liberties Union of Mississippi, said the law could undermine trust between police and residents. She said, "That increases the likelihood of individuals not reaching out to law enforcement when it's needed – and that is opposite of the mission."
Why This Matters:
Mississippi's database initiative represents a concrete effort by state government to enforce federal immigration law where federal enforcement has been inconsistent. With fewer than 28,000 undocumented immigrants representing less than 1% of the state's population, the law provides a measurable framework for understanding the scope of illegal immigration's impact on state resources and public safety. The measure's requirement for tracking criminal history and deportation proceedings directly addresses concerns about human and drug trafficking that often accompany illegal immigration. As one of more than 100 state immigration laws enacted this year, Mississippi's approach tests whether state-level data collection can effectively support federal enforcement priorities while maintaining accurate records in a system where immigration status frequently changes. The law's success or failure in creating a workable database will likely influence similar efforts in other states seeking to assert their role in immigration enforcement.