The Department of Justice issued a legal opinion on September 1 informing all 50 states, Washington D.C., and U.S. territories that they are required by federal law to report illegal aliens in their jurisdictions to the Department of Homeland Security — or risk losing federal funding. The law in question has been on the books for thirty years.
The DOJ found an existing law and read it out loud.
Assistant Attorney General T. Elliot Gaiser, who heads the DOJ's Office of Legal Counsel, issued the opinion revising a flawed 1998 interpretation that had effectively let states ignore the requirement for more than twenty years. "Congress wrote this requirement plainly," Gaiser wrote. The requirement is embedded in the Personal Responsibility and Work Opportunity Reconciliation Act of 1996 — the welfare reform law that, among other things, created the Temporary Assistance for Needy Families program, known as TANF.
The law is straightforward. When a state accepts TANF funding — $16.4 billion distributed annually across all 50 states, D.C., and U.S. territories — it accepts the obligation to report illegal aliens to DHS. That's the original deal, unchanged. "When a state chooses to participate in TANF, it accepts the obligation to report illegal aliens," Gaiser stated.
The 1998 OLC opinion that the new guidance replaces had muddied the waters enough to give sanctuary jurisdictions legal cover for decades. That opinion argued the reporting requirement was ambiguous. Gaiser's revision says it was never ambiguous. The plain text of a thirty-year-old law now applies the way Congress wrote it.
The enforcement mechanism is funding. "States that accept TANF funding must abide by federal law, and failure to comply may lead to serious consequences, including loss of program funding," the DOJ statement read. The same framework applies to Supplemental Security Income. States that refuse to comply lose more than a political argument — they lose the money.
Gaiser framed the stakes in terms that sanctuary-city governors will have a hard time spinning. "Tax dollars intended to help vulnerable Americans should not perversely encourage illegal entry," he wrote. That's the core tension. TANF exists to help Americans in need. Using it as a shield to avoid reporting illegal aliens turns a safety net into an incentive structure — and the DOJ is now saying that was never the deal.
Sanctuary-state officials will call this federal overreach. That's a curious argument to make about a condition written into the law they voluntarily accepted funding under. Nobody forced a state to take TANF money. The strings were attached in 1996. The federal government is just pulling on them now.
The timeline is worth pausing on. A law passed thirty years ago. Misinterpreted by a single OLC opinion twenty-eight years ago. Left unenforced through four administrations. The infrastructure of non-compliance was built on one assumption: that nobody would ever bother to check.
What makes this effective is the simplicity. A legal opinion that says the law means what it says — simpler than an executive order, faster than a new regulation, requiring no new votes. States can comply, or they can explain to their residents why federal aid for vulnerable families disappeared because the governor refused to follow a 1996 statute.
The law has existed for thirty years. Enforcement was the gap. One of those just closed.
