About 100,000 Oregonians who receive cash assistance monthly could have their Social Security numbers, home addresses, and immigration status shared with federal immigration authorities unless a court intervenes before Tuesday, Aug. 11.

Oregon Attorney General Dan Rayfield filed a federal lawsuit Monday, Aug. 3, challenging a Trump administration policy that would open Temporary Assistance for Needy Families records to the Department of Homeland Security and potentially private organizations.

The 60-page complaint, filed in U.S. District Court in Washington, D.C., was joined by 23 other states, the District of Columbia, and the governors of Kentucky and Pennsylvania.

"Families turn to these programs because they're doing everything they can to keep a roof over their heads and food on the table — these programs are a literal lifeline for struggling parents and their kids," Rayfield said in a statement from the Oregon Department of Justice.

The rule at issue was announced in June by the Administration for Children and Families, a division of the U.S. Department of Health and Human Services.

It claims broad new federal authority to oversee state-run TANF programs and share recipient data across agencies. The coalition argues the policy violates the Administrative Procedure Act and the Spending Clause of the U.S. Constitution.

What's at stake for Oregon families

Oregon receives roughly $165 million annually in TANF block-grant funding. Salem and Marion County families are among the approximately 100,000 residents statewide who rely on the program. The state uses that money for childcare, emergency housing for domestic violence survivors, food assistance, and support for grandparents raising grandchildren.

Under the 1996 law that created TANF, states verify who qualifies for benefits. The new federal rule would force states to hand over additional participant details, including country of origin, to federal agencies for immigration-status checks. The lawsuit alleges the rule would place "direct and significant" costs on states, forcing them to redirect resources from families to federal compliance demands.

Gov. Tina Kotek said the administration is "illegally trying to intimidate and raise barriers to critical help for vulnerable families" and called the data-sharing rule "a political hammer to keep parents away from childcare, job training, and basic assistance."

The TANF lawsuit is the latest in a series of state challenges to Trump administration data-sharing demands. Courts have previously blocked or limited federal attempts to share taxpayer information, Medicaid databases, and SNAP food-aid recipients' data with immigration officials, according to the Los Angeles Times.

The Administration for Children and Families declined to comment on the lawsuit, Reuters reported. The Trump administration has said the data-sharing policy is necessary to verify whether states are confirming recipients' citizenship or immigration status before providing benefits.

The case, captioned New York v. ACF, is co-led by the attorneys general of California, New York, and the District of Columbia. The coalition is asking the court to declare the rule illegal and block it before the Tuesday, Aug. 11 effective date.

No hearing has been scheduled.