The U.S. Department of Homeland Security announced Monday it issued a subpoena to the Los Angeles County Department of Public Social Services as part of a probe into the state's Cash Assistance Program for Immigrants to determine if people in the country illegally have been receiving benefits for which they are ineligible.

According to DHS, the subpoena requests all records from the Los Angeles County Department of Public Social Services, the agency that administers the state program, to determine if ineligible immigrants received supplemental security income from the Social Security Administration,

The legal action by the Department of Homeland Security centers around California's Cash Assistance Program for Immigrants.