The immigration agency will use Medicaid data to identify and locate people it believes are in the country unlawfully.

An agreement signed Monday between the Centers for Medicare and Medicaid Services and the Department of Homeland Security has given U.S. Immigration and Customs Enforcement access to the personal data of all Medicaid enrollees, according to a report from The Associated Press.

The plan is the latest step by the Trump administration to gather sensitive information about people living in the U.S. as it seeks to crack down on illegal immigration.