It’s the latest step in an unprecedented initiative to pool confidential data that the Trump administration claims will help identify noncitizens on voter rolls and tighten immigration enforcement.

The Department of Homeland Security says it intends to add state driver’s license information to a swiftly expanding federal system envisioned as a one-stop shop for checking citizenship.

The plan, outlined in a public notice posted Thursday, is the latest step in an unprecedented Trump administration initiative to pool confidential data from varied sources that it claims will help identify noncitizens on voter rolls, tighten immigration enforcement and expose public benefit fraud.

According to emails obtained by ProPublica and The Texas Tribune, DHS approached Texas officials in June about a pilot program to add the state’s driver license data, but it’s not clear if the state participated.

Earlier this year, DHS added millions of Americans’ Social Security data to the Systematic Alien Verification for Entitlements, or SAVE, system, allowing officials to use the tool to conduct bulk searches of voter rolls for the first time. According to the document filed Thursday, SAVE also recently expanded to include passport and visa information.