The Missouri Senate has issued a subpoena compelling the state Revenue Department to hand over documents by April 2 about new state driver's licensing procedures.
The order was signed Monday by Republican Senate President Pro Tem Tom Dempsey. It requires the department to produce documents to help determine whether the state is sharing people's personal information with the federal government or a private company.
Lawmakers began investigating after a southeast Missouri man filed a lawsuit. The lawsuit challenges the new requirement that documents such as birth certificates and concealed weapons endorsements be scanned into a state database when a person applies for a driver's license.
Revenue Department officials have denied during legislative hearings that personal information is being shared.
A call to the department Monday night was not immediately returned.