Oklahoma Gov. Mary Fallin has signed into law a bill to bring the state into compliance with the federal REAL ID Act, at a cost of an additional $5 to Oklahomans for driver's licenses.
The law signed Thursday brings Oklahoma into compliance with federal law intended to increase security and signed by Republican former President George W. Bush four years after the Sept. 11, 2001, terror attacks.
The U.S. Department of Homeland Security had said failure by Oklahoma to act in 2017 could result in residents being unable to use state driver's licenses to board commercial airline flights or enter federal buildings or military installations.
Opponents argued the law is an unconstitutional invasion of privacy, and residents will have the option of opting out of the federally compliant state ID.