Tennessee Gov. Lee signed SB1440 defining 'sex' as immutable at birth, ending gender-marker updates on state IDs
On May 24, 2023, Tennessee Governor Bill Lee signed SB1440 (Public Chapter 486) into law, adding a statutory definition of "sex" as "a person's immutable biological sex as determined by anatomy and genetics existing at the time of birth" throughout Tennessee code. The measure had passed the Senate 27-6 and the House 71-21. Citing the new definition, the Tennessee Department of Safety stopped updating gender markers on driver's licenses for transgender residents.