Ohio Gov. Mike DeWine signed a bill Wednesday banning transgender students from using school restrooms that align with their gender identities. The Republican-majority state Senate pushed forward SB 104, also known as the “Protect All Students Act,” in a 24-7 party-line vote.

“No school shall permit a member of the female biological sex to use a student restroom, locker room, changing room, or shower room that has been designated by the school for the exclusive use of the male biological sex,” and vice versa, the bill reads.

The bill defines “biological sex” as the “biological indication of male and female, including sex chromosomes, naturally occurring sex hormones, gonads, and nonambiguous internal and external genitalia present at birth, without regard to an individual’s psychological, chosen, or subjective experience of gender.” The bill adds that a birth certificate may be used as proof of biological sex if it was “issued at or near the time of the individual’s birth.”