The Alabama House of Representatives passed a bill requiring K-12 athletes to join teams based on the biological sex listed on their birth certificates.
The state House approved the bill with a 74-19 vote after Republicans ended a Democratic filibuster.
Republican lawmaker Rep. Scott Stadthagen said the bill would provide a "fair, level playing field for female athletes. It is unfair for biological males to compete against females in high school sports."
"I feel sorry for the kids you're talking about, I really do," said Stadthagen, referring to transgender athletes who are struggling to fit in. "But what about the females who have worked since they started at four years old, and they get to high school and all their dreams and scholarships yanked before their eyes?"
The proposed legislation will now move on to the Alabama Senate.