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MONTGOMERY, Ala. – Governor Kay Ivey has signed House Bill 391 into law. The new law would ban transgender youth from participating in school sports of the gender with which they identify.

The bill was delivered to Gov. Ivey on Tuesday and she signed it into law late Friday afternoon. The governor’s office confirmed that she signed the bill but did provide further comment.

This piece of legislations states that that public K-12 schools cannot allow a “biological male” to participate on a female team.

Rep. Scott Stadthagen, a Republican from Hartselle, sponsored the bill in the House. He said the purpose of the bill is to protect the integrity of girls’ sports.

Supporters of the bill say transgender girls are born bigger and faster and have an unfair advantage in competition. Opponents say the bills are rooted in discrimination and fear.

Idaho last year became the first state to pass such a ban, but it faces a legal challenge. While, the governors of both Tennessee and Mississippi signed similar bills into law in March.