Alaska: The Matanuska-Susitna Borough School District board on Wednesday approved an activities policy that would prohibit transgender girls from competing in girls sports. The action comes as federal agencies continue to affirm legal protection for people discriminated against based on gender identity, Alaska Public Media reports.

Attempting to ban transgender girls from playing on girls’ teams constitutes illegal discrimination under the federal law known as Title IX, according tothe Alaska Civil Liberties Union (ACLU) of Alaska. Title IX prohibits sex-based discrimination in any education program or activity offered by a school that receives federal funding.

“The Mat-Su, and any other school board or district that’s considering this, is putting themselves in legal peril, and this kind of litigation has ended up being very, very costly in other states,” said Stephen Koteff, the ACLU of Alaska’s legal director.

US President Joe Biden has issued two executive orderslast year and on Wednesday that affirm rights of transgender people to not be discriminated against.

During a board discussion, board President Ryan Ponder said the policy is meant to “maintain fairness in athletic opportunities for women” and “ensure discrimination against girls and women does not occur.” He added the policy is supported by federal law and federal case law.