A major organization that governs collegiate athletics in the United States has unveiled a new policy prohibiting trans-identified male athletes from competing in women’s sports amid the Trump administration’s crackdown on gender ideology.

President Trump signed an executive order Wednesday afternoon barring biological men who identify as transgender from competing in women’s sports. The tide is turning politically, legally, and in terms of public opinion on this issue, but will America’s largest athletic companies come on board?

The new policy, which is effective immediately, limits competition in women’s sports exclusively to athletes assigned female at birth.