A Nixon-era amendment to the Civil Rights Act called Title IX bans gender-based discrimination in school and college sports.
The Biden administration is planning to expand Title IX protections to cover gender identity and sexual orientation. But opponents plan to rally Thursday in Scottsdale.
The rally is part of a nationwide bus tour put on by a coalition of women advocates called Our Bodies, Our Sports. On the speaker list is an Olympic gold medalist swimmer.
The group says that a rule the Biden administration aims to use to enforce Title IX would actually rob women of athletic opportunities and their privacy.
The text of the rule does not specifically mention transgender athletes. It bans discrimination based on sexual orientation and gender identity.
At least two dozen Republican-led states have sued to block the rule from taking effect in August.
