States aren’t backing down when it comes to blocking the Biden administration’s new set of rules for Title IX.

Ten states have successfully obtained preliminary injunctions against the Biden administration’s new expansion of Title IX, and 26 attorneys general are challenging the expansion in seven lawsuits.

Passed in 1972, Title IX prohibits discrimination on the basis of sex in educational programs that receive federal funding. The new expansion of Title IX by the Biden administration extends what qualifies as discrimination based on sex to include gender identity.

Under the new regulations, schools and their staff will have to allow biological men who identify as transgender women access to women’s bathrooms, sports teams, and any “female-only” other organization. This will also apply to biological women calling themselves transgender men.