In the lawsuit filed Monday, the Justice Department alleges the state Department of Education and the Minnesota State High School League are violating Title IX, a federal law against sex discrimination in educational programs that receive federal money.
“The Trump Administration does not tolerate flawed state policies that ignore biological reality and unfairly undermine girls on the playing field,” Attorney General Pamela Bondi said in a statement.
The Justice Department said in a statement that Minnesota violates Title IX “by requiring girls to compete against boys in athletic competitions that are designated exclusively for girls and allowing boys to invade intimate spaces designated exclusively for girls, such as multi-person locker rooms and bathrooms.”
To buttress its claims that trans athletes have an unfair advantage, the lawsuit highlights the case of a male pitcher on the Champlin Park High School girls varsity fastpitch softball team who helped lead the school to a 6-0 victory in a state championship game in 2025.
The Trump administration also reversed the Biden administration's interpretation of Title IX, which held that its provisions prohibiting discrimination on the basis of sex also extended to gender identity.
According to the Justice Department, Minnesota's Department of Education receives more than $3 billion annually in federal funding from the U.S. departments of Education and Health and Human Services. It says that funding is contingent on compliance with Title IX.
The lawsuit asks a federal court in Minnesota to declare the state in violation of Title IX and order it to prohibit transgender girls from competing in girls' prep sports.