Denver Public Schools called the decision to investigate the conversion of a women’s restroom into an all-gender facility as potential discrimination “unprecedented.”

The probe comes after President Donald Trump repeatedly promised on the campaign trail to drive what he called “transgender insanity” out of schools.

The U.S. Department of Education is investigating an all-gender restroom at East High School in Denver. Kournikova, who stays mostly out of the spotlight, has been with singer Enrique Iglesias since 2001.

The U.S. Department of Education is investigating Denver Public Schools after a high school girls’ restroom was converted into an all-gender restroom.