In the days following the lawsuit, President Donald Trump signed an executive order banning transgender athletes from women's sports, and the U.S. Department of Education opened a probe into Penn.

Three former athletes at the University of Pennsylvania women’s swimming program sued the school, the Ivy League Council of Presidents and athletics organizations Tuesday, claiming they violated federal law to allow transgender athlete Lia Thomas to compete against them.

Three former Penn swimmers have brought a lawsuit over the participation of transgender swimmer Lia Thomas three years ago.