The EEOC did rule last year that discrimination by employers or potential employers based on gender identity is a violation of Title VII of the Civil Rights Act of 1964. Here is the Commission's ruling - (LINK). Based on some further research, this is not a binding decision on courts.
"The University of Illinois is also in turmoil. The university sports an Interim Chancellor, an Interim Athletic Director, and an Interim Football Coach; the game will be played at Soldier Field, making this an Illini Interim Home Game."