An institution may not deny any benefit or privilege that is available to any student organization, or discriminate against, a religious, political, or ideological student organization:
(1) because such student organization is religious, political, or ideological;
(2) on the basis of protected expressive activity engaged in by the student organization or the student organization's members; or
(3) based on a requirement that a leader of the student organization:
(a) affirm or adhere to the sincerely held beliefs of the student organization;
(b) comply with a standard of conduct the student organization establishes; or
(c) further the mission, purpose, or standards of conduct of the student organization, as these are defined by the student organization.