The CSU has "de-recognized" InterVarsity Christian Fellowship (a 700 chapter campus ministry) at all 23 of its campuses. The move came after the organization failed to sign a general non-discrimination statement.
The group accepts "all comers," but it demands that they subscribe to certain beliefs (e.g., the sanctity of heterosexuality) and refrain from certain conduct (e.g., being gay).
In Christian Legal Society v. Martinez (2010), the Supreme Court ruled that such policies serve to effectively discriminate.
As a result of the University's action, the group will have to pay to use campus meeting rooms.