I predict that feminist groups will never have to admit males or anyone they wish not to; gay groups won't have to admit straights, black groups won't have to admit whites...etc. BUT---BUT---I predict CHRISTIAN groups will be forced to end their "discrimination" or be forced off campus and eventually underground in all of America. I don't think this is exactly a daring prediction.
"Hate speech" laws are open to the interpretation of future courts to include the Bible and Christian beliefs as hate speech (just as "gay rights" laws are open to interpretation by future courts to include the right to sodomize boys, which is inevitable.)
In 50 years (IF there is an America in 50 years), if a politician suggests he supported a ban on abortion or some other Christian belief or Christian candidate 50 years earlier, he will be universally deemed to be unfit for public office just as Lott has been judged for seeming to suggest his support for some presidential candidate of 50+ years ago.
The "freedom of association" is a right that emanates from the 9th amendment:
"The enumeration in the Constitution, of certain rights, shall not be construed to deny or disparage others retained by the people."
The right to "exclude" and/or "discriminate" emanates from the 9th amendment as well.
Your government, on private property, cannot enact laws to the contrary.
If Rutgers is a private university, they are free and have the liberty to exclude and discriminate to their hearts content.