Not as all. As I said, it was vague. I am sure that we shall soon learn the truth of this (potentially) deplorable situation. If the kids were performing well in college, it is unethical and unprofessional to take any action against them, simply because of their father's political views....IF...
Sorry, that was meant to be a bit of sarcasm, for - you are quite right - federal law prohibits such things. The internet is not a great place for subtlety and I forget that sometimes.
Well here is OSU's "defense," but without presenting information (hiding under the "we can't" clause), it seems like a tawdry attempt to close ranks.
http://oregonstate.edu/ua/ncs/archives/2011/mar/statement-regarding-recent-internet-postings-art-robinson