First Amend-what?

Two things stick out here. First, he's punished for "posting his view on an online forum not related to the univeristy." What right do they have to monitor his personal time? Second, what is a CATHOLIC university pushing this agenda for in the first place?

Ryan Miner, 19, of Hagerstown, Md., was sanctioned by the university for posting his view on an online forum not related to the university.

He opposed an effort by other students to form a Gay-Straight Alliance group, an issue still being debated by the Catholic university.

Source: Duquesne U. student punished for remarks about gays