His case, Southworth vs. University of Wisconsin Board of Regents, is taking up space in the Supreme Court right now. Southworth's premise is a direct affront to the First Amendment and the ideas this country was founded upon. Students who pay their activity fees are not betraying their beliefs by supporting clubs they wouldn't ever join, they are championing involvement and action. People who say they don't want their pennies going to a specific group are, in effect, saying they don't want others to have an outlet for their beliefs and feelings.
Student activities provide a forum for people's thoughts and actions.
Taking away group's funds is like censorship, and baby, that's at best un-American and at worst the greatest enemy of every developing mind. Last year, Montanans for Better Government threatened to take ASUM to court for providing voter guides to students. The result of ASUM's actions was that more students turned out to vote in last year's state election than ever before. Likewise, more dorm students voted in this year's city election than in any other. Southworth's backers would contend that if someone doesn't approve of what ASUM did, they ought to get their money back - and a few students did.