Hastings College of the Law, a public law school in California, has a policy prohibiting discrimination on the basis of "race, color, religion, national origin, ancestry, disabilities, age, sex or sexual orientation." In 2004, the Christian Legal Society, a religious student organization at the school, applied to become a "recognized student organization" — a designation that would have allowed CLS to receive a variety of benefits afforded to about 60 other Hastings groups. While all are welcome to attend CLS meetings, CLS's charter requires that its officers and voting members abide by key tenets of the Christian faith and comport themselves in ways consistent with its fundamental mission, which includes a prohibition on "unrepentant" sexual conduct outside of marriage between one man and one woman. Hastings denied CLS registration on the asserted ground that this charter conflicts with the school's nondiscrimination policy. CLS sued Hastings, asking for no different treatment than is given to any registered student group. The district court granted Hastings summary judgment and the Ninth Circuit affirmed. The Supreme Court granted certiorari to determine whether Hastings's refusal to grant CLS access to student organization benefits amounted to viewpoint discrimination, which is impermissible under the First Amendment. Cato filed an amicus brief supporting CLS, in which we argue that CLS's right to intimate and expressive association trump any purported state interest in enforcing a school nondiscrimination policy. While Hastings may impose reasonable restrictions on access to limited public forums, it should not be allowed to admit speakers with one point of view while excluding speakers who hold different views. Our brief also discredits Hastings's assertion that its ability to exclude the public at large from school premises renders their content-based speech restrictions constitutional. We urge the Court to safeguard public university students' right to form groups — which by definition exclude some people — free from government interference or censorship.