In Citizens United vs. FEC, the Supreme Court struck down a Federal statute banning direct corporate expenditures on political campaigns. The decision has been widely criticized and praised as a matter of First Amendment law. But it is also interesting as another step in the evolution of our legal views of the corporation. This article argues that by viewing Citizens United through the prism of theories about the corporate form, it is possible to see that the majority and the dissent departed from previous Supreme Court jurisprudence on the First Amendment rights of corporations. It is also possible to then predict what arguments can be expected next.