Final answer:
Anthony Kennedy played a crucial role in the Citizens United decision as the swing vote that determined the outcome. The Supreme Court ruled that campaign contributions from corporations and unions are protected free speech under the First Amendment.
Step-by-step explanation:
Anthony Kennedy is important in the Citizens United decision because he was the swing vote that ultimately determined the outcome of the case. In a 5-4 decision, the Supreme Court ruled in favor of Citizens United, stating that campaign contributions from corporations and unions are a form of protected free speech under the First Amendment. Kennedy's vote in favor of this ruling was crucial in shaping the landscape of campaign finance in the United States.
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