Citizens United v. Federal Election Commission primarily dealt with what issue?

Citizens United v. Federal Election Commission is a landmark Supreme Court case that primarily focused on the interplay between campaign finance laws and free speech as guaranteed by the First Amendment. The Court ruled that corporations and unions could spend unlimited amounts of money on political campaigns, asserting that such spending is a form of protected free speech. This decision has had significant implications for the landscape of American politics, particularly regarding the influence of money in elections and the ability of corporate entities to engage in political advocacy.

The case was rooted in the issue of whether the government could limit political expenditures made by independent organizations, which led to the conclusion that restrictions violate constitutional protections of free speech. This pivotal decision fundamentally reshaped the rules governing political donations and advertising, emphasizing the relationship between financial resources and the exercise of free expression in the political arena. Thus, the correct answer highlights the critical nexus between campaign finance and the concept of free speech within the context of U.S. law and politics.