Published on The Democrat News

Campaign Finance Law After Citizens United

The Supreme Court's 2010 decision in Citizens United v. FEC fundamentally transformed American campaign finance law. By holding that the government cannot restrict independent political expenditures by corporations, associations, and unions, the Court unleashed a wave of outside spending that has reshaped how elections are financed.

Before and After Citizens United

Prior to Citizens United, the Bipartisan Campaign Reform Act (McCain-Feingold) prohibited corporations and unions from using their treasury funds for electioneering communications within 30 days of a primary or 60 days of a general election. The Citizens United decision struck down this prohibition, holding that it violated the First Amendment rights of corporations. In the wake of the decision, outside groups — particularly 501(c)(4) social welfare organizations and super PACs — dramatically increased their political spending.

Super PACs and Dark Money

Citizens United enabled the creation of super PACs — independent expenditure-only committees that can raise and spend unlimited sums from individuals, corporations, and unions, provided they do not coordinate with candidates. Separately, 501(c)(4) organizations can engage in political activity as long as it is not their primary purpose; unlike super PACs, they are not required to publicly disclose their donors, creating what critics call dark money in elections.

Disclosure Requirements

Even post-Citizens United, federal law requires disclosure of significant political spending. Campaigns, party committees, and PACs must disclose contributors over certain thresholds. The ongoing policy debate concerns whether the current disclosure framework adequately informs voters about the ultimate sources of political spending, particularly given the role of intermediary nonprofit organizations that accept large donations without disclosure.

McCutcheon and Aggregate Limits

Citizens United was not the last major campaign finance ruling. In McCutcheon v. FEC (2014), the Supreme Court struck down the aggregate limits on how much an individual could donate to all federal candidates and party committees combined during a two-year election cycle. While contribution limits to individual candidates remained intact, McCutcheon further reduced barriers to large-scale political giving. Together, Citizens United and McCutcheon significantly expanded the avenues through which wealthy individuals and organisations can influence federal elections.

The Rise of Super PACs

Immediately following Citizens United, the D.C. Circuit's decision in SpeechNow.org v. FEC (2010) cleared the way for independent expenditure-only committees — super PACs — to accept unlimited contributions from any source. Super PACs cannot directly contribute to candidates or coordinate with their campaigns, but they can spend unlimited amounts on independent expenditures advocating for or against candidates. By the 2020 election cycle, outside spending from super PACs and other independent organisations exceeded $3 billion, according to Federal Election Commission data.

Dark Money and 501(c)(4) Organisations

The most controversial development post-Citizens United has been the proliferation of dark money — political spending by 501(c)(4) social welfare organisations that are not required to publicly disclose their donors. Unlike super PACs, which must report contributors to the FEC, 501(c)(4)s can accept unlimited donations anonymously as long as political activity is not their primary purpose. Critics argue this creates a two-tier system in which well-resourced interests can influence elections with complete opacity. Defenders contend that mandatory disclosure would chill constitutionally protected political speech and association.

Legislative and Regulatory Responses

Congress has repeatedly attempted to address the disclosure gap. The DISCLOSE Act — which would require certain politically active organisations to disclose their large donors — has passed the House multiple times but consistently failed to advance in the Senate. The FEC, the agency responsible for enforcing campaign finance law, has frequently deadlocked along partisan lines on enforcement, leaving many Citizens United-era questions unresolved at the regulatory level. State legislatures have enacted a wide range of responses, from comprehensive disclosure requirements to their own constitutional amendments mirroring the federal framework.

The Ongoing Democratic Debate

Campaign finance remains one of the most contested areas of American election law, touching fundamental questions about the relationship between money, speech, and democratic participation. Those who support the Citizens United framework argue that political spending is a form of constitutionally protected expression and that government restrictions on it are inherently suspect. Critics argue that unlimited outside spending allows wealthy interests to drown out ordinary citizens and creates at minimum the appearance of corruption even when explicit quid pro quo arrangements are absent. This debate will continue to shape legislation, litigation, and election administration for decades.