Key figures: Chief Justice John G. Roberts Jr., Justice Anthony Kennedy, Justice Samuel Alito, Justice Clarence Thomas, Justice Antonin Scalia (majority); Justice John Paul Stevens, Justice Ruth Bader Ginsburg, Justice Stephen Breyer, Justice Sonia Sotomayor (dissent).
Summary
On January 21, 2010, the United States Supreme Court issued a 5-4 decision in Citizens United v. Federal Election Commission, striking down key provisions of the Bipartisan Campaign Reform Act of 2002 (McCain-Feingold). The majority held that the First Amendment prohibits the government from restricting political spending by corporations and unions. The ruling opened the door to unlimited independent expenditures by Super PACs and fundamentally transformed the landscape of campaign finance in American elections.
Justice Anthony Kennedy wrote for the majority that restrictions on political spending constituted an unconstitutional restriction on free speech. The Court overturned Austin v. Michigan Chamber of Commerce (1990) and cast doubt on portions of McConnell v. Federal Election Commission (2003). The decision invalidated provisions banning corporations and unions from using general treasuries to fund independent political advertisements. The dissenting justices, led by Justice John Paul Stevens in a 90-page dissent, warned that the ruling would open the floodgates to corporate influence in politics.
Background and Legal Origins
The case originated with Citizens United, a nonprofit conservative advocacy group that produced a 90-minute film critical of Hillary Clinton titled Hillary: The Movie in 2008, intending to distribute it via video-on-demand during the Democratic primary. The FEC ruled that the film violated the BCRA’s prohibition on corporate-funded “electioneering communications” within 30 days of a primary or 60 days of a general election. Citizens United sued, arguing the restriction violated their First Amendment rights.
The case was initially argued before the Supreme Court on March 24, 2009. After oral argument, the Court ordered supplemental briefing and re-argument in September 2009 on a broader constitutional question: whether Austin and McConnell should be overruled entirely. This expansion of scope signaled the Court’s intent to issue a sweeping ruling rather than a narrow one.
The Ruling and Dissent
The majority opinion, penned by Justice Kennedy, rested on two core propositions: that political speech does not lose constitutional protection simply because its speaker is a corporation rather than an individual, and that independent expenditures — spending not coordinated with a candidate — cannot corrupt officeholders or create the appearance of corruption. The Court upheld disclosure requirements, meaning outside groups must still report their donors when running election-related ads.
Justice Stevens’s dissent argued that the majority’s position ignored two centuries of legal tradition, the text of the Constitution, and the practical realities of corporate power in politics. He wrote: “The Court’s ruling threatens to undermine the integrity of elected institutions across the Nation.” The four dissenting justices contended that corporations, as legal fictions granted rights by the state, have no inherent First Amendment claim to unlimited political spending.
Immediate Political Reaction
The ruling’s public debut came six days later, when President Barack Obama criticized it directly during his January 27, 2010 State of the Union address — with members of the Supreme Court seated in the front row. Obama said the decision “reversed a century of law” and would “open the floodgates for special interests.” Justice Samuel Alito visibly shook his head and mouthed “not true,” creating one of the more unusual moments in State of the Union history.
Aftermath: Rise of Super PACs
The practical consequence emerged quickly. On March 26, 2010, the United States Court of Appeals for the D.C. Circuit, relying on Citizens United, ruled unanimously (en banc) in SpeechNow.org v. Federal Election Commission that individuals and organizations could make unlimited contributions to independent political spending groups, effectively creating “Super PACs.” By the 2010 midterm elections — held just months after the ruling — outside spending by these new entities totaled approximately $300 million, compared to roughly $69 million in 2006. By the 2012 presidential cycle, Super PACs raised more than $828 million; total outside spending across all groups exceeded $1 billion for the first time in American history.
The ruling also fueled the rise of politically active 501(c)(4) nonprofits, so-called “dark money” groups that could spend unlimited amounts on elections without publicly disclosing their donors. Both the 2010 midterm elections and every subsequent federal election cycle saw record outside spending traceable in part to the constitutional framework established by Citizens United.
Long-Term Significance
Citizens United remains among the most contested Supreme Court decisions of the 21st century. Supporters argue it correctly protected free expression for all speakers. Critics — including the four dissenting justices, President Obama, and many campaign finance scholars — contend it unleashed a wave of money that distorts democratic representation. Multiple attempts in Congress to pass legislation limiting Super PAC spending or mandating donor disclosure failed to advance through the Senate, in part due to disagreements about constitutional constraints the ruling imposed.
In the decade following the decision, spending in federal elections increased dramatically: the 2020 presidential election cycle saw total spending exceed $14 billion, more than double the 2016 total. The ruling shaped debate not only over campaign finance but over corporate personhood, the nature of First Amendment rights, and the integrity of democratic institutions.