Justice Stevens, joined by Justices Ginsburg, Breyer, and Sotomayor, agreed that the disclosure provisions were valid but dissented from the invalidation of the corporate-expenditure limits. He argued that Citizens United could have used its PAC to finance the film and therefore had not been silenced; the case concerned the source of funds for electioneering during a limited pre-election period, not a complete ban on corporate speech.
He maintained that the Court improperly converted an as-applied challenge into a facial challenge after Citizens United had dismissed its facial claim. In his view, the Court should have resolved the case through a narrower statutory interpretation, an expanded nonprofit exemption, or an ordinary as-applied ruling rather than overturning Austin and McConnell without a developed factual record.
Justice Stevens argued that corporations differ materially from natural persons in elections. They cannot vote or hold office; may be controlled by foreign interests; enjoy perpetual life, limited liability, and special capacity to aggregate wealth; and often pursue economic rather than political objectives. Those features, he argued, allow legislatures to regulate corporate electoral spending more carefully without treating corporations as second-class speakers.
He rejected the majority's narrow definition of corruption. In his view, corruption includes not only explicit quid pro quo bargains but also undue influence, access, dependency, and public perceptions that officeholders are responsive to large financial supporters rather than constituents. The congressional record supporting BCRA showed that corporate electioneering could generate precisely those political debts and appearances.
He defended Austin's antidistortion rationale as an anticorruption and democracy-protecting measure, not as an unconstitutional effort to equalize voices. Corporate general-treasury funds may reflect commercial success rather than public support for political ideas, and unregulated spending can drown out other voices, foster cynicism, and impair voters' confidence in self-government.
He also emphasized shareholder protection. General-treasury election spending can use shareholders' investments to advance political views they reject. PACs protect both willing supporters and dissenters by tying election expenditures to voluntary political contributions, while ordinary corporate-governance remedies are often too weak or impractical to protect individual investors.