Put the Katz Back in the Bag: Restoring Privacy Rights in the Digital Age
Tommy Scherrer
The word “privacy” appears nowhere in the Constitution, yet the Supreme Court has recognized that a constitutional right to privacy emerges from certain “penumbras, formed by emanations” of guarantees in the Bill of Rights.[1] Of these guarantees, that of the Fourth Amendment provides the clearest architecture for a right to privacy by recognizing the individual citizen’s dominion over their “persons, houses, papers, and effects,” and requiring the government to justify any intrusion.[2] This article argues for a restoration of the American privacy regime to this original foundation: enforceable boundaries that empower individuals to control access to their lives.
I. Introduction
The Court complicated the foundations of American privacy rights in Katz v. United States when it reimagined privacy rights as a matter of “reasonable expectations.”[3] That formulation was intended to liberalize the Fourth Amendment and extend its protections beyond physical trespass. However, by grounding privacy rights in what a small group of lawyers believe society recognizes as “reasonable,” the Court detached protection from the concrete boundaries of the Constitution and created an ambiguous standard. As we journey further into the 21st century, and state and private surveillance become normalized as necessary to a secure society, our general expectation of privacy is shrinking rapidly, and our rights are shrinking with it.
The text of the Constitution protects citizens through their persons, homes, papers, and effects—real places and things that anchor enforceable boundaries. Katz inverted that logic by replacing hardline rules with shifting baselines and mistaking trust for consent to surveillance. In the decades that followed, this logic hardened into the third-party doctrine, which holds that any information shared with others loses constitutional protection.[4] The consequences of this doctrine are especially harsh in today’s world, when nearly all personal information flows through third parties. If privacy rights are to remain a foundation of democratic life, they need to be grounded in some sort of enforceable boundary. Because today’s data and the inferences drawn from it can reach further into private life than any physical trespass, the protections of the Fourth Amendment must be interpreted with that reality in mind.
