How should an originalist rule in the Fourth Amendment cell-site case?

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[Commentary] The Supreme Court recently agreed to hear Carpenter v. United States, a case on whether the Fourth Amendment protects historical cell-site records. In this post, I want to focus on a small but potentially important part of the Carpenter litigation: How should an originalist Justice vote in the case?

There are many different flavors of originalism, of course, and originalist arguments often can be used to argue for different outcomes. But in this post I want to discuss one originalist argument that I think is significant. Let’s start with the obvious: The Framers could not have imagined a world of cell-site records. And the original public meaning of the Fourth Amendment is open to a wide range of interpretations at different levels of generality. With that said, the text of the Fourth Amendment does have an important clue about what the Fourth Amendment was originally understood to mean that might be important to the Carpenter case.

[Kerr is the Fred C. Stevenson Research Professor at The George Washington University Law School]


How should an originalist rule in the Fourth Amendment cell-site case?