Courts & Litigation Criminal Justice & the Rule of Law

Document: Supreme Court Rules in Carpenter that Law Enforcement Must Seek Warrant for Cell-Site Location Information

Matthew Kahn
Friday, June 22, 2018, 10:26 AM

The Supreme Court ruled on Friday in Carpenter v. United States that the acquisition of cell-site data is a Fourth Amendment search. The full opinion is below.

The Supreme Court ruled on Friday in Carpenter v. United States that the acquisition of cell-site data is a Fourth Amendment search. The full opinion is below.


Matthew Kahn is a third-year law student at Harvard Law School and a contributor at Lawfare. Prior to law school, he worked for two years as an associate editor of Lawfare and as a junior researcher at the Brookings Institution. He graduated from Georgetown University in 2017.
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