Chatrie and the Geofence Warrant the Supreme Court Must Judge

For the first time, the Supreme Court is weighing whether the geofence warrant — a tool that orders Google to comb its store of location data for every device near a crime scene — can be squared with the Fourth Amendment. The vehicle is Chatrie v. United States, No. 25-112, which the Court agreed to hear on January 16, 2026 and argued on April 27. As of late June 2026 no opinion has issued, and the argument left the outcome genuinely unsettled. What is settled is the stakes: a ruling here will shape how investigators may treat the digital trails that hundreds of millions of phones generate without their owners thinking about it. What follows is commentary and analysis, not legal advice.

How the case reached the Court

In May 2019, the Call Federal Credit Union in Midlothian, Virginia was robbed at gunpoint. With the investigation stalled, police obtained a geofence warrant directing Google to identify devices recorded inside a circle 150 meters in radius centered on the bank during the relevant window. That circle swept in far more than the crime scene — it covered public streets, nearby homes, a hotel, a church, and a restaurant. The data pointed to Okello Chatrie, whose location history placed him at the scene; that lead produced a follow-on warrant for his home and, ultimately, a conviction.

The district court for the Eastern District of Virginia concluded the warrant likely ran afoul of the Fourth Amendment but declined to suppress the evidence, invoking the good-faith exception to the exclusionary rule. On en banc review, the Fourth Circuit affirmed in a one-sentence per curiam order. The fractured reasoning is the tell: the fifteen-judge court split 7–7 on whether a search even occurred, with the chief judge declining to reach the question, yet the judges converged on good faith as the disposition. That posture — deep disagreement on the merits, agreement only on the off-ramp — is what the Supreme Court inherited.

The constitutional fault line

The doctrinal heart of the dispute is the third-party doctrine and its limits. Under the traditional rule, information voluntarily turned over to a third party carries no reasonable expectation of privacy. The government leans on that principle: a user enables Location History, the data sits with Google, and querying Google is not searching the user. Chatrie counters that location data is categorically different — sensitive, comprehensive, and revealing of the intimacies of a life — and therefore protected notwithstanding Google’s possession.

That argument draws directly on Carpenter v. United States, 585 U.S. 296 (2018), where the Court held that acquiring historical cell-site location data is a search requiring a warrant, declining to extend the third-party doctrine mechanically to the digital age. The unresolved question is how far Carpenter reaches. A geofence differs in structure from the targeted records there: rather than tracking one known suspect, it begins with a place and time and works backward to whoever was present, requiring Google to scan an enormous user base before anyone is named.

What the argument revealed

The April 27 argument showed a divided bench. Several justices pressed the privacy claim. Justice Gorsuch worried that a ruling for the government could expose cloud-stored emails, photos, and documents to warrantless access on the theory that they, too, sit with a third party. Justice Kagan questioned whether the law should protect only ordinary “patterns of life” while leaving exposed the sensitive instances — attending a political event or visiting a clinic — that a geofence might capture. Justice Sotomayor noted that the trial court had doubted the voluntariness of any consent and that disabling location tracking is, in her words, hard and opaque for ordinary users.

Others were skeptical. Chief Justice Roberts asked why a troubled user would not simply turn the feature off, though he separately voiced concern about geofences trained on churches or political organizations. Justice Alito stressed that enabling Location History takes deliberate steps, and Justice Kavanaugh characterized the detective’s narrowing of the data as good police work. Justice Barrett emphasized that brief movements in public spaces have not traditionally been treated as private.

The likely shape of a ruling

Two narrow paths drew interest at argument. One is a particularity holding: a warrant of this kind must be specific as to time and place and must justify the geographic and temporal scope it claims — an approach Justice Sotomayor floated as useful guidance that would not require deciding the larger expectation-of-privacy question. The other is the good-faith route described above, which would resolve the case while deferring the constitutional merits entirely.

Either narrow path would leave the lower courts without a definitive answer on whether geofence queries are searches at all — a question on which the Fourth Circuit itself deadlocked. A broader ruling would carry further. A decision that location data retains Fourth Amendment protection despite third-party possession would extend Carpenter‘s logic and constrain a now-common technique; a decision the other way would entrench the third-party doctrine in an era when the third party holds nearly everything.

Why the outcome matters beyond one robbery

The geofence sits alongside a family of dragnet tools — reverse keyword-search warrants, automated license-plate readers, and law-enforcement purchases of data from commercial brokers — that share the same structure: start with no suspect, search a population, and identify a target. How the Court frames the geofence question will inform how courts and legislatures treat that whole category. The deeper debate over location dragnets is canvassed in the analysis of geofence warrants and the Fourth Amendment, and developments are followed in the commentary and the case tracker.

The Court is expected to decide Chatrie before the term concludes. Whether the justices reach the merits or take an off-ramp, the case marks the first time the highest court has confronted the geofence directly — and the reasoning, even in a narrow opinion, will signal how durable digital privacy is when the data lives somewhere other than the phone in a pocket.