"It’s a really interesting question about a law enforcement tool that would have been unimaginable a few decades ago," said John Villasenor, summarizing the practical and constitutional stakes as the Supreme Court prepares to hear oral arguments Monday in Chatrie v. The United States.
Chatrie v. The United States: the narrow dispute and its reach
The case centers on so-called geofence warrants — orders that compel companies to disclose data about all devices present in a particular area during a specified time window. In the matter before the Court, police used a geofence warrant to obtain Google records covering a one-hour period and a 17.5-acre area; that data played a role in the conviction of Okello Chatrie for a 2019 bank robbery. Courts below have been divided over whether that form of warrant satisfies the Fourth Amendment’s specificity and probable cause requirements.
Google, the government, and amici positions
Several parties have filed briefs that frame the legal conflict in sharply different terms. The United States told the Court that Chatrie opted into Google’s storage of his location history and argued that such information is not substantially different from physical markers of presence, like tire tracks or boot prints, invoking the traditional “third-party” rationale that information disclosed to a third party generally carries no reasonable expectation of privacy.
Google itself said it takes no position on the particular warrant in Chatrie’s case but urged the Court to hold that Google Location History and similar remotely stored digital documents deserve Fourth Amendment protection, warning that a contrary rule would expose "the intimate details of millions of Americans' daily lives" to warrantless surveillance. A coalition of 32 state attorneys general and some law professors have sided with the government, while both conservative and liberal civil liberties advocates have lined up for the petitioner.
Precedent in play: Carpenter and the third‑party doctrine
Both parties invoke Carpenter v. The United States, the 2018 decision that restricted the third‑party doctrine when it came to 127 days of cell-site location information by treating that collection as a Fourth Amendment search. Advocates for Chatrie point to Carpenter as a pathway to broader privacy protections for remotely stored, long-form digital records. The government, by contrast, stresses similarities between geofence data and traditional evidence of presence.
The good‑faith exception and lower‑court fracture
A Virginia court ruled the geofence warrant unconstitutional because it was neither sufficiently specific nor supported by probable cause as to every user whose data the warrant swept up. That same court nonetheless admitted the evidence, applying the exclusionary rule’s "good faith" exception on the theory that law enforcement reasonably believed the warrant lawful. Villasenor noted the Supreme Court could clear significant doctrinal clutter by addressing that exception — a tool lower courts have used to avoid reaching sweeping constitutional holdings. But he and others warned the justices might also stop short of a definitive ruling.
How civil liberties advocates, prosecutors, and tech companies are positioned
- Civil liberties advocates: Both conservative and liberal groups back the petitioner, arguing courts should recognize a property interest in many digital records and prevent warrantless government access that would hollow out Fourth Amendment protections. The Cato Institute filed an amicus brief representing those concerns, with Brent Skorup arguing that allowing unfettered access to digital records would render the Fourth Amendment "pretty empty."
- Prosecutors and state attorneys general: Thirty-two attorneys general have sided with the U.S. government, signaling that many law-enforcement officials view geofence warrants as a useful investigatory tool and see the third‑party doctrine as applicable to data disclosed to providers.
- Technology companies: Google has altered how it handles location data — moving records to devices rather than storing them in the cloud — and has urged the Court to affirm Fourth Amendment protections for remotely stored digital documents, warning of broader exposure if the government’s view prevails.
Beyond location history, advocates warn that the Court’s decision could ripple into other categories of digital information: financial records, search histories, and even records generated by conversational systems and chatbots. That broader scope is one reason the case has attracted filings from diverse quarters and why some observers think the Court faces a difficult choice between a clear rule and a fractured, narrow opinion.
The justices will weigh whether geofence warrants — a technique born of modern device ecosystems — can be squared with longstanding search-and-seizure protections, whether the good‑faith exception keeps contested evidence in play, and how far Carpenter’s limits on the third‑party doctrine extend. The outcome could narrow or expand government access to a wide range of digital records, and it will do so in a case tied to a single one-hour, 17.5-acre data sweep that already produced a criminal conviction.
Read the original CyberScoop story: https://cyberscoop.com/supreme-court-geofence-warrants-chatrie-case/
