Supreme Court Rules Geofence Warrants Are a Search: What Chatrie Means for Florida Criminal Cases and Your Location Data

The Supreme Court just changed how the government can use your cell phone location data against you. On June 29, 2026, the Court decided Chatrie v. United States and held that running a geofence warrant, an order forcing a company like Google to hand over every device near a chosen place during a chosen window, is a search under the Fourth Amendment. The vote was 6 to 3. The Court did not decide whether the warrant was valid, sending that question back to the lower court. For anyone under federal investigation in Florida where location data is in play, the decision opens a door that was closed yesterday.

Chatrie v. United States changes the ground rules for location evidence in every federal court in the country, including Florida.

Key Takeaways

• The Supreme Court held 6 to 3 in Chatrie v. United States that running a geofence warrant is a Fourth Amendment search, so the government must satisfy warrant requirements.
• The Court did not ban geofence warrants. It sent the questions of probable cause and particularity back to the Fourth Circuit on remand.
• The Stored Communications Act, 18 U.S.C. 2703, no longer gives the government a route around the warrant standard for precise location history.
• Location data often ties a defendant to the place behind a substantive charge, such as distribution under 21 U.S.C. 841 or conspiracy under 21 U.S.C. 846, so suppression can unravel the case.
• Federal courts in Florida sit in the Eleventh Circuit and must now treat geofence and reverse location demands as searches, which makes pre-indictment suppression work the priority.

What the Supreme Court Actually Decided

A geofence warrant works backward. Instead of naming a suspect and asking for that person's records, police pick a place and a time and order a technology company to identify every device that was there. In Chatrie, investigators had a 2019 armed robbery at a Virginia credit union and no suspect. A warrant directed Google to produce location history for devices near the scene. Google turned over identifying information for a handful of users, one of whom was the defendant. That data helped convict him.

The Court held that acquiring that data was a search. Writing for the majority, Justice Kagan explained that a person keeps a reasonable expectation of privacy in records of where his cell phone has been, and the government intrudes on that interest when it demands the information, even briefly and even from a third party that stored it. That the user let Google collect the data did not strip the protection away. Location records, the Court reasoned, are more revealing than the ordinary business records the third party doctrine covers, and they are the automatic price of carrying a phone.

Here is the limit that matters. The Court answered only the first question: whether a search occurred. It did not decide whether the Chatrie warrant satisfied the Fourth Amendment, returning that question — probable cause and particularity — to the Fourth Circuit. Three justices dissented. This is a defense-favorable ruling with a defined edge, not a blanket prohibition on geofence warrants. The government can no longer treat this data as free for the taking; it has to get a warrant that meets constitutional standards.

The Court resolved only whether a search occurred. Probable cause and particularity questions return to the Fourth Circuit.

The Chatrie majority drew on Carpenter v. United States and extended its logic to geofence data, which is far more precise than cell site records. The third party doctrine does not insulate location history that is both comprehensive and involuntary.

What the Government Has Been Doing With Location Data

Reverse location demands moved from novel to routine years ago. Federal agents and Florida investigators use geofence requests, reverse keyword searches, and tower dumps to generate suspects in cases that started with nothing but a place and a time. Healthcare fraud, drug distribution, financial crimes, and violent cases now run on location evidence pulled from third parties, not from the defendant.

Before Chatrie, the government had room to argue that some of this collection was not a search at all, or that the Stored Communications Act, 18 U.S.C. 2703, let it compel stored records on a showing weaker than probable cause. That argument is much harder now. Once acquiring precise location history counts as a search, the statute cannot substitute for a warrant. Carpenter v. United States already pointed this way for cell site data. Chatrie extends the logic to the far more precise records a geofence sweeps in, which can place a device within a few meters every couple of minutes.

Geofence results convert a location on a map into a list of devices. From there, agents narrow to a named suspect.

The Stored Communications Act provided a statutory path around the Fourth Amendment warrant requirement for stored records. After Chatrie, that path is closed for precise location history.

Exposure: Where Location Evidence Shows Up in a Florida Case

In a federal prosecution, location data rarely stands alone. It is the thread that ties a defendant to a place, and from there the government builds the substantive charge, whether a fraud count, a controlled substance count under 21 U.S.C. 841, or a conspiracy under 21 U.S.C. 846. If that data is what puts a client at a clinic, a warehouse, a meeting, or a scene, the lawfulness of the warrant that produced it is the case, not a technicality.

That is why Chatrie matters in concrete terms. A warrant that swept in dozens or hundreds of uninvolved devices is now squarely a search and has to satisfy probable cause and particularity to survive. Evidence from an unlawful search can be challenged, and in the right case suppressed, which shifts the government's leverage long before trial. The same questions the Fourth Circuit will answer on remand are the ones a Florida defense lawyer raises in a motion to suppress.

When location data is the link connecting a defendant to a charged location, the suppression argument is the case itself.

Federal courts in Florida sit in the Eleventh Circuit and are bound by the Chatrie decision today. A defendant in the Southern or Middle District whose case rests on geofence evidence now has a direct basis to challenge how that data was obtained.

Critical Mistakes People Make Early

The most damaging mistakes happen before charges are filed, when people assume the case is not serious because no indictment has arrived. Talking to federal agents without a federal criminal defense attorney present is the first one. Agents who already have your location data are not fishing. They are confirming.

Producing phones, devices, or records without a strategy is the second mistake. So is assuming that because the data came from Google or a carrier rather than from your own hands, there is nothing to fight. After Chatrie, the opposite is true. The third party origin of the data is the heart of the Fourth Amendment argument, not a barrier to it. Raising the search issue after a plea forfeits it; it has to be preserved through a motion to suppress, which requires counsel engaged early, at the pre-indictment stage.

The suppression argument has to be preserved before a plea. It cannot be reconstructed afterward.

Agents who hold your location data are usually confirming a conclusion, not gathering one. Speaking without counsel risks supplying the context that turns data into a charge.

Strategic Defense Approach

Early federal investigation defense starts with mapping how the government found the client. With location data, that means getting the warrant application, the warrant, the return, and the full scope of the demand to the provider. The defense asks whether the warrant named a specific place and time or cast a wide net, whether it showed probable cause, and whether the government used the Stored Communications Act to dodge the warrant standard. Chatrie gives each question new force.

From there the decisions are strategic. A strong suppression posture changes the cooperation versus litigation calculus, because a client whose core evidence is in question negotiates from a different position. If charges proceed, the same record supports sentencing arguments about the strength of the proof. A white collar defense attorney handling a Florida federal matter should build this record now, applying the new rule to the specific warrant in the client's case.

Why Timing Matters Right Now

Two clocks are running. The first is the law's. Chatrie is decided, and federal courts in Florida — which sit in the Eleventh Circuit — are bound today. Defense lawyers no longer argue that geofence acquisition is a search; they start from the holding and move straight to particularity and probable cause. The second clock is the investigation's, and the window to influence the outcome closes once an indictment returns.

If location data is part of a matter you are facing, the preservation work cannot wait. Warrant materials have to be gathered, the data demand analyzed, and the suppression theory framed around the rule the Court just announced. That is the difference between using a favorable decision and reading about it after your case is over.

Frequently Asked Questions

Q: What did the Supreme Court decide in Chatrie v. United States?

On June 29, 2026, the Court held 6 to 3 that running a geofence warrant is a Fourth Amendment search, because a person keeps a reasonable expectation of privacy in records of his phone's location. It did not decide whether the warrant was valid, sending the probable cause and particularity questions to the Fourth Circuit.

Q: Does Chatrie mean geofence warrants are now illegal?

No. The Court did not ban geofence warrants. It held that using one is a search, so the government must satisfy the Fourth Amendment, including probable cause and particularity. A warrant that sweeps in many uninvolved devices is now far more vulnerable to suppression, but each is judged on its own facts.

Q: Can the government still get my location data without a warrant?

That path narrowed sharply. The Stored Communications Act, 18 U.S.C. 2703, once let the government seek stored records on less than probable cause. After Chatrie, acquiring precise location history is a search, so the statute cannot substitute for a warrant.

Q: Why does the Chatrie ruling matter for Florida cases?

Federal courts in Florida sit in the Eleventh Circuit and are bound by the decision. A defendant in the Southern or Middle District of Florida whose case rests on geofence or reverse location evidence now has a direct basis to challenge how that data was obtained and seek suppression.

Q: Should I talk to agents if they already have my location data?

Not without counsel. Agents who already hold your location data are usually confirming a conclusion, not gathering it. Speaking with them without a federal criminal defense attorney present risks supplying the context that turns data into a charge. Get representation before any interview.

Facing a Federal Investigation in Florida Involving Location Data?

If your matter involves a geofence warrant, a reverse location demand, or cell phone evidence, the time to examine how that data was obtained is now, while the issues can still be preserved. AMC Defense Law represents clients in federal investigations and prosecutions in Florida and nationwide. Contact the firm to arrange a confidential consultation.

If you or your loved ones are under federal investigation involving location data, call Aaron M. Cohen, 24 hours a day to get help.

This article is for general informational purposes only and does not constitute legal advice. The information above describes the Chatrie v. United States decision issued June 29, 2026 and its implications for federal defense in Florida. Outcomes in any individual case depend on facts, jurisdiction, and developments after publication. Reading this article does not create an attorney-client relationship with AMC Defense Law or any of its attorneys. For advice specific to your situation, contact a licensed federal criminal defense attorney directly.