Geofence Warrants at the Supreme Court: What Chatrie Means for Florida Criminal Cases

If the government built part of its case against you from cell phone location data, the Supreme Court is about to decide how much of that evidence was lawfully obtained. The case is Chatrie v. United States. It asks whether a geofence warrant, which orders a company like Google to hand over every device that passed through a chosen area during a chosen window, is a search under the Fourth Amendment, and what police have to show before they can run one. The Court heard argument in April 2026 and a decision is expected before the term ends this summer. For anyone facing a federal investigation in Florida where location data is in play, the ruling will matter in concrete ways.

Geofence warrants capture every device in a chosen area during a chosen time window. The person holding the phone may never know.

What the Chatrie Case Actually Decides

A geofence warrant works backward from the usual investigation. Instead of naming a suspect and asking for that person's records, police identify a place and a time and ask a technology company to identify every device that was there. In Chatrie, investigators had a 2019 armed robbery at a Virginia credit union, no named suspect, and a warrant directing Google to produce location data for devices near the scene. One of those devices was tied to the defendant, and that data helped convict him.

The case reached the Supreme Court after a fractured lower court. The judges split evenly on the core question of whether a Fourth Amendment search even occurred, with one camp finding no search because two hours of location history had been exposed to Google, and the other camp finding that a search plainly happened. The Supreme Court granted review and heard argument in April 2026.

By most accounts the justices were divided. That division is the whole point for defense lawyers, because a closely contested ruling usually produces a rule with real limits that can be argued both ways in future cases.

What the Government Is Actually Doing with Location Data

Reverse location demands have moved from novel to routine. Federal agents and Florida state investigators use geofence requests, and the related reverse keyword and tower dump techniques, to generate suspects in cases where they started with nothing but a location. Healthcare fraud, drug distribution, financial crimes, and violent offenses all now feature digital location evidence pulled from third parties rather than from the defendant directly.

The mechanics matter because they decide which legal standard applies. The Fourth Amendment requires a warrant supported by probable cause and particularity. The Stored Communications Act, title 18 United States Code section 2703, sets out a separate statutory path for compelling stored records, and parts of it allow a court order on a showing weaker than probable cause. The government has at times leaned on the statute to argue that a full warrant was not required.

Chatrie is the case that forces the Court to address how the constitutional rule and the statutory framework fit together for location data that is far more precise than the cell site information the Court already addressed in Carpenter v. United States.

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 that is a fraud count, a controlled substance count under title 21 United States Code section 841, or a conspiracy under title 21 United States Code section 846. If the location evidence is the link that puts a client at a clinic, a warehouse, a meeting, or a scene, then the lawfulness of the warrant that produced it is not a technicality. It is the case.

That is why the Fourth Amendment question in Chatrie and the reach of title 18 United States Code section 2703 are worth watching closely. If the Court holds that geofence warrants are searches that demand probable cause and real particularity, then a warrant that swept in dozens or hundreds of uninvolved devices becomes vulnerable. Evidence that flows from an unlawful search can be challenged, and in the right case suppressed, which can change the government's leverage long before trial.

Critical Mistakes People Make Early

The most damaging mistakes happen before charges are filed, when people assume the investigation 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. The opposite is true. The third party origin of the data is exactly what the Fourth Amendment fight is about.

Waiting until after a plea to raise the search issue forfeits it. These arguments have to be preserved on the record through a motion to suppress, and that requires counsel engaged early, during the pre-indictment stage.

Strategic Defense Approach

Early federal investigation defense starts with mapping how the government found the client. When location data is involved, that means obtaining the warrant application, the warrant itself, the return, and the full scope of what was demanded from the provider.

The defense looks at whether the warrant described a specific place and time or cast a wide net, whether it established probable cause for the intrusion, and whether the government relied on the Stored Communications Act to avoid the warrant standard.

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 and reliability of the proof. A white collar defense attorney handling a Florida federal matter should be building this record now, with Chatrie pending, so the client is positioned to use the ruling the moment it lands.

The suppression theory has to be built from the warrant application and return, not reconstructed after a plea.

Why Timing Matters Right Now

Two clocks are running. The first is the Supreme Court's. A decision in Chatrie is expected before the term closes this summer, and when it arrives it will set the rule that federal courts in Florida, which sit in the Eleventh Circuit, apply to geofence and reverse location evidence.

The second clock is the investigation's. Charging decisions stay fluid early, and the window to influence them closes once an indictment is returned. If location data is part of a matter you are facing, the preservation work cannot wait for the opinion. Warrant materials have to be gathered, the data demand has to be analyzed, and the suppression theory has to be framed so it is ready to be sharpened the day the Court rules.

That is the difference between using a favorable decision and reading about it after your case is over.

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 have been arrested or 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 federal geofence warrant law and the Chatrie v. United States case as of June 2026. 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.