Oral Argument: Chatrie v. United States

Chatrie v. United States | Case No. 25-112 | Docket Link: Here

Oral Advocates:

• Petitioner (Chatrie): Adam G. Unikowsky of Jenner & Block
• Respondent (United States): Eric J. Feigin of the Department of Justice

Question Presented: Whether the execution of a geofence warrant — compelling Google to search the location data of all users to identify devices near a crime scene — violated the Fourth Amendment.

Overview: Police ordered Google to scan hundreds of millions of users' private location records to catch a bank robber, without naming any suspect. The Court now decides whether geofence warrants survive the Fourth Amendment's ban on general searches.

Posture: Fourth Circuit en banc affirmed denial of suppression in a single-sentence per curiam opinion.

Main Arguments:

• Chatrie (Petitioner): (1) Location History data constitutes Chatrie's property, making government access a trespass; (2) The warrant operated as an unconstitutional general warrant by compelling Google to search all users without individualized probable cause; (3) Each warrant step independently failed particularity and probable cause requirements
• Government (Respondent): (1) Chatrie voluntarily opted into Location History, triggering the third-party doctrine and forfeiting any privacy claim in two hours of public movements; (2) Chatrie's property theory was forfeited below and lacks any foundation in American law; (3) The magistrate-issued warrant satisfied probable cause and particularity, and the good-faith exception independently bars suppression

Implications: A Chatrie victory likely ends geofence warrants as currently used — law enforcement would need to identify specific accounts before any search, fundamentally limiting their ability to identify unknown suspects through third-party tech platforms. It could also extend Fourth Amendment property protection to cloud-stored data broadly. A government victory grants constitutional clearance for geofence warrants and reaffirms the third-party doctrine against digital location data, exposing every opted-in user's movements to law enforcement access whenever a crime occurs nearby — including near places of worship, political gatherings, or medical facilities.

The Fine Print:

• Fourth Amendment: "The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no Warrants shall issue, but upon probable cause, supported by Oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized."
• 18 U.S.C. § 2703(a) (Stored Communications Act): Requires a warrant for the government to compel disclosure of the contents of electronic communications stored for 180 days or fewer — a provision Chatrie argues supports a broader Fourth Amendment warrant requirement for location data.

Primary Cases:

• Carpenter v. United States (2018): The Court held that seven or more days of cell-site location information triggers Fourth Amendment protection, declining to apply the third-party doctrine where data reveals the intimate patterns of daily life — Chatrie's central precedent
• Smith v. Maryland (1979): Established the third-party doctrine — a person who voluntarily shares information with a third party "assumes the risk" of disclosure to law enforcement and forfeits Fourth Amendment protection — the government's bedrock authority

Timestamps:

[00:00:00] Argument Preview

[00:01:21] Oral Advocates

[00:01:29] Argument Begins

[00:01:37] Chatrie Opening Statement

[00:02:55] Chatrie Free for All Questions

[00:26:57] Chatrie Round Robin Questions

[00:58:35] United States Opening Statement

[01:01:05] United States Free for All Questions

[01:28:53] United States Round Robin Questions

[01:56:42] Chatrie Rebuttal