Supreme Court Likely to Uphold Constitutionality of Geofence Warrants in Chatrie Case

The U.S. Supreme Court held oral arguments this morning in Chatrie v. United States, a landmark case examining the constitutionality of geofence warrants. The two-hour session was live-tweeted on X (formerly Twitter) and Bluesky for real-time updates. Below are key takeaways from the proceedings.

Key Takeaways from the Oral Arguments

1. Likely Rejection of Broad Challenges to Geofence Warrants

Justices appeared poised to reject Chatrie’s arguments that geofence warrants are categorically unconstitutional or inherently incapable of identifying suspects constitutionally. The Court seems inclined to uphold the use of geofence warrants, provided they are narrowly tailored in time and scope—a view that diverges from the Fifth Circuit’s ruling in Smith v. United States.

Several Justices, including Sonia Sotomayor and Ketanji Brown Jackson, expressed concerns about Google’s multi-step warrant process. They suggested that each step of data retrieval might require a separate warrant, though it remains unclear whether the majority will adopt this approach.

2. Uncertainty Over Whether a 'Search' Occurred

The Court may avoid ruling on whether accessing location history constitutes a 'search' under the Fourth Amendment. Instead, it could assume a search occurred and focus solely on the warrant’s constitutionality. During arguments, the government conceded that cloud-stored records—such as calendar entries or photos—might receive stronger protections if users directly control them, akin to a 'virtual private locker.' However, the Court may sidestep this issue entirely.

3. Government’s Conciliatory Stance and Broader Implications

The government’s relatively subdued responses late in the argument surprised observers. This shift may reflect confidence in prevailing on the warrant issue, avoiding risks to its position. Notably, the government did not strongly rebut claims that its arguments were overly expansive or that practical challenges existed in obtaining warrants for location data.

Justice Samuel Alito’s precedent in Smith v. Maryland was cited, reinforcing that voluntarily disclosed location data revealing home presence does not constitute a search. Additionally, the Court noted that the technology for retrieving location history no longer exists, and probable cause was not contested when such data was accessible.

Looking ahead, the Court’s focus may extend beyond geofence warrants to other digital records, such as IP logins, which lower courts have historically treated as non-warrant-required data. A ruling on the 'search' question could significantly alter investigative practices involving online records.

"What matters going forward is all the other online records that exist online: IP logins, etc. Those are records that lower courts have held don't require warrants, and it would be a massive shift in practice if the Court ruled on the search issue in ways that implicated those different records."

What’s Next for Geofence Warrants?

The Supreme Court’s eventual ruling in Chatrie v. United States will shape the legal landscape for geofence warrants and digital privacy. While the Court appears inclined to uphold narrowly tailored geofence warrants, the broader implications for online surveillance and law enforcement practices remain uncertain. Observers will closely monitor the decision, expected in mid-2025, for its impact on Fourth Amendment protections in the digital age.