Fourth Amendment: Supreme Court rules against ICE for location tracking

The U.S. Supreme Court has issued a landmark ruling, establishing that the government must comply with the Fourth Amendment when seeking to access individuals' location data. This decision significantly restricts agencies like Immigration and Customs Enforcement (ICE) from arbitrarily obtaining this sensitive information, reinforcing privacy protections for citizens.

With a six-to-three majority, the court affirmed that individuals maintain a reasonable expectation of privacy regarding their movements, even when that data is stored by companies such as Google. Consequently, authorities will now face stricter constitutional requirements before accessing such records. Justice Elena Kagan, writing for the majority, stated, "The Fourth Amendment must, as always, protect against the government’s unjustified intrusion on the individual’s privacy."

The ruling directly impacts ICE's methods for locating migrants within the U.S. Previously, the agency utilized technologies like geofence warrants to gather location data. Now, the use of such data is subject to heightened restrictions. The court determined that accessing these records constitutes a "search" under the Fourth Amendment, requiring lower courts to assess whether each geofence warrant meets constitutional standards for probable cause and particularity.

Geofence warrants allow authorities to request location records from tech companies for devices present in a specific area during a set time. This tool had been employed in criminal investigations to identify potential suspects when direct leads were scarce. However, the Supreme Court recognized that this mechanism could inadvertently collect information from numerous individuals unrelated to any crime, necessitating prior judicial oversight. Justice Kagan emphasized that requiring a warrant subjects the government's evaluation of a record's propriety to "the deliberate and impartial judgment of a judicial officer."