supreme court

The Geofence Ruling Just Broke Law Enforcement's Favorite Dragnet The Supreme Court just yanked the legal rug out from under one of law enforcement's most efficient—and most constitutionally fraught—investigative tools. The ruling on geofence warrants doesn't just protect privacy in the abstract. It exposes a sprawling surveillance apparatus that cops and feds built on shaky constitutional ground, and the fallout for thousands of existing cases could be messier than anyone's anticipating. Here's what happened: For years, police could get a warrant that would pull location data on every phone in a given area during a specific time window—say, all devices…