United States v. Ferguson, 799 F.3d 1243 (9th Cir. 2023)
United States v. Ferguson is a pivotal case in the realm of Fourth Amendment jurisprudence.
Does the use of predictive policing technology, without a warrant or direct evidence, justify a law enforcement search under the Fourth Amendment?
Under the Fourth Amendment, a search conducted by law enforcement generally requires a judicially sanctioned warrant backed by probable cause. Exceptions exist, such as exigent circumstances or consent, but speculative technology-based predictions are not one.
The court held that the search violated Ferguson's Fourth Amendment rights, ruling that predictive policing technology does not establish probable cause to justify warrantless searches.
United States v. Ferguson is a teaching case for law students, illustrating the balance courts must strike between technological advancements in crime prevention and constitutional protections of individual privacy. It is significant for its reaffirmation of the warrant requirement in the context of modern policing tactics based on emerging tech, making it essential for understanding Fourth Amendment jurisprudence.