by Elysia Wu*
The Fourth Amendment’s protections against unreasonable searches and seizures were developed when law enforcement investigations relied on publicly exposed information and relatively simple, localized data-collection technologies. The rapid adoption of artificial intelligence (“AI”) in law enforcement, however, places increasing strain on these traditional Fourth Amendment protections. Predictive policing software, facial recognition systems, and other algorithmic tools can generate detailed profiles of individuals without a warrant or individualized suspicion, enabling wide-scale police monitoring in a continuous, data-driven way. Treating AI tools as functionally equivalent to traditional policing techniques risks eroding constitutional safeguards and exacerbating existing racial disparities in the criminal legal system. To avoid these harms and ensure that the adoption of AI by law enforcement does not erode the Fourth Amendment’s core protections, courts must find that AI surveillance requires a warrant due to its scale, continuity, and predictive inferences.