Randomization and the Fourth Amendment
Bernard E. Harcourt
University of Chicago; Columbia Law School
Tracey L. Meares
Yale University - Law School
August 25, 2010
U of Chicago Law & Economics, Olin Working Paper No. 530
U of Chicago, Public Law Working Paper No. 317
Randomized checkpoint searches are generally taken to be the exact antitheses of reasonableness under the Fourth Amendment. In the eyes of most jurists, checkpoint searches violate the central requirement of valid Fourth Amendment searches – namely, individualized suspicion. We disagree. In this article, we contend that randomized searches should form the very lodestar of a reasonable search. The fact is that the notion of “individualized” suspicion is misleading; most suspicion in the modern policing context is group-based and not individual specific. Randomized searches by definition are accompanied by a certain level of suspicion. The constitutional issue, we maintain, should not turn on the question of suspicion-based versus suspicionless police searches, but on the level of suspicion that attaches to any search program and on the evenhandedness of the program. In essence, we argue for a new paradigm of randomized encounters that satisfy a base level of suspicion and that will provide the benefits of both privacy-protection (by ensuring a minimum level of suspicion) and evenhandedness (by cabining police discretion), the very values we wish to protect through the Fourth Amendment.
Number of Pages in PDF File: 80
Keywords: Fourth Amendment, Individualized Suspicion, Reasonableness, Probable Cause, Articulable Suspicion, Stop-And-Frisk, Checkpoint Searches, Border Patrol Searches, Randomized Searches, Randomization, Drug Testing, School Searches, Roadblocks, Warrantsworking papers series
Date posted: August 25, 2010 ; Last revised: September 17, 2010
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