Law Commons^™

Binary Searches And The Central Meaning Of The Fourth Amendment, Lawrence Rosenthal

Lawrence Rosenthal

Fourth Amendment jurisprudence is frequently accused of doctrinal incoherence. A primary reason is the persistence of two competing conceptions of “unreasonable” search and seizure. The first is libertarian in character; it understands the Fourth Amendment’s command of reasonableness as establishing a constitutional boundary on investigative powers. On this view, the prohibition on unreasonable search and seizure keeps society free by limiting the government’s investigative reach. The second conception understands the Fourth Amendment's prohibition as freedom against unjustified government intrusion. This conception of reasonableness is essentially pragmatic in character, balancing liberty and law-enforcement interests.

This article interrogates these competing conceptions by …

Probability, Probable Cause, And The Law Of Unintended Consequences, Lawrence Rosenthal

Lawrence Rosenthal

This brief essay responds to Max Minzer's article "Putting Probability Back into Probable Cause." The essay supports Professor Minzer's proposal for the use of empirical evidence of the success of a given investigating officer or investigative technique in assessing the existence of probable cause to search or seize, but offers a caveat. If an officer's "hit rate" becomes central to Fourth Amendment analysis, there is a serious danger of overdeterrence which, in turn, could lead to a dangerous escalation in violent crime. The essay offers some proposals for minimizing the risk of overdeterrence in an empirically-based regime of probable cause.