When the U.S. Supreme Court agreed to hear oral arguments on a Fourth Amendment case decided by the Kentucky Supreme Court (Kentucky v. King), alarm bells went off. Under the Fourth Amendment, as readers are no doubt aware, “the right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no Warrants shall issue, but upon probable cause, supported by Oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized.” But what if police pick the wrong house,...