The Fourth Amendment (Amendment IV) to the United States Constitution is the part of the Bill of Rights that prohibits unreasonable searches and seizures and requires any warrant to be judicially sanctioned and supported by probable cause. It was adopted in response to the abuse of the writ of assistance, a type of general search warrant issued by the British government and a major source of tension in pre-Revolutionary America. The Fourth Amendment was introduced in Congress in 1789 by James Madison, along with the other amendments in the Bill of Rights, in response to Anti-Federalist objections to the new Constitution. Congress submitted the amendment to the states on September 28, 1789. By December 15, 1791, the necessary three-quarters of the states had ratified it. On March 1, 1792, Secretary of State Thomas Jefferson announced the adoption of the amendment.
Because the Bill of Rights did not initially apply to the states, and federal criminal investigations were less common in the first century of the nation's history, there is little significant case law for the Fourth Amendment before the 20th century. The amendment was held to apply to the states in Mapp v. Ohio (1961).
Under the Fourth Amendment, search and seizure (including arrest) should be limited in scope according to specific information supplied to the issuing court, usually by a law enforcement officer who has sworn by it. Fourth Amendment case law deals with three central questions: what government activities constitute "search" and "seizure"; what constitutes probable cause for these actions; and how violations of Fourth Amendment rights should be addressed. Early court decisions limited the amendment's scope to a law enforcement officer's physical intrusion onto private property, but with Katz v. United States (1967), the Supreme Court held that its protections, such as the warrant requirement, extend to the privacy of individuals as well as physical locations. Law enforcement officers need a warrant for most search and seizure activities, but the Court has defined a series of exceptions for consent searches, motor vehicle searches, evidence in plain view, exigent circumstances, border searches, and other situations.
The exclusionary rule is one way the amendment is enforced. Established in Weeks v. United States (1914), this rule holds that evidence obtained through a Fourth Amendment violation is generally inadmissible at criminal trials. Evidence discovered as a later result of an illegal search may also be inadmissible as "fruit of the poisonous tree," unless it inevitably would have been discovered by legal means.
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.[1]
Like many other areas of American law, the Fourth Amendment finds its roots in English legal doctrine. Sir Edward Coke, in Semayne's case (1604), famously stated: "The house of every one is to him as his castle and fortress, as well for his defence against injury and violence as for his repose."[2]Semayne's Case acknowledged that the King did not have unbridled authority to intrude on his subjects' dwellings but recognized that government agents were permitted to conduct searches and seizures under certain conditions when their purpose was lawful and a warrant had been obtained.
The 1760s saw a growth in the intensity of litigation against state officers, who, using general warrants, conducted raids in search of materials relating to John Wilkes's publications attacking both government policies and the King himself. The most famous of these cases involved John Entick, whose home was forcibly entered by the King's Messenger Nathan Carrington, along with others, pursuant to a warrant issued by George Montagu-Dunk, 2nd Earl of Halifax authorizing them "to make strict and diligent search for... the author, or one concerned in the writing of several weekly very seditious papers intitled, 'The Monitor or British Freeholder, No 257, 357, 358, 360, 373, 376, 378, and 380,'" and seized printed charts, pamphlets and other materials. Entick filed suit in Entick v Carrington, argued before the Court of King's Bench in 1765. Charles Pratt, 1st Earl Camden ruled that both the search and the seizure was unlawful, as the warrant authorized the seizure of all of Entick's papersnot just the criminal onesand as the warrant lacked probable cause to even justify the search. By holding that "[O]ur law holds the property of every man so sacred, that no man can set his foot upon his neighbour's close without his leave",[4]Entick established the English precedent that the executive is limited in intruding on private property by common law.
Homes in Colonial America, on the other hand, did not enjoy the same sanctity as their British counterparts, because legislation had been explicitly written so as to enable enforcement of British revenue-gathering policies on customs; until 1750, in fact, the only type of warrant defined in the handbooks for justices of the peace was the general warrant. During what scholar William Cuddihy called the "colonial epidemic of general searches", the authorities possessed almost unlimited power to search for anything at any time, with very little oversight.
In 1756, the colony of Massachusetts enacted legislation that barred the use of general warrants. This represented the first law in American history curtailing the use of seizure power. Its creation largely stemmed from the great public outcry over the Excise Act of 1754, which gave tax collectors unlimited powers to interrogate colonists concerning their use of goods subject to customs. The act also permitted the use of a general warrant known as a writ of assistance, allowing tax collectors to search the homes of colonists and seize "prohibited and uncustomed" goods.
A crisis erupted over the writs of assistance on December 27, 1760 when the news of King George II's death on October 23 arrived in Boston. All writs automatically expired six months after the death of the King and would have had to be re-issued by George III, the new king, to remain valid.
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Fourth Amendment to the United States Constitution ...