Amendment 4 · Ratified December 15, 1791
Explore the fundamental protections against unreasonable searches and seizures guaranteed by the Fourth Amendment of the U.S. Constitution.
Source: U.S. Const. amend. 4
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.
The Fourth Amendment protects individuals from unwarranted government intrusion into their privacy. It requires law enforcement to obtain a warrant based on probable cause before conducting searches or seizures.
The Fourth Amendment was influenced by colonial experiences with British general warrants and the quartering of soldiers. It reflects a reaction against arbitrary government power and seeks to protect individual liberty and privacy.
Determines if a person's expectation of privacy is reasonable under the circumstances.
Establishes the necessity for a warrant based on probable cause before searches can occur.
Holding: The Supreme Court held that evidence obtained in violation of the Fourth Amendment cannot be used in state courts.
Significance: This case established the exclusionary rule, which prohibits the use of illegally obtained evidence, thereby reinforcing Fourth Amendment protections.
Holding: The Court ruled that a warrant is required for wiretapping as it violates a reasonable expectation of privacy.
Significance: This case expanded privacy rights under the Fourth Amendment and introduced the reasonable expectation of privacy standard.