The fourth amendment is a constitutional amendment that protects individuals in the United States from unreasonable searches and seizures. The amendment states as follows: The right of 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 person or things to be seized.