Highlights Fourth Amendment applications in factual situations with helpful cross-references supporting the positioning of facts. The Fourth Amendment, however, is not a guarantee against all searches and seizures, but only those that are deemed unreasonable under the law.Against unreasonable .. . Brett Wayne Parkins was convicted of aiming a laser pointer at an aircraft, in violation of 18 USC § 39A. The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated. In the Fourth Amendment meaning of that. In the Fourth Amendment meaning of that. The Fourth Amendment to the U.S. Constitution protects individuals from unreasonable searches and seizures.