The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated. "Under the Fourth and Fourteenth Amendments, an arresting officer may, without a warrant search a person validly arrested.The Fourth Amendment to the United States Constitution prohibits the federal government from conducting unreasonable searches and seizures. The Fourth Amendment to the United States Constitution prohibits the federal government from conducting unreasonable searches and seizures. Amendment Four to the Constitution was ratified on December 15, 1791. It protects the American people from unreasonable searches and seizures. But cracks in the Fourth Amendment have weakened our personal security. An annotation about the Fourth Amendment of the Constitution of the United States.