The fourth amendment to the Constitution of the United States protects two fundamental rights: the right to privacy and the right not to suffer arbitrary invasion. The investigation is the procedure in which a government official or agent violates a reasonable expectation of privacy.
In the Mapp v. Case Ohio Supreme Court of the United States decided that evidence obtained in violation of the Fourth Amendment, which protects against "unreasonable searches and seizures," can not be used in state law, criminal trials in state courts, as well as in federal criminal proceedings in federal courts.
