Mapp v. Ohio, 367 U.S. 643 (1961), was a landmark case in criminal procedure, in which theUnited States Supreme Court decided that evidence obtained in violation of the Fourth Amendment, which protects against "unreasonable searches and seizures

Katz v. United States, 389 U.S. 347 (1967), is a United States Supreme Court case discussing the nature of the "right to privacy" and the legal definition of a "search". The Court’s ruling refined previous interpretations of the unreasonable search and se

United States v. U.S. District Court, 407 U.S. 297 (1972), also known as the Keith case, was a landmark United States Supreme Court decision that upheld, in a unanimous 8-0 ruling, the requirements of the Fourth Amendment in cases of domestic surveillance

Vernonia School District 47J v. Acton, 515 U.S. 646 (1995) was a U.S. Supreme Courtdecision which upheld the constitutionality of random drug testing regimen implemented by the local public schools in Vernonia, Oregon. Under that regimen