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  2. Fourth Amendment to the United States Constitution - Wikipedia

    en.wikipedia.org/wiki/Fourth_Amendment_to_the...

    The Fourth Amendment has been held to mean that a search or an arrest generally requires a judicially sanctioned warrant, because the basic rule under the Fourth Amendment is that arrests and "searches conducted outside the judicial process, without prior approval by judge or magistrate, are per se unreasonable under the Fourth Amendment ...

  3. Steagald v. United States - Wikipedia

    en.wikipedia.org/wiki/Steagald_v._United_States

    Steagald v. United States, 451 U.S. 204 (1981), is a United States Supreme Court case which held that, based on the Fourth Amendment, a police officer may not conduct a warrantless search of a third party's home in an attempt to apprehend the subject of an arrest warrant, absent consent or exigent circumstances.

  4. Knock-and-announce - Wikipedia

    en.wikipedia.org/wiki/Knock-and-announce

    Deputy U.S. Marshals during a knock-and-announce procedure. Knock-and-announce, in United States law criminal procedure, is an ancient common law principle, incorporated into the Fourth Amendment, [1] which requires law enforcement officers to announce their presence and provide residents with an opportunity to open the door prior to a search.

  5. Police Cannot Seize Property Indefinitely After an Arrest ...

    www.aol.com/news/police-cannot-seize-property...

    The Fourth Amendment's protection against unreasonable searches and seizures extends to the length of a seizure, a federal court ruled last week, significantly restricting how long law enforcement ...

  6. County of Riverside v. McLaughlin - Wikipedia

    en.wikipedia.org/wiki/County_of_Riverside_v...

    McLaughlin (1991) case was a court case dealing with the interpretation of the Fourth Amendment of the United States Constitution in a probable cause case involving a warrantless arrest. In this instance, the Fourth Amendment is used by the plaintiff(s) to argue that the clause "warrants must be legally justified with probable cause" also ...

  7. Arizona v. Gant - Wikipedia

    en.wikipedia.org/wiki/Arizona_v._Gant

    Arizona v. Gant, 556 U.S. 332 (2009), was a United States Supreme Court decision holding that the Fourth Amendment to the United States Constitution requires law-enforcement officers to demonstrate an actual and continuing threat to their safety posed by an arrestee, or a need to preserve evidence related to the crime of arrest from tampering by the arrestee, in order to justify a warrantless ...

  8. Riley v. California - Wikipedia

    en.wikipedia.org/wiki/Riley_v._California

    Riley v. California, 573 U.S. 373 (2014), [1] is a landmark United States Supreme Court case in which the court ruled that the warrantless search and seizure of the digital contents of a cell phone during an arrest is unconstitutional under the Fourth Amendment.

  9. Payton v. New York - Wikipedia

    en.wikipedia.org/wiki/Payton_v._New_York

    Payton v. New York, 445 U.S. 573 (1980), was a United States Supreme Court case concerning warrantless entry into a private home in order to make a felony arrest.The Court struck down a New York statute providing for such warrantless entries because the Fourth Amendment draws a firm line at the entrance to the house.