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  2. Katz v. United States - Wikipedia

    en.wikipedia.org/wiki/Katz_v._United_States

    Katz v. United States, 389 U.S. 347 (1967), was a landmark decision of the U.S. Supreme Court in which the Court redefined what constitutes a "search" or "seizure" with regard to the protections of the Fourth Amendment to the U.S. Constitution. [1][2] The ruling expanded the Fourth Amendment's protections from an individual's "persons, houses ...

  3. Terry v. Ohio - Wikipedia

    en.wikipedia.org/wiki/Terry_v._Ohio

    IV, XIV. Terry v. Ohio, 392 U.S. 1 (1968), was a landmark U.S. Supreme Court decision in which the court ruled that it is constitutional for American police to "stop and frisk" a person they reasonably suspect to be armed and involved in a crime. Specifically, the decision held that a police officer does not violate the Fourth Amendment to the ...

  4. Omnibus Crime Control and Safe Streets Act of 1968 - Wikipedia

    en.wikipedia.org/wiki/Omnibus_Crime_Control_and...

    United States, 431 U.S. 563 (1977) The Omnibus Crime Control and Safe Streets Act of 1968 (Pub. L. 90–351, 82 Stat. 197, enacted June 19, 1968, codified at 34 U.S.C. § 10101 et seq.) was legislation passed by the Congress of the United States and signed into law by President Lyndon B. Johnson that established the Law Enforcement Assistance ...

  5. Law enforcement - Wikipedia

    en.wikipedia.org/wiki/Law_enforcement

    Law enforcement. Law enforcement is the activity of some members of the government or other social institutions who act in an organized manner to enforce the law by investigating, deterring, rehabilitating, or punishing people who violate the rules and norms governing that society. [1] The term encompasses police, courts and corrections.

  6. Police power (United States constitutional law) - Wikipedia

    en.wikipedia.org/wiki/Police_power_(United...

    v. t. e. In United States constitutional law, the police power is the capacity of the states and the federal government to regulate behavior and enforce order within their territory for the betterment of the health, safety, morals, and general welfare of their inhabitants. [1] Police power is defined in each jurisdiction by the legislative body ...

  7. Searches incident to a lawful arrest - Wikipedia

    en.wikipedia.org/wiki/Searches_incident_to_a...

    Search incident to a lawful arrest, commonly known as search incident to arrest (SITA) or the Chimel rule (from Chimel v.California), is a U.S. legal principle that allows police to perform a warrantless search of an arrested person, and the area within the arrestee’s immediate control, in the interest of officer safety, the prevention of escape, and the preservation of evidence.

  8. Fourth Amendment to the United States Constitution - Wikipedia

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

    The Bill of Rights in the National Archives. The Fourth Amendment (Amendment IV) to the United States Constitution is part of the Bill of Rights.It prohibits unreasonable searches and seizures and sets requirements for issuing warrants: warrants must be issued by a judge or magistrate, justified by probable cause, supported by oath or affirmation, and must particularly describe the place to be ...

  9. Law enforcement in the United States - Wikipedia

    en.wikipedia.org/wiki/Law_enforcement_in_the...

    As of 2024, more than 1,280,000 sworn law enforcement officers are serving in the United States. About 137,000 of those officers work for federal law enforcement agencies. [1] Law enforcement operates primarily through governmental police agencies. There are 17,985 police agencies in the United States which include local police departments ...