Discover published sets by community

Physical intrusion into a constitutionally protected area to gather information constitutes a search

Illegally obtained evidence can be used if it would have later been discovered legally

Evidence obtained in violation of the Fourth Amendment is generally inadmissible in court

Searches and seizures typically require a warrant signed by a judge

Routine searches at national borders do not require a warrant or probable cause

No reasonable expectation of privacy for information voluntarily given to third parties

May require a warrant based on probable cause, detailing the conversations to be intercepted

Protection under the Fourth Amendment applies when a person has a legitimate expectation of privacy

Officers may perform a search without a warrant after making a lawful arrest

Evidence collected in reasonable reliance on a search warrant later found invalid may still be used

Allows law enforcement to enter premises without a warrant when chasing a fleeing suspect

Courts may order decryption of devices, but Fifth Amendment issues can arise

Evidence first obtained illegally but later acquired through a legally obtained independent source is admissible

Searches conducted for regulatory purposes, may not always require a warrant

Emergency conditions allow for warrantless searches to prevent immediate harm or destruction of evidence

Allows officers to seize evidence without a warrant if it is clearly visible

Searching without a warrant is permissible if voluntary consent is given

Police must announce their presence and wait before entering, except in special circumstances

A reasonable belief that a person has committed a crime

Protection against unreasonable searches and seizures

Evidence is admissible if the connection between illegal police action and the evidence is distant or has been interrupted by some intervening circumstance

Lowered expectation of privacy allows for searches without warrants or probable cause

Officers can pat down clothing for weapons if they have reasonable suspicion

Lower expectation of privacy in vehicles allows warrantless searches with probable cause