4th Amendment Workflow

Seizures

Types of Police Contacts

  • Consensual encounter
    • No justification required.
    • “Those police-individual interactions which result in no restraining of an individual’s liberty whatsoever — i.e., no ‘seizure,’ however minimal — and which may properly be initiated by police officers even if they lack any ‘objective justification.’” (Wilson v. Superior Court (1983) 34 Cal.3d 777, 784.)
  • Detentions
    • Reasonable suspicion.
    • “seizures of an individual which are strictly limited in duration, scope and purpose, and which may be undertaken by the police ‘if there is an articulable suspicion that a person has committed or is about to commit a crime.’” Wilson v. Superior Court (1983) 34 Cal.3d 777, 784.
    • A person is detained when, “taking into account all of the circumstances surrounding the encounter, the police conduct would ‘have communicated to a reasonable person that [she] was not at liberty to ignore the police presence and go about [her] business.’” Florida v. Bostick (1991) 501 U.S. 429, 437.
  • Arrest
    • Probable Cause.
    • “there are those seizures of an individual which exceed the permissible limits of a detention, seizures which include formal arrests and restraints on an individual’s liberty which are comparable to an arrest, and which are constitutionally permissible only if the police have probable cause to arrest the individual for a crime.” Wilson v. Superior Court (1983) 34 Cal.3d 777, 784.
    • “To determine whether officers had probable cause for an arrest, we examine the events leading up to the arrest and decide whether these historical facts, viewed from the standpoint of an objectively reasonable officer, amount to probable cause. It depends on the totality of the circumstances. As the name implies, probable cause deals with probabilities. It requires only a probability or substantial chance of criminal activity, not an actual showing of a crime. Probable cause is not a high bar.” (People v. Diaz (2023) 97 Cal.App.5th 1172, 1178District of Columbia v. Wesby (2018) 583 U.S. 48, 56-57.)

Detention: Justification

Detention: When Detained

Detention: Unduly Prolonged

  • Traffic Stop. Because the traffic violation is the purpose of the stop, the stop “may last no longer than is necessary to effectuate th[a]t purpose.” (Rodriguez v. U.S. (2015) 575 U.S. 348, 354.)
    • “The tolerable duration of police inquiries in the traffic-stop context is determined by the seizure’s ‘mission’–to address the traffic violation that warranted the stop, and attend to related safety concerns.” (Rodriguez v. U.S. (2015) 575 U.S. 348, 354.)
  • No Set Time Limit. “There is no set time limit for a permissible investigative stop; the question is whether the police diligently pursued a means of investigation reasonably designed to confirm or dispel their suspicions quickly.” (People v. Russell (2000) 81 Cal.App.4th 96, 102.)
  • “An officer’s inquiries into matters unrelated to the justification for the traffic stop … do not convert the encounter into something other than a lawful seizure, so long as those inquiries do not measurably extend the duration of the stop.” (Arizona v. Johnson (2009) 555 U.S. 323, 333.)
  • When T/S Starts. A traffic stop begins for purposes of the Fourth Amendment when an officer pulls a vehicle over for a traffic infraction. (People v. McDaniel (2021) 12 Cal.5th 97, 129-130.)
  • Case Law

Seizures: DUI Checkpoints

  • In General. Sobriety checkpoints may be operated without violating the Fourth Amendment or Art. I, sec. 13, of the state Constitution. (Ingersoll v. Palmer (1987) 43 Cal.3d 1321, 1325.)
  • Brown Balancing Test. To determine whether a detention or seizure is justified, Court balances the public interest served by the seizure, the degree to which the seizure advances the public interest, and the severity of the interference with individual liberty. (People v. Banks (1993) 6 Cal.4th 926, 936.) Federal constitutional principles require a showing of either the officer’s reasonable suspicion that a crime has occurred or is occurring or, as an alternative, that the seizure is ‘carried out pursuant to a plan embodying explicit, neutral limitations on the conduct of individual officers.’” (People v. Banks (1993) 6 Cal.4th 926, 936 citing Brown v. Texas (1979) 443 U.S. 47, 51.)
    • DUI checkpoint in Ingersoll satisfied Brown Test b/c: (1) deterring drunk driving and identifying and removing drunk drivers from the roadways undeniably serves a highly important governmental interest; and (2) DUI checkpoints advance this interest. (Ingersoll at pp. 1338-1341.)
    • Third Prong of Brown reformulated as: “the intrusiveness on individual liberties engendered by the sobriety checkpoints.”
  • Ingersoll Factors. To determine whether third prong of Brown test is satisfied (whether the intrusiveness on individual liberties engendered be the sobriety checkpoints passes constitutional muster) the Ingersoll Court developed the following 8 factors: (Ingersoll v. Palmer (1987) 43 Cal.3d 1321, 1341-1347.)
    • (1) Decision Making at Supervisory Level. “Whether the decision to establish a sobriety checkpoint, the selection of the site, and the procedure for the operation of the checkpoint are made and established by supervisory law enforcement personnel.”
    • (2) Neutral Formula. “Whether motorists are stopped according to a neutral formula, such as every third, fifth or tenth driver.”
    • (3) Maintenance of Safety Condition. “Whether adequate safety precautions are taken, such as proper lighting, warning signs, and signals, and whether clearly identifiable official vehicles and personnel are used”
    • (4) Reasonable Location of Checkpoint. “Whether the location of the checkpoint was determined by a policymaking official, and was reasonable, i.e., on a road having a high incidence of alcohol-related accidents or arrests”
    • (5) Reasonable Time & Duration of Checkpoint. “Whether the time the checkpoint was conducted and its duration reflect “good judgment” on the part of law enforcement officials.”
      • Most checkpoints approved by courts have been operated in the late evening and early morning hours. (Ingersoll at p. 1435.)
    • (6) Indicia of the Official Nature of the Roadblock. “Whether the checkpoint exhibits sufficient indicia of its official nature (to reassure motorists of the authorized nature of the stop)”
    • (7) Length and Nature of Detention. “Whether the average length and nature of the detention is minimized”
      • Factor satisfied where 28 seconds for average screening, six minutes for those given FSTs. (Ingersoll at p. 1327.)
    • (8) Advance Publicity Regarding Each Checkpoint. “Whether the checkpoint is preceded by publicity.”
      • Publication of an article advising of the checkpoint in the morning edition of the newspaper with the largest countywide circulation prior to the commence of its operation at 6PM the same day, satisfied this factor. (People v. Squire (1993) 15 Cal.App.4th 775, 781.)
  • Absence of Ingersoll factor not dispositive. (Roelfsema v. Department of Motor Vehicles (1995) 41 Cal.App.4th 871, 877.)


Searches

Standing

  • D cannot challenge introduction of evidence obtained in an allegedly unlawful search unless that individual had a reasonable expectation of privacy in the object seized or the place searched. (Rakas v. Illinois (1978) 439 U.S. 128, 143.)
  • Defendant bears the burden of establishing a legitimate expectation of privacy in the area searched or the object seized. (People v. Jenkins (2000) 22 Cal.4th 900, 972.)
  • Reasonable expectation of privacy is defined as (1) a subjective expectation of privacy in the object of the challenged search which h(2) society would define as a reasonable expectation. (California v. Ciraolo (1986) 476 U.S. 207, 211.)
    • Relevant Factors (People v. Hernandez (1988) 199 Cal.App.3d 1182, 1189.)
      • Whether D had a possessory interest in the thing seized or place searched
      • Whether D has a right to exclude others from that place
      • Whether D exhibited a subjective expectation that it would remain free from governmental invasion
      • Whether D took normal precautions to maintain his privacy
      • Whether D was legitimately on the premises
    • The mere fact a person is legitimately present in a vehicle or on premises that are searched, without more, is insufficient to establish a reasonable expectation of privacy (Rakas v. Illinois (1978) 439 U.S. 128, 143.)

Plain View Search

Exigent Circumstances

Search-Incident-to-Arrest (Non-Vehicular)

  • Consent must be freely and voluntarily rendered and not be the product of police coercion. (Schneckloth v. Bustamonte (1973) 412 U.S. 218, 227.)
  • Voluntariness: Totality of the Circumstances.
  • Objective Standard. Ds subjective state of mind or intent is not determinative of the question of consent to search. (People v. Wheeler (1974) 43 Cal.App.3d 898, 903.)
  • Factors which may be relevant to whether D’s consent to search was voluntarily given: (1) whether the consenting person was in custody and whether Miranda warnings were given; (2) whether the officer(s) had weapons drawn; (3) whether the officer(s) informed the person of the right to refuse consent; (4) whether the person was told a search warrant could be obtained; (5) whether consent was obtained while the person was confronted by many officers; (6) whether the consenting person experienced a significant interruption of his liberty; and (7) whether the officer(s) used deceptive practices to obtain consent. (Boitez v. Superior Court (2023) 96 Cal.App.5th 1213.)
  • Coercion. Coercion is not limited to physical abuse; it may involve more subtle forms of psychological persuasion including deception or communication of false information. (People v. Miranda-Guerrero (2022) 14 Cal.5th 1, 20.)
  • Officer’s false promise of leniency as to towing D’s mother’s car is material & inextricable part of agreement inducing D’s consent to search, and thus consent not voluntary. (Boitez v. Superior Court (2023) 96 Cal.App.5th 1213.)

Community Caretaking

  • Insufficient on its own to justify warrantless search.
    • “The community caretaking exception asserted in the absence of exigency is not one of the carefully delineated exceptions to the residential warrant requirement recognized by the US Supreme Court.” (People v. Ovieda (2019) 7 Cal.5th 1034, 1053.)
  • No Good Faith Reliance on People v. Ray (1999) 21 Cal.4th 464, because decision was a plurality opinion. (Texas v. Brown (1983) 460 U.S. 730, 737.)
  • Insufficient on its own to justify warrantless search. Fourth Amendment does not contain an exception to the warrant requirement for searches to locate a driver’s identification following a traffic stop. (People v. Lopez (2019) 8 Cal.5th 353, 549.)

Vehicle Searches

General Principles

  • (1) Probable Cause search (AUTOMOBILE EXCEPTION): officers may search a vehicle w/o warrant if it is readily mobile and probable cause exists to believe it contains contraband or evidence of criminal activity. (People v. Johnson (2018) 21 Cal.App.5th 1026, 1034; People v. Moore (2021) 64 Cal.App.5th 291, 297.)
  • (2) Reasonable Suspicion search (SEARCH-INCIDENT-TO-ARREST): if officers have lawfully arrested occupant of a vehicle, they may search the vehicle for everything pertaining to the crime for which he was arrested if they have RS that such evidence is inside the vehicle. (Arizona v. Gant (2009) 556 U.S. 332, 335.)
  • (3) Inventory search: permitted if (1) reasonably necessary to tow the vehicle under the circumstances and (2) search conducted in accordance with standard procedures

Vehicle Search: Automobile Exception

Vehicle Search: Search-Incident-to-Arrest Exception

  • Reasonable Suspicion Search. If officers have lawfully arrested occupant of a vehicle, they may search the vehicle for everything pertaining to the crime for which he was arrested if they have RS that such evidence is inside the vehicle. (Arizona v. Gant (2009) 556 U.S. 332, 335.)
  • Two-pronged test. (People v. Johnson (2018) 21 Cal.App.5th 1026, 1035.) May search if EITHER:
    • D within reaching distance of passenger compartment at time of search; OR
    • It is reasonable to believe vehicle contains evidence of the offense
  • Entire Passenger Compartment. Gant provides the generalized authority to search the entire passenger compartment of a vehicle and any containers therein incident to arrest. (People v. Nottoli (2011) 199 Cal.App.4th 531, 555.)
  • DUI Arrest. “When a driver is arrested for driving under the influence, or being under the influence, it will generally be reasonable for an officer to believe evidence relating to that crime might be found in the vehicle.” (People v. Quick (2016) 5 Cal.App.5th 1006, 1012-1013.)
  • Inventory search: permitted if (1) reasonably necessary to tow the vehicle under the circumstances and (2) search conducted in accordance with standard procedures
  • Impound vs. Inventory. To determine whether a warrantless search is properly characterized as an inventory search, we focus on the purpose of the impound rather than the purpose of the inventory. (People v. Lee (2019) 40 Cal.App.5th 853, 867.)
  • Whether impoundment is warranted under this community caretaking doctrine depends on the location of the vehicle and officers’ duty to prevent it from creating a hazard to other drivers or being a target for vandalism or theft. (People v. Williams (2006) 145 Cal.App.4th 756, 761.)
  • Standardized Criteria.
    • Police exercise discretion determining whether impounding a vehicle serves their community caretaking function, so long as that discretion is exercised according to standard criteria.
    • Statutes authorizing impounding under various circumstances may constitute a standardized policy guiding officers’ discretion, though statutory authorization does not, in and of itself, determine the constitutional reasonableness of the seizure.  (People v. Torres (2010) 188 Cal.App.4th 775, 787.)
  • Impound After Arrest. Impound authorized “[when] an officer arrests a person driving or in control of a vehicle for an alleged offense and the officer is, by this code or other law, required or permitted to take, and does take, the person into custody.” (Veh. Code, § 22651(h)(1).)
  • Investigatory Pretext for an impound search violates the Fourth Amendment. The relevant question is whether the impounding was subjectively motivated by an improper investigatory purpose.  (People v. Torres (2010) 188 Cal.App.4th 775, 791.)

Vehicle Search: Marijuana

  • Primer
    • Pre-Proposition 64. Police officer’s observation of any amount of marijuana in a vehicle established probable cause to search under the automobile exception.
    • Proposition 64.
      • It is lawful for persons 21 years or older, under defined circumstances, to possess and transport up to 28.5 grams of cannabis. (HS 11362.1(a)(1).)
      • Cannabis and cannabis products involved in any way with conduct deemed lawful by this section are not contraband nor subject to seizure, and no conduct deemed lawful by this section shall constitute the basis for detention, search, or arrest. (HS 11362.1(c).)
    • Post-Prop 64. “[L]awful possession of marijuana in a vehicle does not provide probable cause to search the vehicle.” (People v. Hall (2020) 57 Cal.App.5th 946, 948.)
  • Unlawful Marijuana-Related Conduct Post-Prop 64
  • Key Factors Dispositive on Whether Lawful Search:
  • Closer Look at Key Cases
    • Blakes v. Superior Court (2021) 72 Cal.App.5th 904
      • Facts: Illegally tinted windows, D took 1/10 of a mile to pull over and stop, smell of burnt marijuana emanating from the car, D had a suspended license, D had prior arrest for felon in possession of a firearm
      • Held: No PC to search
      • Rationale: There are only two possible illegal uses of marijuana that could have supported PC to believe a crime involving marijuana was being committed: (1) driving under the influence of marijuana or (2) driving with an open container of marijuana
        • Fact that there was a smell of burnt marijuana emanating from the car was insufficient to support either theory of PC, because neither detective could determine if the marijuana was freshly burnt, removing any support for an inference that D was smoking marijuana while driving
    • People v. Johnson (2020) 50 Cal.App.5th 620
      • Facts: D parked on side of road, officer smelled odor of marijuana emanating from car and saw plastic baggie knotted at the top containing two grams of marijuana in plain view
      • Held: odor of marijuana alone no longer provides an inference that a car contains contraband
      • Held: a knotted plastic baggie is not an “open container” for HS 11362.3(a)(4)
      • Rationale: Open container refers to the absence of al id or some other type of cover or material separating the content from the outside such that there is no barrier to accessing the content. A baggie knotted at the top presents a barrier to accessing its contents

House Searches

Chemical Tests

Breath Test

Blood Test

  • Unconscious Driver.
    • When driver is unconscious and cannot be given breath test, the exigent circumstances doctrine generally permits a blood test without a warrant. (Mitchell v. Wisconsin (2019) 139 S. Ct. 2525.)
      • “When police have probable cause to believe a person has committed a drunk-driving offense and the driver’s unconsciousness or stupor requires him to be taken to the hospital or similar facility before police have a reasonable opportunity to administer a standard evidentiary breath test, they may almost always order a warrantless blood test to measure the driver’s BAC without offending the Fourth Amendment.” (Mitchell v. Wisconsin (2019) 139 S. Ct. 2525, 2539 (plur. opn. of Alito, J.).)
    • Unconscious driver, police did not have a reasonable opportunity to use a breathalyzer before D was hospitalized for his injuries, held, OK. (People v. Nault (2021) 72 Cal.App.5th 1144.)
    • But: unconscious driver at hospital 90 minutes after incident, held, no exigent circumstance permitted warrantless blood draw. (People v. Alvarez (2023) 98 Cal.App.5th 531.)
  • Exigent Circumstances
    • Forced blood draw of DUI arrestee justified where (1) ofc delayed on scene b/c D caused accident with injuries requiring attention; (2) D combative requiring physical restraints, delaying DUI investigation; (3) D refused to tells officers when he stopped drinking; (4) officers forced to “hogtie” D at CHP office b/c so out of control. (People v. Toure (2015) 232 Cal.App.4th 1096.)
  • Botched Admonition.
    • Admonition though not entirely accurate, was not patently false and did sufficiently inform D. Failure to strictly follow implied consent law did not violate D’s rights. (People v. Harris (2015) 234 Cal.App.4th 671.)
  • Consequences of Refusal
  • Probation Condition
  • Forced Blood Draw + Warrant
  • Fourth Amendment does not apply to private searches. (People v. Wilson (2020) 56 Cal.App.5th 128, 141.)
  • If a government search is preceded by a private search, the government search does not implicate the Fourth Amendment as long as it does not exceed the scope of the initial private search. (United States v. Jacobsen (1984) 466 U.S. 109, 115-117.)
  • Child Porn. Google scanning user content, assigning hash values to that content, flagging offending images with hash values that match previously reviewed child pornography images, and sending the apparent child pornography to NCMEC–constitute private action that was not performed at the direction of the government (and thus 4th Amendment protection is wholly inapplicable). (People v. Wilson (2020) 56 Cal.App.5th 128, 144.)


Exclusionary Rule

General Principles

Exceptions

Good Faith Reliance Doctrine

  • General Rule. When police officers are complying in good faith with the law as it existed at the time, there is no reason to apply the exclusionary rule. (People v. Youn (2014) 229 Cal.App.4th 571, 579.)
  • When a search is found to be invalid “a Fourth Amendment violation is shown and the question … becomes whether such constitutional violation is appropriately remedied by the application of the judicially created exclusionary rule which prohibits the admission at trial of the evidence obtained during the unlawful search.” (People v. Downing (1995) 33 Cal.App.4th 1641, 1650-1651.)
  • Exclusion of the evidence is compelled “only where it “result[s] in appreciable deterrence.” (Herring v. United States (2009) 555 U.S. 135, 141.)
  • Deliberate vs. Negligent Misconduct. “To trigger the exclusionary rule, police conduct must be sufficiently deliberate that exclusion can meaningfully deter it, and sufficiently culpable that such deterrence is worth the price paid by the justice system … [T]he exclusionary rules serves to deter deliberate, reckless, or grossly negligent conduct, or in some circumstances recurring or systematic negligence.” (Herring v. United States (2009) 555 U.S. 135, 141.)
    • “[W]hen police mistakes are the result of negligence … rather than systemic errors or reckless disregard of constitutional requirements, any marginal deterrence does not ‘pay its way.’ In such a case, the criminal should not ‘go free because the constable has blundered.’” (Herring v. United States (2009) 555 U.S. 135, 147-148.)
  • Ofc reliance on court-maintained data that D on probation. Held, good faith exception applied, even assuming D’s probation had been terminated due to AB1950. (People v. Pritchett (2024) 102 Cal.App.5th 355.)

Independent Source Doctrine

Inevitable Discovery Doctrine

  • General Rule: permits admission of evidence that would have been discovered even without the unconstitutional source. (Nix v. Williams (1984) 467 U.S. 431, 443-444.)
    • The inevitable discovery doctrine acts as an exception to the exclusionary rule and permits the admission of otherwise excluded evidence if the prosecution can establish by a preponderance of the evidence that the information would have been inevitably discovered by lawful means, such as routine police procedures. (People v. Banks (2023) 97 Cal.App.5th 376, 383.)
    • Officer suspected stolen vehicle, D w/o valid license, police agency had standardized policy re: inventory searches. Held, evidence found inside vehicle would have been inevitably discovered pursuant to lawful inventory search. (People v. Banks (2023) 97 Cal.App.5th 376, 383.)

Attenuation Doctrine

  • General Rule: “Evidence is admissible when the connection between unconstitutional police conduct and the evidence is remote or has been interrupted by some intervening circumstances, so that the interest protected by the constitutional guarantee that has been violated would not be served by suppression of the evidence obtained.” (Utah v. Strieff (2016) 136 S. Ct. 2056, 2061.)
    • Three factors to assess attenuation (Brown v. Illinois (1975) 422 U.S. 590.):
      • Temporal proximity between the unconstitutional conduct and the discovery of evidence to determine how closely the discovery of evidence followed the unconstitutional search
      • Presence of intervening circumstances
      • Purpose and flagrancy of misconduct


Warrants & Wiretaps

Search Warrants

Arrest Warrants

Wiretaps

  • In General. Generally, wiretapping is prohibited. (People v. Sedillo (2015) 235 Cal.App.4th 1037, 1053.)
  • PC 629.52. Application for wiretap can be made if PC to believe suspect committed/about to commit one of these offenses:
    • Drug Sales (HS 11351, 11351.5, 11352, 11378, 11378.5, 11379, 11379.5, 11379.6) where substance exceeds 10 gallons by liquid volume or 3 lb. of solid substance by weight
    • Murder, solicitation to commit murder, PC 209, or commission of felony involving a destructive device (PC 18710, 18715, 18720, 18725, 18730, 18740, 18745, 18750, 18755)
    • Felony PC 186.22
    • Felony PC 11418, 11418.5, 11419
    • PC 236.1
    • Attempt or conspiracy to commit any of the above
  • Requirements. Wiretap authorized if:
    • (1) PC to believe individual has committed enumerated offense in PC 629.52
    • (2) the communications concerning illegal activities will be obtained through the wiretap
    • (3) the communications device will be used by the person whose communications are to be intercepted
    • (4) wiretap is necessary – “[n]ormal investigative procedures have been tried and have failed or reasonably appear either unlikely to succeed if tried or too dangerous.” (629.52(d).)
  • Necessity. The existence of a conspiracy “is an important factor in analyzing the necessity for a wiretap.” (People v. Leon (2007) 40 Cal.4th 376, 391-392.)
  • Suppression. Defendants may move to suppress the contents of communications intercepted by wiretap only on the basis that the contents were obtained in violation of the statute or the Fourth Amendment. (PC 629.72.)