POLS 341: Fourth Amendment and Plain View Doctrine — Comprehensive Notes

POLS 341: Fourth Amendment and Plain View Doctrine — Comprehensive Study Notes

• Text of the Fourth Amendment (verbatim):
  • "The Right of the People to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no Warrants shall issue, but upon probable cause supported by Oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized."
  • Key terms emphasized in class: security of the person, houses, papers, effects; unreasonable searches and seizures; warrants; probable cause; oath or affirmation; particular description of place and persons/things.

Warrants

• Process overview:
  • Law enforcement submits an affidavit to a judge or magistrate.
  • If judge finds probable cause (likelihood of illegal activity connected to place/thing to be searched/seized), a warrant is issued.
  • Upon service, an inventory of seized items is created.
• Example reference: Idaho murder case warrant, affidavit, and inventory pdf link provided: https://www.pacourts.us/Storage/media/pdfs/20230302/150347-dec.29,2022-searchwarrant(b.kohberger),inventory,exhibits.pdf

The Reasonable Expectation of Privacy (REOP) Test

• Core idea: many searches occur without a warrant due to warrant exceptions.
• Supreme Court carve-outs include:
  • Emergency aid searches (e.g., responding to a scream for help)
  • Hot pursuit (chasing suspect from crime scene to a home)
  • Imminent destruction of evidence
• Focus in this course: the plain view doctrine as a warrantless search exception.
• REOP question context: would society recognize a reasonable expectation of privacy in the given setting? (home, public place, workplace, car, etc.)
• Open question: what about drone over a backyard? (illustrates evolving technology and privacy concerns)

Plain View Doctrine — General Principles

• Plain View allows seizure without consent or a warrant if:
  • The observer is lawfully in the location from which the observation is made;
  • The item’s incriminating nature is immediately apparent; and
  • The item is readily identifiable as contraband or relates to criminal activity.
• Primary caveat: the observation must be from a lawful vantage point; otherwise, plain view does not apply.
• Practical implication: officers must have probable cause that the observed item is contraband; the incriminating nature must be obvious without further manipulation.
• Classic cases and concepts discussed throughout the notes:
  • Coolidge v. New Hampshire (1971): plain view requires lawful viewpoint and no need for a warrant if observation is lawful and item is incriminating
  • Balancing test: plain view is presumptively reasonable if probable cause links item to criminal activity (Payton v. New York style reasoning referenced by Justice Stevens)

Key Cases and Concepts in Plain View

• Horton v. California (1990):.
  • Scenario: warrant to look for coins; a fully automatic weapon found in plain view in a location where it could be seen because it was in a place where coins could be.
  • Holding: still plain view; but limits exist: the search must be in an area where items delineated in the warrant could actually be found.
• Fly-Over Scenarios (air-based observations):
  • California v. Ciraolo (1986): 1000 feet; weed visible through backyard fences; binoculars used; allowed.
  • Dow Chemical v. United States (1985): EPA flyover reveals violations; photographed at low altitude; allowed.
  • Modern iteration: drones as the next frontier for aerial observation.
• Genealogy Websites, DNA, and Plain View:
  • Genetic databases (e.g., Ancestry.com, 23andMe) have aided investigations in cold cases.
  • Police may compare voluntary DNA submissions to suspects and observe discarded items (e.g., coffee cups, cigarette butts) to connect to a DNA profile.
  • A Washington Post article is cited for real-world example of a 43-year-old murder arrest linked to genealogy DNA data.
• Abandoned property and open fields concepts (examples and implications):
  • Garbage left out on the curb is in plain view (California v. Greenwood, 1988).
  • Open fields (Oliver v. United States, 1984) fall outside protected areas; abandoned property (Abel v. United States, 1960) can be seized without probable cause.
  • Note: once property is abandoned, police may not need probable cause to seize, but there are caveats about what constitutes abandonment (e.g., a passenger leaving a package in a taxi).

Abandoned Property, Open Fields, and Related Doctrines

• All lost items are not abandoned:
  • Item left in a taxi is not immediately abandoned; an occupied taxi is not an open field (Rios v. United States, 1960).
• Process for garbage collection used for DNA purposes:
  • Officers typically need a photo of the discarded item; use tweezers to extract with gloves; bag; transport to station; chain of custody maintained to preserve evidence integrity.
• Example procedures and visual scenes cited (NCIS-Los Angeles scene referenced): https://www.dailymotion.com/video/x8noygi

Limits on Plain View: Warrants and Thermal Imagers

• Kyllo v. United States (2001): limits on plain view when unusual technology enhances observation (thermal imaging).
  • Facts: agents used infrared sensor from across the street to detect heat signatures (grow lamps).
  • Ruling: intrusive; potential intrusions include intimate details of the home; warrants are required when unusual tech is used to enhance perception.
  • Three-part conclusion: (1) technology reveals intimate details, (2) blinds do not protect against monitoring, (3) government has alternative investigations, so warrant is required and the observation may be excluded as fruit of the poisonous tree.
• General note: plain view does not extend to use of unusual technology to enhance senses; warrant required in such cases.

Other Senses and Plain View Limitations

• Plain view doctrine can apply to senses beyond sight (smell, sound, etc.).
• Plain feel exception exists but is limited: Minnesota v. Dickerson (1987/1993): pat-downs with a feel must be able to identify the contraband by touch to justify seizure; if not, evidence may be suppressed.
• Smell of marijuana: police still need a warrant in many scenarios, unless plain view/other exceptions apply.

Minnesota v. Dickerson (1987)

• Facts: pat-down based on reasonable suspicion; an item felt through outer clothing was claimed to be cocaine.
• Ruling: plain feel does not apply because the officer could not know by touch what the item was; evidence suppressed.

Bond v. United States (2000): Exploratory Touch and Plain View

• Scenario: immigration checkpoint stop within 25 miles of the border; officer touches bags and detects a 'brick-like' item; bag opened reveals meth.
• Ruling: evidence suppressed; no reasonable basis that the officer knew its contents by touch alone; the bag was opaque and involved squeezing.
• Dissent (Breyer) suggested possible use of hard-cased containers as a counterexample where touching could reveal contents.

The Single-Purpose Container Exception (Plain View Derivative)

• Concept: some containers are so distinctive that their contents are a foregone conclusion, allowing warrantless search if the container itself reveals its contents.
• Not explicitly stated by the Supreme Court; recognized by multiple circuits.
• Typical examples:
  • Gun cases, lock-picking sets, wrapped bundles of cocaine, etc.
• Key question: who determines the contents? Objective viewpoint of a reasonable person vs. subjective viewpoint of the officer.
• Contemporary debates and circuit split: Ninth and Tenth Circuits favor objective reasonable-person viewpoint; Fourth and Seventh Circuits favor officer’s subjective perspective.

Illustrative Scenarios and Contours

• Example: Felon carrying a gun case; the case contents are presumed to be a gun.
• Containers: labeled containers may be treated as single-purpose if their labeling reveals contents; e.g., a labeled package that clearly indicates its contents may be searched without a warrant if consistent with the single-purpose container doctrine.
• Important limitation: still bound by plain view requirements; must be immediately apparent that the contents are incriminating.
• Practical implication: not all containers qualify; the container’s design and labeling matter, and mislabeling can affect admissibility.

Key Article on Single-Purpose Container Exception

• Allison M. Lucier, "You Can Judge a Container by Its Cover: The Single-purpose Container Exception and the Fourth Amendment" (article excerpt included in notes).
• Core takeaway: the exception is a derivative of plain view; containers that reveal their contents to the world do not secure privacy protections; courts have used this to permit warrantless searches of gun cases, lock-picking sets, and wrapped bundles of cocaine.
• Circuit split details (summarized):
  • Ninth and Tenth Circuits: determine whether something is a single-purpose container from an objective standpoint (reasonable person’s view).
  • Fourth and Seventh Circuits: determine from the officer’s subjective viewpoint; factor in search context.
• Balancing privacy rights versus law-enforcement needs remains central.

Texas v. Brown (1983) – Plain View and Enhanced Senses

• Facts: roadside stop; officer sees an opaque green balloon knotted near the driver’s hand; trainer knowledge suggests balloons contain drugs; officer reaches into car, finds heroin.
• Ruling: plain view seizure valid; no Fourth Amendment violation; drugs visible via plain view when the object (balloon) is distinctive and its contents are inferable.
• Notable point: the officer used a flashlight to enhance visibility; no violation noted in this context.

Shared Living Spaces and Plain View

• United States v. Matlock (1974): roommates can permit entry for police into shared living spaces; once inside, items in common areas may be seized if in plain view.
• Lesson: to protect private space, ensure doors to personal rooms are closed/locked.

Riley v. California (2014) and Related Smartphone Data Privacy

• Core holding: police need a warrant to search contents of a cell phone seized from an arrestee.
• Context: prior cases allowed limited searches, but Riley established a strong privacy expectation for digital data on phones.
• Related companion case: U.S. v. Wurie (2014) – observed a call from a home via a phone during questioning and used that to obtain a warrant; reliance on such method raised concerns about intrusiveness of data on phones.
• Summary: distinct from typical plain view, phones require warrants to inspect data content; exceptions exist for public safety and imminent destruction, but overall strong privacy protections apply to digital data.

Carpenter v. United States (2018) – GPS Data and CSLI

• Holding: a warrant is required to obtain historical cell-site-location information (CSLI) associated with a cell phone; ordinary data collection by third-party providers is not automatically in plain view.
• Third-party doctrine does not apply to CSLI; privacy expectations are high for location data history.
• Practical takeaway: CSLI is not plain view; warrants are required for historical location data; the Court emphasizes a high expectation of privacy in smartphone data movements.
• Notable note: 3rd party data does not automatically negate privacy rights in this context.
• Reference: Supreme Court opinion in 16-402 (Carpenter) is available at the Supreme Court website.

Plain View and Third-Party Data (Clarifications)

• One exception conceptually: what numbers ping off a tower; in certain circumstances, such information can be treated as plain view because it reflects publicly observable data from a tower perspective.
• The idea is that aggregated data from a legitimate third party (cell company) can resemble plain view given its limited, high-level nature, but the Court’s stance on CSLI clarifies the need for warrants for detailed location history.

Summary of Plain View Doctrine

• No warrant needed if:
  • Officer is lawfully present where observation occurs;
  • Item’s incriminating nature is immediately apparent;
  • The item is readily identifiable as contraband; and
  • Observation does not involve an intrusive or unusual technology that triggers warrant requirements (Kyllo, privacy considerations).
• Notable exceptions and limits include:
  • Unusual technology (thermal imaging) requiring a warrant (Kyllo)
  • Exploratory or overly intrusive searches (Arizona v. Hicks; Sanders/Robbins debates on the single-purpose container approach)
  • Shared living spaces (Matlock) and joint privacy expectations of roommates
  • Digital data privacy (Riley, Carpenter) and high privacy expectations for phone data
• Abandoned property and open fields remain outside Fourth Amendment protections in many contexts, with important caveats about what constitutes abandonment and the scope of seizure.
• Practical application: plain view is a powerful but constrained tool; officers must be in permitted locations, observe without unusual aids, and can seize items that are immediately identifiable as contraband.

Jurisprudence: Notable Takeaways

• U.S. v. Arredondo (8th Cir. 2021): plain view may be limited when officers observe anonymous or non-incriminating items in upstairs areas; the court rejected plain view in that specific vials case due to lack of immediate incriminating character.
• Riley and Carpenter reflect the broader trend toward protecting digital privacy and explicit warrants for sensitive data.
• The single-purpose container doctrine remains contested across circuits; its applicability depends on whether the container’s contents are immediately apparent and the observer’s perspective.
• The plain view doctrine remains a key exception to the warrant requirement but is not an invitation for general, broad searches; bounded by lawful presence, immediate illegality, and the lack of need for further manipulation.

Connections to Foundational Principles and Real-World Relevance

• Balances privacy against law enforcement needs in the context of orderly searches and seizures.
• Technological evolution (drones, geneaology DNA, digital devices) continually tests boundaries of REOP, plain view, and warrant requirements.
• Practical implications for individuals: manage privacy in shared living spaces, understand the limits of what can be observed from public vantage points, and know when a warrant is required to inspect sensitive data (phones, CSLI).
• Ethical considerations: the tension between solving crimes quickly and preserving reasonable privacy expectations; the role of technology in expanding or narrowing these boundaries.

Quick Reference: Core Definitions and Equations (LaTeX)

• Plain View Conditions (conceptual):
  • Let I be an observed item. Plain view is admissible if:
    ext{lawful ext{ }location} \ rom an officer who has a \text{lawful right to be there}} \, \, ext{and} \
    ext{immediate ext{ }apparentness}(I) = \text{true} \ \, \
    ext{and} \
    ext{probable ext{ }cause}(I\text{ is contraband}) = \text{true}.
  • If any of these fail, plain view does not apply.
• Single-Purpose Container Exception (conceptual):
  • A container C is single-purpose if its outward appearance reasonably implies its contents; the search may occur without a warrant if the contents are immediately apparent from appearance, subject to plain view constraints.
  • The core question: is the determination objective (reasonable person) or subjective (officer’s view)?

Note on Citations and Case References (Selected)

• Coolidge v. New Hampshire (1971)
• Horton v. California (1990)
• California v. Ciraolo (1986)
• Dow Chemical v. United States (1985)
• United States v. Meada (case discussed in container context)
• United States v. Villarreal (case on single-purpose container limitations)
• Texas v. Brown (1983)
• Arizona v. Hicks (1987)
• Sanders footnote on single-purpose containers (contextual discussion)
• Robbins v. California (context for Sanders footnote interpretation)
• Matlock (1974) – shared living spaces
• Riley v. California (2014)
• U.S. v. Wurie (2014) – companion to Riley
• Carpenter v. United States (2018)
• United States v. Arredondo (8th Cir. 2021)

Closing Reminders for Exam Preparation

• Understand the sequence: lawful presence → observation → interpretation of immediacy of illegality → potential seizure without warrant.
• Be able to distinguish plain view from other warrant exceptions and from general searches.
• Be able to discuss how new technologies (drones, infrared imaging) affect plain view analysis and when warrants become necessary.
• Be prepared to explain how the single-purpose container exception creates a circuit split and what factors influence the objective vs. subjective determinations.
• Know the major digital privacy precedents (Riley, Carpenter) and how they interact with traditional plain view principles.