2.2 Fourth Amendment: Search & Seizure Principles

2.2 Fourth Amendment: Search & Seizure Principles

The Fourth Amendment to the United States Constitution establishes the legal standard for all police interactions involving intrusions into personal privacy or restrictions on physical liberty. It guarantees: "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..." Understanding what constitutes a search or a seizure, evaluating the evidentiary standards of reasonable suspicion versus probable cause, and adhering to Connecticut-specific search and seizure jurisprudence are essential competencies for every police recruit.

Defining Searches & Reasonable Expectation of Privacy

Under early constitutional law, a "search" occurred only when law enforcement physically trespassed onto a constitutionally protected area (person, house, paper, or effect). In the landmark decision Katz v. United States (1967), the Supreme Court revolutionized Fourth Amendment jurisprudence by holding that "the Fourth Amendment protects people, not places."

Justice John Marshall Harlan's concurring opinion in Katz established the enduring Two-Prong Test to determine whether a search has occurred:

1. Subjective Expectation: The individual must have exhibited an actual, subjective expectation of privacy in the area or item inspected.
2. Objective Reasonableness: The expectation of privacy must be one that society is prepared to recognize as objectively reasonable.

If both prongs are satisfied, police intrusion into that private sphere constitutes a Fourth Amendment search, requiring a warrant or a recognized warrant exception. Conversely, areas exposed to public view—such as items visible in open fields, abandoned property, or statements made to third parties—do not carry a reasonable expectation of privacy.

In recent years, the Supreme Court reaffirmed the traditional Physical Trespass Doctrine alongside Katz. In United States v. Jones (2012) (attaching a GPS tracker to a vehicle) and Florida v. Jardines (2013) (bringing a drug-sniffing dog onto a home's front porch), the Court ruled that physically intruding upon a constitutionally protected area or its curtilage to gather evidence remains an independent search under the Fourth Amendment.

Quantum of Proof: Reasonable Suspicion vs. Probable Cause

Law enforcement encounters are governed by ascending tiers of proof. Officers must understand the precise legal standard required for each level of police-citizen interaction.

Reasonable Suspicion is an objective evidentiary standard defined as specific, articulable facts which, taken together with rational inferences from those facts, lead a reasonable officer to suspect that criminal activity is afoot. Established in Terry v. Ohio (1968), reasonable suspicion allows an officer to conduct a brief investigative detention (a Terry Stop). During a Terry stop, if the officer possesses additional specific and articulable facts leading to a reasonable suspicion that the suspect is armed and dangerous, the officer may perform a Terry Frisk (pat-down). A frisk is strictly limited to a search of the outer clothing solely for weapons to ensure officer safety; it is not a general search for evidence or drugs.

Probable Cause is a significantly higher standard of proof. It exists when the facts and circumstances within an officer's knowledge, and of which they have reasonably trustworthy information, are sufficient in themselves to warrant a person of reasonable caution to believe that a crime has been committed by the person to be arrested, or that evidence of a crime is located in the specific place to be searched. Probable cause is required to obtain search warrants, obtain arrest warrants, perform warrantless arrests, and conduct warrantless searches under established exceptions.

Seizure Standards: Federal vs. Connecticut (State v. Oquendo)

A seizure of a person occurs when law enforcement restricts an individual's freedom of movement. However, federal law and Connecticut state law differ fundamentally on when a seizure legally takes place.

Under the federal standard set in California v. Hodari D. (1991), a Fourth Amendment seizure requires either the application of physical force by an officer OR submission by the suspect to an officer's show of authority. If an officer orders a suspect to stop, and the suspect flees, no federal seizure occurs until the suspect is physically tackled or stops.

Connecticut explicitly rejected the Hodari D. standard. In the seminal case State v. Oquendo (1992), the Connecticut Supreme Court ruled that Article First, Sections 7 and 9 of the Connecticut Constitution afford greater protection than the federal Constitution. Under the Oquendo Standard, a person is seized at the exact moment when, in view of all the surrounding circumstances, a reasonable person would believe that they are not free to leave or terminate the encounter—regardless of whether physical force was used or whether the suspect submitted to authority.

For Connecticut officers, activating emergency lights, positioning a cruiser to block a vehicle, or issuing a command such as "Stop, come over here" constitutes a legal seizure immediately. The officer must possess valid reasonable suspicion before making that show of authority.

The Exclusionary Rule & Fruit of the Poisonous Tree

To enforce Fourth Amendment mandates, federal and state courts utilize the Exclusionary Rule. First applied to federal prosecutions in Weeks v. United States (1914) and incorporated to state courts in Mapp v. Ohio (1961), the Exclusionary Rule dictates that evidence obtained in violation of an individual's constitutional rights is inadmissible in court to prove guilt.

The Fruit of the Poisonous Tree Doctrine (Wong Sun v. United States, 1963) extends the Exclusionary Rule to secondary or derivative evidence. If an initial police action is illegal (the "poisonous tree"), any evidence subsequently discovered as a result of that illegality (the "fruit") is barred.

Derivative evidence may only be admitted if the prosecution proves one of three narrow exceptions:

1. Independent Source Exception: The evidence was obtained independently from an untainted, lawful search.
2. Inevitable Discovery Exception: The evidence would have inevitably been discovered through normal, lawful police procedures without the constitutional violation.
3. Attenuation of Taint: The connection between the unconstitutional police conduct and the evidence is so remote or interrupted by an intervening independent act that the "taint" is purged.

Critical Connecticut Rule: While federal courts recognize a "Good Faith Exception" (United States v. Leon) allowing evidence seized under a defective warrant if officers acted in good faith, the Connecticut Supreme Court in State v. Marsala (1990) firmly rejected the Good Faith Exception under the Connecticut Constitution. In Connecticut, if a search warrant lacks probable cause, evidence is excluded regardless of officer good faith.