What doctrine governs the admissibility of evidence derived from illegally obtained statements?

What doctrine governs the admissibility of evidence derived from illegally obtained statements?

• A. Exclusionary Rule
• B. Miranda
• C. Fruit of the Poisonous Tree Doctrine
• D. Public Safety

Answer: (C)

The main idea is that evidence obtained through illegal police conduct is not just tainted at the moment of the initial illegality, but any further evidence that flows from that taint is also typically barred. This is the Fruit of the Poisonous Tree Doctrine. It extends the reach of the court’s suppression beyond the unlawfully obtained statement itself to include derivative evidence discovered as a result of that statement, unless a recognized exception applies. The rationale is to deter misconduct and protect constitutional rights; otherwise, improper actions could lead to more incriminating material being admitted. Note how this differs from Miranda, which concerns warnings given to suspects and the admissibility of statements themselves, or from the Public Safety exception, which is a narrow exception to Miranda in emergencies. The Exclusionary Rule covers inadmissibility of illegally obtained evidence, but the question focuses on evidence derived from that taint, which is precisely what the Fruit of the Poisonous Tree Doctrine governs.

The main idea is that evidence obtained through illegal police conduct is not just tainted at the moment of the initial illegality, but any further evidence that flows from that taint is also typically barred. This is the Fruit of the Poisonous Tree Doctrine. It extends the reach of the court’s suppression beyond the unlawfully obtained statement itself to include derivative evidence discovered as a result of that statement, unless a recognized exception applies. The rationale is to deter misconduct and protect constitutional rights; otherwise, improper actions could lead to more incriminating material being admitted.

Note how this differs from Miranda, which concerns warnings given to suspects and the admissibility of statements themselves, or from the Public Safety exception, which is a narrow exception to Miranda in emergencies. The Exclusionary Rule covers inadmissibility of illegally obtained evidence, but the question focuses on evidence derived from that taint, which is precisely what the Fruit of the Poisonous Tree Doctrine governs.