Which court case establishes the fruit of the poisonous tree doctrine?

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Multiple Choice

Which court case establishes the fruit of the poisonous tree doctrine?

The key idea is that when law enforcement violates a person’s rights, not only the directly obtained evidence is at risk, but also any further evidence that flows from that illegal act. This is the fruit of the poisonous tree concept: tainted initial conduct can contaminate later discoveries, so courts typically suppress what was found as a result of the violation. Wong Sun v. United States is the case that crystallizes this approach. The Court held that evidence obtained as a result of an unlawful arrest or search should be excluded, and it also explained how the taint can be weakened or severed if enough independent, intervening factors occur—such as time passing, intervening events, or an independent source supplying the information. This case solidified the doctrine and gave the famous phrase its footing in constitutional law. Other listed cases address different protections: Mapp v. Ohio extended the exclusionary rule to state courts, Miranda v. Arizona concerns the rights to warnings and counsel, and Katz v. United States deals with privacy expectations.

The key idea is that when law enforcement violates a person’s rights, not only the directly obtained evidence is at risk, but also any further evidence that flows from that illegal act. This is the fruit of the poisonous tree concept: tainted initial conduct can contaminate later discoveries, so courts typically suppress what was found as a result of the violation.

Wong Sun v. United States is the case that crystallizes this approach. The Court held that evidence obtained as a result of an unlawful arrest or search should be excluded, and it also explained how the taint can be weakened or severed if enough independent, intervening factors occur—such as time passing, intervening events, or an independent source supplying the information. This case solidified the doctrine and gave the famous phrase its footing in constitutional law.

Other listed cases address different protections: Mapp v. Ohio extended the exclusionary rule to state courts, Miranda v. Arizona concerns the rights to warnings and counsel, and Katz v. United States deals with privacy expectations.

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