Michigan v. Tucker
Citation and Court
417 U.S. 433 (1974) — Supreme Court of the United States
Facts
Before Miranda was decided, Tucker was interrogated without being told of his right to appointed counsel. He named a witness whose testimony then inculpated him. Tucker sought to suppress that witness’s testimony as fruit of the Miranda violation.
Issue
Whether a witness discovered through questioning that violated Miranda must be excluded as fruit of the poisonous tree.
Holding
No; the witness’s testimony was admissible because the violation was of Miranda’s prophylactic rules, not of the Fifth Amendment itself, and exclusion of the witness was not required to protect Tucker’s constitutional rights.
Rule / Doctrine
Miranda warnings are not themselves rights protected by the Constitution but rather prophylactic procedural safeguards designed to protect the Fifth Amendment privilege. Because Tucker’s statements were found to be voluntary under traditional standards, the underlying constitutional right was not violated; therefore, the fruit-of-the-poisonous-tree doctrine did not require suppression of the witness found through those statements.
Significance
Characterized Miranda as a set of prophylactic rules rather than constitutional commands, a characterization that was central to subsequent cases limiting Miranda’s reach and that was revisited in Dickerson v. United States (2000).