Facts
- Viven Harris was indicted in New York on two counts for twice selling heroin to an undercover police officer.
- At trial, the undercover officer described the two alleged sales; other officers provided corroboration and chemical analysis evidence.
- After arrest, Harris gave a statement to police without full Miranda warnings, including the failure to advise him of a right to appointed counsel if indigent.
- The prosecution did not introduce the statement in its case-in-chief.
- Harris testified and denied the January 4 sale; he admitted a January 6 transaction but claimed he sold baking powder rather than heroin.
- On cross-examination, the prosecution used Harris’s unwarned statement to challenge inconsistencies between his trial testimony and his earlier account.
- The statement itself was not admitted as an exhibit for the jury; the prosecutor read from it during questioning.
- The trial court instructed the jury to consider the statement only to assess credibility, not as evidence of guilt.
- The jury convicted Harris on the second count (the January 6 transaction).
Issues
- Whether a defendant’s statement obtained without full Miranda warnings, inadmissible in the prosecution’s case-in-chief, may be used to impeach the defendant’s credibility after he testifies.
- Whether such impeachment use violates the Fifth, Sixth, or Fourteenth Amendments as applied through Miranda.
Decision
- The Supreme Court affirmed the conviction in a 5–4 decision.
- The Court held that statements inadmissible under Miranda for the prosecution’s case-in-chief may be used to impeach a defendant’s trial testimony.
- The Court reasoned that Miranda does not require exclusion of unwarned statements “for all purposes” at trial.
- The Court emphasized that impeachment use is permitted only if the statement satisfies legal standards of trustworthiness.
- The Court accepted the limiting instruction restricting the jury’s use of the statement to credibility.
Legal Principles
- Miranda bars use of unwarned custodial statements as substantive proof in the prosecution’s case-in-chief.
- A defendant who testifies may be impeached with prior inconsistent statements, even if those statements are Miranda-defective, so long as they are voluntary and reliable.
- Exclusionary rules are not absolute when the defendant’s testimony creates a conflict that can be tested through impeachment.
- Limiting instructions may confine the jury’s consideration of such statements to credibility rather than guilt.
Conclusion
A Miranda-defective statement cannot be used to prove guilt in the prosecution’s case-in-chief, but it may be used to impeach a defendant who elects to testify, provided the statement is trustworthy and the jury is instructed to consider it only for credibility.