Facts
- Doyle and Wood were arrested together in Ohio and charged with selling ten pounds of marijuana to a police informant.
- After arrest, both received Miranda warnings.
- Each defendant was tried separately and convicted.
- At trial, each defendant testified and offered an exculpatory account for the first time, asserting they had been framed and that the informant was the actual seller.
- Over objection, the prosecutor cross-examined each defendant about why he did not tell this exculpatory story to police at the time of arrest, after receiving Miranda warnings.
- The prosecution’s questioning invited the jury to treat the defendants’ post-warning silence as undermining the credibility of their trial testimony.
Issues
- Whether the Due Process Clause permits a prosecutor to impeach a defendant’s trial testimony by cross-examining the defendant about his post-arrest silence after receiving Miranda warnings.
Decision
- The Supreme Court reversed the Ohio Court of Appeals and remanded.
- The Court held that using a defendant’s silence at the time of arrest, after Miranda warnings, for impeachment violates the Due Process Clause of the Fourteenth Amendment.
- The Court reasoned that post-Miranda silence is “insolubly ambiguous” because it may reflect the exercise of the right to remain silent.
- The Court concluded that Miranda warnings implicitly assure an arrestee that silence will not be penalized, making it fundamentally unfair to use that silence to attack credibility at trial.
- The Court distinguished impeachment with prior inconsistent statements, which remains permissible, from impeachment based on silence following Miranda warnings.
Legal Principles
- A prosecutor may not impeach a defendant’s trial testimony by using the defendant’s post-arrest silence after Miranda warnings.
- Post-Miranda silence is not a prior inconsistent statement and cannot be treated as substantive evidence of fabrication or guilt for impeachment purposes.
- The constitutional violation rests on due process: the State may not induce silence through Miranda warnings and later penalize that silence by using it against the defendant.
Conclusion
Because Miranda warnings carry an implicit assurance that exercising the right to remain silent will not be used against the arrestee, due process forbids prosecutorial impeachment based on a defendant’s post-arrest, post-warning silence.