## Facts

- Miguel Angel Peña-Rodriguez was tried in Colorado state court for attempted sexual assault, unlawful sexual contact, and harassment based on allegations by two teenage sisters.
- The prosecution relied on the victims’ identification; the defense presented an alibi witness.
- The jury convicted Peña-Rodriguez of unlawful sexual contact and harassment, but acquitted on attempted sexual assault.
- After the verdict, two jurors reported that another juror made overt anti-Hispanic statements during deliberations linking guilt and witness credibility to ethnicity and immigration status.
- The two jurors provided affidavits describing statements that “Mexican men” take what they want, that they are usually guilty of aggression toward women and girls, and that the alibi witness was “an illegal.”
- The trial court found the juror had expressed anti-Hispanic bias but refused to consider the affidavits under Colorado Rule of Evidence 606(b) and denied a new trial.
- Colorado appellate courts affirmed, applying the state no-impeachment rule and rejecting a Sixth Amendment challenge.

## Issues

1. Whether the Sixth Amendment impartial-jury guarantee requires an exception to the no-impeachment rule when juror statements show that racial animus was a significant motivating factor in a vote to convict.

## Decision

- The Supreme Court reversed and remanded in a 5–3 decision.
- The Court held that the Sixth Amendment requires the no-impeachment rule to yield when a juror makes a clear statement indicating reliance on racial stereotypes or animus to convict.
- The Court concluded that Colorado’s categorical exclusion of the juror affidavits violated the defendant’s right to an impartial jury.
- The Court required a threshold showing of overt racial bias that tends to show racial animus significantly motivated the juror’s vote and casts serious doubt on the verdict’s fairness.
- The Court did not prescribe detailed procedures or a precise standard for when a new trial must be granted, leaving implementation to lower courts.

## Legal Principles

- The no-impeachment rule generally bars juror testimony about deliberations to challenge a verdict, subject to limited exceptions.
- The Sixth Amendment requires a constitutional exception to that rule when there is a threshold showing that a juror made clear, overt statements reflecting racial stereotypes or animus as a significant motivating factor in convicting.
- The exception is limited to racial bias and is triggered by explicit statements that call the impartiality and fairness of the deliberations and verdict into serious doubt.
- Standard trial safeguards (e.g., voir dire and courtroom observation) may be insufficient when racial bias emerges only in deliberations, so courts must be able to consider post-verdict juror evidence meeting the threshold.

## Conclusion

The Court recognized a narrow Sixth Amendment exception to the no-impeachment rule, requiring courts to consider juror evidence of overt racial animus that significantly motivated a conviction, because such bias is incompatible with an impartial jury.


Peña-Rodriguez v. Colorado, 580 U.S. 206 (2017)