Tanner brought up motions for a retrial after he was declared guilty on charges of conspiracy to defraud the United States and of mail fraud. However, under the “No-Impeachment” rule, formally known as Rule 606(b) the requests for retrial were denied by both trial and appellate courts as the law clearly states that “A juror may not testify about any statement made of incident that occurred during the jury’s deliberations; the effect of anything on that juror’s or another juror’s vote; or any juror’s mental process concerning the verdict or indictment. The court may not receive a juror’s affidavit or evidence of a juror’s statement on these matters.” This ruling applies to any case in which an affidavit disclosing any information of deliberation, regardless of the racial bias in Pena-Rodriguez’s case and substance abuse in Tanner’s