Wanling Su, Indiana University, Bloomington, has posted her amicus brief in Kian v. Florida (25-6623):
--Dan ErnstWilliams v. Florida centered on a historical premise: Although the common law jury unquestionably consisted of twelve members, the historical record was too “scanty” to say that the Framers intended that the Constitution preserve the twelve-juror requirement. 399 U.S. at 92–93. The Court could not find “a single instance where concern was expressed for preservation of the traditional number 12.” Colgrove v. Battin, 413 U.S. 149, 156 n.10 (1973). It presumed that the dearth of historical evidence could be attributed to the Founders’ indifference toward the number of jurors seated for trial. In the Court’s words, “the most likely conclusion to be drawn is simply that little thought was actually given to the specific question we face today.” Williams, 399 U.S. at 98–99.
(DRE/DPE Collection)
That historical premise hasn’t survived scrutiny. Part of the problem was an incomplete record: historical materials unknown or unavailable to the Court now supply the evidence that Williams thought was missing. Those materials—ranging from Founding-era practices and legal authorities to early American state-court decisions—undermine what Williams inferred from silence. Furthermore, evidence that the Court considered in Williams and subsequently in Colgrove was misunderstood: The supposed Pennsylvania counterexample of smaller juries concerned a pre-Penn regime that vanished more than a century before the Sixth Amendment’s ratification. Dictionaries and treatises that supposedly didn’t show twelve was necessary in fact said just that. Justice James Wilson’s supposed indifference to the twelve-juror requirement was actually commentary on the distinction between grand and petit juries. And a postbellum South Carolina court decision invoked as supposed support for eight-juror panels rested on an extraordinary provision in the State’s 1865 constitution, adopted as part of a racially discriminatory and anti-Reconstruction regime.
With a more complete record and proper understanding of it, the answer to the juror-number question becomes plain. When the Framers guaranteed criminal defendants trial by an impartial jury, they used a settled legal term that meant twelve.






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