The 9th Circuit allows for supplemental argument in some cases where supplemental instructions have been given. United States v. Fontenot, 14 F.3d 1364, 1368 (9th Cir. 1994). Such supplemental arguments are meant to cure any prejudice caused by the introduction of a new theory into the case after the evidence has closed and the jury has retired to deliberate. United States v. Hannah, 97 F.3d 1267, 1269 (9th Cir. 1996).
In United States v. Evanston, 2011 U.S. App. LEXIS 13647 (7/5/2011, 9th Cir. Ariz., No. 10-10159) no new theory or supplemental instruction was presented.
Accordingly, the supplemental arguments erroneously “intruded upon the jury's fact-finding role in two ways and through two conduits: (1) the judge's questioning as to the reasons for the deadlock required that the jury divulge the state of its unfinished deliberations, thereby violating the jury's deliberative secrecy, [citations] and (2) the parties' supplemental arguments, coupled with the judge's insistence on continuing after a second deadlock, injected the court and the attorneys into the jury's deliberative process, thereby raising the specter of jury coercion.” See also Diane E. Courselle, Struggling with Deliberative Secrecy, Jury Independence, and Jury Reform, 57 S.C. L. Rev. 203, 225 (Autumn 2005), ["Coercive comments do not infringe upon deliberative secrecy because they do not require revelation of the jurors' thought processes, but [they] diminish the jury's independence . . . . In other words, coercive comments may not let the jury's thoughts out of the deliberation room, but they let the judge's influence in."].
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PG IX(H)(4) Right To Reargue After Supplemental Instructions