United States v. Scheffer, 523 U.S. 303, 18 (1998)

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320

UNITED STATES v. SCHEFFER

Stevens, J., dissenting

state an opinion or inference as to whether the defendant did or did not have the mental state or condition constituting an element of the crime charged or of a defense thereto. Such ultimate issues are matters for the trier of fact alone." Fed. Rule Evid. 704(b).

The drafting committee for the Military Rules of Evidence renounced even this remnant. It said: "The statutory qualifications for military court members reduce the risk that military court members will be unduly influenced by the presentation of ultimate opinion testimony from psychiatric experts." Manual for Courts-Martial, United States, Analysis of the Military Rules of Evidence, App. 22, p. A22-48 (1995 ed.). Any supposed need to protect the role of the finder of fact is diminished even further by this specific acknowledgment that members of military courts are not likely to give excessive weight to opinions of experts or otherwise to be misled or confused by their testimony. Neither in the federal system nor in the military courts, then, is it convincing to say that polygraph test results should be excluded because of some lingering concern about usurping the jury's responsibility to decide ultimate issues.

Justice Stevens, dissenting.

The United States Court of Appeals for the Armed Forces held that the President violated the Constitution in June 1991, when he promulgated Rule 707 of the Military Rules of Evidence. Had I been a member of that court, I would not have decided that question without first requiring the parties to brief and argue the antecedent question whether Rule 707 violates Article 36(a) of the Uniform Code of Military Justice, 10 U. S. C. § 836(a). As presently advised, I am persuaded that the Rule does violate the statute and should be held invalid for that reason. I also agree with the Court of Appeals that the Rule is unconstitutional. This Court's contrary holding rests on a serious undervaluation of the importance of the citizen's constitutional right to present a de-

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