Bernard D. Byers appeals his conviction of three misdemeanor counts of willful failure to file tax returns, 26 U.S.C. 8 7203 (1976). Byers’ trial was held, with his written consent, before a United States Magistrate. During the trial, Byers sought to introduce psychiatric testimony to show that he was not capable of forming specific intent to fail to file tax returns during the years in question. The magistrate ruled the testimony inadmissible. Byers appealed to the district court, which affirmed the evidentiary ruling and the conviction.
On appeal to this court, Byers challenges the constitutionality of 18 U.S.C. § 3401 (1982), which permits magistrates to preside over criminal misdemeanor trials with the parties’ consent. He also challenges the decision to exclude the psychiatric testimony. We affirm.
18 U.S.C. § 3401 provides:
(a) When specially designated to exercise such jurisdiction by the district court or courts he serves, any United States magistrate shall have jurisdiction to try persons accused of, and sentence persons convicted of, misdemeanors committed within that judicial district, (b) Any person charged with a misdemeanor may elect, however, to be tried before a judge of the district court for the district in which the offense was committed. The magistrate shall carefully explain to the defendant that he has a right to trial, judgment, and sentencing by a judge of the district court and that he may have a *570 right to trial by jury before a district judge or magistrate. The magistrate shall not proceed to try the case unless the defendant, after such explanation, files a written consent to be tried before the magistrate that specifically waives trial, judgment, and sentencing by a judge of the district court....
Byers argues that Article III of the Constitution prohibits the exercise of judicial power by persons who do not have the protections of lifetime tenure and undimin-ishable salary. He also contends that the right to an Article III judge is jurisdictional and cannot be waived by consent.
Byers’ arguments must be evaluated in light of
Pacemaker Diagnostic Clinic of America, Inc. v. Instromedix, Inc.,
The provision for consensual reference of criminal misdemeanors contained in 18 U.S.C. § 3401 is similar to the provision for civil cases approved in Pacemaker. Indeed, Congress passed both provisions together in their present form as part of an effort to expand and clarify the magistrate’s jurisdiction. Federal Magistrate Act of 1979, Pub.L. No. 96-82, 93 Stat. 643 (amending 18 U.S.C. § 3401 and 28 U.S.C. § 636). See S.Rep. No. 74, 96th Cong., 1st Sess. 1, reprinted in 1979 U.S.Code Cong. & Ad.News 1469. Both require the voluntary, written consent of the parties to have a case tried before a magistrate, see 18 U.S.C. § 3401(b) and 28 U.S.C. § 636(c)(1) and (2), and both allow the district court to remove a consensual reference upon its own motion. See 18 U.S.C. § 3401(f) and 28 U.S.C. § 636(c)(6). Given the Pacemaker majority’s emphasis on the curative effects of consent by the parties and control by Article III judges, we cannot, consistent with Pacemaker, hold that consensual reference of criminal misdemeanors violates the Constitution.
Byers also suggests that his consent to trial by a magistrate was not voluntary. It is true that
Pacemaker
requires consent to be “freely and voluntarily undertaken.”
Pacemaker,
With respect to the exclusion of the psychiatric evidence, Byers argues that failure to file tax returns is a specific intent crime and that the psychiatrist’s testimony was relevant to show that his actions were negligent, not willful.
See United States v. Pomponio,
An examination of the offer of proof in the present case reveals that the psychiatric testimony was ambiguous. We cannot say that the psychiatrist’s testimony would have materially assisted a jury in determining whether Byers committed a voluntary, intentional violation of known legal duty.
See United States v. Bishop,
Affirmed.
