OPINION
Calvin Woodrow Barfield appeals his conviction on three counts of interstate transportation of forged securities in violation of 18 U.S.C. § 2314. Finding no error by the district court, we affirm.
I.
In 1988, defendant-appellant Barfield was charged in a superseding indictment with three counts of interstate transportation of forged securities in violation of 18 U.S.C. § 2314. Both the government and defense counsel moved for a pretrial psychiatric evaluation to determine appellant’s mental condition at the time the offense was committed and to ascertain his competence to stand trial. By court order, Mr. Barfield was taken into custody and held for psychological and psychiatric examinations.
In June, 1989, the Warden of the Federal Correctional Institution in Butner, North Carolina 1 reported to the Court that at the time of the commission of the offense, appellant was suffering from a mental disease or defect which rendered him unable to understand the nature and consequences of his actions. In addition, the doctor concluded that Barfield was unable to assist his attorney in preparing his defense. The doctor diagnosed the defendant as suffering from primary, degenerative dementia of the Alzheimer’s type.
On August 17, 1989, Magistrate Judge Paul Taylor held a hearing to determine appellant’s competence to stand trial. Bar-field was not present at the hearing, but he was represented by his court appointed lawyer, Mr. Charles Morgan. In response to the Court’s inquiry concerning Barfield’s presence, Mr. Morgan informed the Court that he had not sought a waiver because appellant “was found to be incompetent by the authorities at Butner.” Mr. Morgan then attempted to waive Barfield’s appearance for him. The court heard testimony from a psychologist at Butner which supported the earlier diagnosis of incompetence to stand trial. Because the doctor suspected that Barfield was feigning mental illness, the court continued the hearing for 60 days without finally determining appellant’s competence tó stand trial.
In a significant deviation from their earlier diagnosis, defendant’s doctors reported to the court just prior to the next hearing that Mr. Barfield was mentally competent. At the second competency hearing on November 9, 1989, the court granted the motion of appellant’s counsel for an independent psychological evaluation, and deferred ruling on the issue of Barfield’s competence until additional information was compiled. Barfield was present at this second hearing and at the third competency hearing which was held on March 7, 1990. At the last hearing, the Court concluded that Barfield was competent at the time of the commission of the offense and was competent to stand trial.-
*1556 Appellant informed the district court on April 13, 1990 that he wished to proceed pro se and that he intended to rely on the insanity defense at trial. The court conducted another hearing in which it granted appellant’s motion to represent himself at trial and retained Mr. Morgan as standby counsel. The trial commenced on July 9, 1990, and the jury returned a guilty verdict against appellant on all counts the next day.
On appeal, Barfield argues that (1) his absence from the first competency hearing violated his constitutional rights; (2) venue in the Western District of North Carolina was improper; (3) the court committed reversible error by failing to inquire of defendant whether he wanted the assistance of stand-by counsel during jury selection; and (4) the court improperly denied the defendant’s motion for judgment of acquittal at the close of the government’s case.
II.
The central issue before us is whether defendant’s absence at the competency hearing held on August 17,1989 is grounds for reversal. Barfield argues that his exclusion from the August hearing deprived him of due process of law and of his right to a fair trial. Appellant relies primarily on
Sturgis v. Goldsmith,
We agree that a competency hearing is a critical stage of a defendant’s trial.
2
Under this theory, Barfield’s exclusion from the August 17,1989 competency hearing violated his constitutional right to due process of law and his right to a fair trial.
3
Barfield’s absence, however, must be deemed harmless error if he was in fact competent at the time of trial.
See
The record clearly demonstrates that the defendant’s absence from the August 17 competency hearing was harmless error because the government has proven that Barfield was in fact competent at the time of trial. Rather than undermining Barfield’s claim of incompetence, the testimony presented at the hearing tended to show that Barfield was not competent. In addition, unlike Sturgis, in which the trial court determined that the defendant was competent after both hearings held in his absence, the court did not make a final decision about Barfield’s competency at the August 17 hearing. Instead, the magistrate judge continued that hearing for sixty days to enable doctors to further observe the defendant, to evaluate his condition, and to investigate the suggestion that the defendant was malingering. The final determination of the defendant’s competence was made only after a competency hearing at which Barfield was present. Finally, the progressive nature of a disease like Alzheimer’s would seriously impair a person’s ability to manage complicated, detailed facts and sophisticated legal principles; appellant’s ability to represent himself at trial in a complex case is further proof of the fact that he was competent to stand trial. Nothing in the record supports Barfield’s argument that he was deprived of due process and a fair trial. The court committed harmless error by conducting the August 17 hearing, at which no final determination of competency was made, in the defendant’s absence.
HI.
Appellant also argues that we should reverse his conviction because venue in the Western District of North Carolina was improper. Under 18. U.S.C. § 3237(a),
4
jurisdiction over the prosecution of a continuing offense lies in any district in which any portion of the offense occurred. In
Lord v. United States,
*1558 IV.
Barfield also claims that the district court committed reversible error by failing to ask the appellant before jury selection whether he wanted assistance of standby counsel. When the magistrate judge granted his motion to proceed
pro se,
Barfield was properly informed of his constitutional right to represent himself at trial pursuant to
Faretta v. California,
V.
Finally, Barfield asserts that the district court erred by denying his motion for judgment of acquittal at the conclusion of the government’s case. He argues that the government failed to prove the defendant’s sanity beyond a reasonable doubt. A motion for judgment of acquittal must be denied if, after viewing the evidence in the light most favorable to the government, “any rational trier of fact could have found the essential elements of the crime beyond a reasonable doubt.”
Jackson v. Virginia,
In support of his insanity defense, the record reveals that Barfield called two expert witnesses who testified on both direct and cross examination that Barfield had originally tried to mislead his doctors about his putative mental incapacity. After extensive observation, though, both experts concluded that Barfield was competent at the time of the offense and competent to stand trial. Because this testimony undermined, rather than supported, the defendant’s insanity defense, it cannot consti *1559 tute the “slight” evidence of the defendant’s insanity necessary to shift the burden of proof to the government under Brown. Even assuming, however, that Barfield did produce the requisite quantum of evidence, the testimony of the doctors who examined the defendant was a sufficient basis upon which the jury could have found beyond a reasonable doubt that the defendant was legally responsible for his actions. In addition, Barfield’s able representation of himself at trial was further evidence of his sanity. Clearly, then, the record evidence supported the conclusion that Barfield was not insane, and the district court properly denied the motion for judgment of acquittal.
Appellant’s conviction is hereby affirmed.
AFFIRMED.
Notes
. Mr. Barfield was held at that facility while the psychological examinations were conducted.
.
But see United States v. Makris,
. We need not reach the issue of the validity of Mr. Morgan’s purported waiver of Barfield’s presence because Mr. Morgan conceded at the August 17 competency hearing that he did not seek to secure a waiver from Barfield. In addition, our harmless error analysis obviates the need to reach the question of waiver.
. 18 U.S.C. § 3237(a) provides:
[A]ny offense against the United States begun in one district and completed in another, or committed in more than one district, may be inquired of and prosecuted in any district in which such offense was begun, continued, or completed.
Any offense involving the use of the mails, transportation in interstate or foreign commerce, ... is a continuing offense and ... may be inquired of and prosecuted in any district from, through, or into which such commerce, mail matter, or imported object or person moves.
. In
McKaskle,
the Supreme Court stated that "[a] defendant does not have a constitutional right to receive personal instruction from the trial judge on courtroom procedure. Nor does the Constitution require judges to take over chores for a
pro se
defendant that would normally be attended to by trained counsel as a matter of course."
.
In its
Handbook on the Comprehensive Crime Control Act of 1984,
the Department of Justice states that certain sections of IDRA, including the statutory standard, the burden of proof provisions, the automatic commitment procedures of 18 U.S.C. § 4243, and the use of the special verdict in 18 U.S.C. § 4242, do not apply to conduct which occurred before October 12, 1984, the effective date of the statute.
Handbook
at 65 (citing
Dobbert v. Florida,
