Zoltán Takacs appeals the district court’s denial of his petition for a writ of habeas corpus. See 28 U.S.C. § 2254. Takacs is attacking state convictions of aggravated burglary, aggravated robbery and felonious assault. These convictions are predicated on a theft from a jewelry store owned by one Temesi. According to Temesi’s testimony, Takacs and two other men entered the store and committed the robbery. Larry Hudak pleaded guilty to participating in the crime and testified for the government. According to Hudak, Takacs planned the robbery because Temesi owed him money. Takacs did not dispute at trial that he was a participant in the event, but claimed that he did not know of the intended robbery before entering the store and *124 that after the robbery began he went along with it out of fear for his life.
I.
Takacs first attacks his convictions by arguing that he was denied counsel at his preliminary hearing. It is undisputed that Takacs was unrepresented by counsel at the preliminary hearing, but the state courts found this error to be harmless and the district court reached the same conclusion. Takacs argues that a complete denial of counsel at any one criminal proceeding, as opposed to mere ineffective assistance of counsel, can never be considered harmless error. He relies on language from Supreme Court cases which is best characterized as dicta.
See Strickland v. Washington,
The Supreme Court first recognized that the right to counsel extends to a preliminary hearing in
Coleman v. Alabama,
II.
Takacs next presents an argument relating to his trial counsel’s previous representation of Hudak, an accomplice who eventually testified for the government. Although the cases cited by Takacs concern possible ineffective assistance of counsel *125 due to a conflict of interest, he also implies that Hudak’s testimony should not have been admitted due to the prior representation. Insofar as Takacs argues that Hudak’s testimony implicates his sixth amendment right to counsel, he misconceives his remedy. If Hudak’s testimony adversely affected the performance of Takacs’ counsel, then his remedy is to complain of his counsel’s effectiveness, not of the admission of Hudak’s otherwise unobjectionable testimony.
Turning to the sixth amendment question, a defendant’s counsel’s prior representation of a government witness can sometimes lead to ineffective assistance. The principal problem in such cases is that a counsel’s cross-examination of his prior client may be inhibited by his knowledge of privileged information.
See, e.g., Ross v. Heyne,
III.
Takacs’ third claim is that the state trial court unconstitutionally limited the scope of his cross-examination of adverse witnesses. Limitations on cross-examination undoubtedly implicate a defendant’s sixth amendment rights.
See Davis v. Alaska,
After examining the several instances of asserted improper limitation presented by Takacs, we find no sixth amendment violation. Some of the excluded cross-examination was simply immaterial (such as questions going to whether Temesi had once engaged in a fencing operation and the circumstances of Hudak’s guilty plea). Other portions of the cross-examination called for excludable hearsay (the questions asking what Takacs had told Hudak about Temesi’s debt to him). Finally, some of the cross-examination arguably was irrelevant and definitely called for speculation (the questions about the motives of the FBI in interviewing Hudak). Moreover, although Takacs vaguely asserts that this cross-examination concerned “vital areas” of the case, he has failed to identify precisely what he hoped to elicit from these questions and what bearing it would have had on the case.
IV.
Takacs argues that the state unconstitutionally required him to prove duress as an affirmative defense. There are two prongs to this argument. First, the state must bear the burden of proving beyond a reasonable doubt every element of the offense charged.
See Mullaney v. Wilbur,
A.
The first question is determined by examining how Ohio characterizes the defense of duress. An affirmative defense is defined in Ohio as one which is “expressly designated as affirmative” or one which involves “an excuse or justification peculiarly within the knowledge of the accused, on which he can fairly be required to adduce supporting evidence.” Ohio Rev.Code § 2901.05(C). Ohio courts have held that entrapment, insanity, self-defense and the use of reasonable force to affect a citizen’s arrest are all affirmative defenses under § 2901.05.
See State v. Doran,
There appear to be no Ohio authorities authoritatively characterizing the nature of the defense of duress. In
State v. Cross,
B.
Some of the same considerations are relevant to determining the second question, whether the presence of duress negates an element of the crime. Takacs argues that duress negates a mens rea element necessary to establishing any criminal liability. Ohio requires a “voluntary act” as an element of every crime. See Ohio Rev.Code § 2901.21(A)(1). A voluntary act is defined in the negative:
Reflexes, convulsions, body movements during unconsciousness or sleep, and body movements that are not otherwise a product of the actor’s volition, are involuntary acts.
Ohio Rev.Code § 2901.21(C)(2).
We do not believe that proof of duress negates the voluntary act requirement. The
Metcalf
holding — that duress is not a valid defense to the most serious crimes — reveals that duress has no relation to the voluntary act requirement: if duress negates the voluntary act requirement, it would do so for all crimes, including the taking of an innocent life. The voluntary act requirement is a narrow one, removing only truly uncontrollable physical acts from criminal liability, and is easily satisfied even when a person acts under duress. This conclusion is supported by two recent Sixth Circuit decisions. In
Thomas v. Arn,
we held that proof of self-defense does not negate the voluntary act requirement.
See
V.
Takacs also challenges the trial court’s instructions on duress. Takacs had requested an instruction which included both duress and “coercion ... brought upon by moral force.” The trial court did not give this instruction and instead instructed only on duress, focusing on physical force. It is not readily apparent how the instruction, even if erroneous under state law, becomes a constitutional error. Assuming some constitutional right is at stake, no substantive error occurred. Under Ohio law the principal distinction between duress and coercion is between, on the one hand, physical force and, on the other, moral force.
State v. Woods,
VI.
Takacs next raises two issues concerning accomplice testimony. He asserts that a conviction based solely on uncorroborated accomplice testimony is not supported by constitutionally sufficient evidence. Second, he argues that the jury should have been instructed on this principal.
A.
The Constitution says nothing about accomplice testimony. Due process does require, however, that the evidence adduced at trial, when viewed in the light most favorable to the government, be sufficient to persuade a rational trier of fact that the defendant is guilty beyond a reasonable doubt.
Jackson v. Virginia,
B.
Given this conclusion, Takacs’ claim that the jury instructions should have limited the weight to be given to Hudak’s testimony must also fail. If uncorroborated accomplice testimony is sufficient to support a conviction under the Constitution, there can be no constitutional right to instruct the jury that it must find corroboration for an accomplice’s testimony.
VII.
Finally, Takacs presents a speedy trial clause argument. Takacs was arrested on February 25, 1980 and his trial began on September 11, 1980. Much of Takacs’ argument asserts that this delay violated an Ohio statutory speedy trial provision. Whatever the merits of this argument, it does little to advance a claim that Takacs was denied a constitutional right to a speedy trial.
Nor does it appear that Takacs was denied his constitutional right to a speedy trial under the sixth amendment. In
Barker v. Wingo,
In this case, there was a delay of approximately six and one-half months. This is probably a sufficient length of time to trigger an inquiry into the other factors.
See Cain,
First, although the length of the delay is sufficient to necessitate further inquiry, six and one-half months is not a clearly excessive delay.
Compare Cain,
Upon considering the four factors enunciated by the Supreme Court in Barker, we conclude that Takacs’ speedy trial rights were not violated.
VIII.
For the reasons stated above, the judgment of the district court is Affirmed.
Notes
. Although other portions of Justice Brennan’s opinion represent only a plurality of the Court, its holding on harmless error drew four concurrences.
See id.
at 10 n. 4,
. The precise language of
Holloway
supports our conclusion. The Court held that automatic reversal is the rule only where the denial of counsel occurred "throughout the prosecution” or at a single, discrete "critical stage” of a prosecution for a "capital offense.”
Holloway,
. Takacs also argues that the state courts misallocated the burden of proof on the question of harmless error. Whether or not the state courts did so is irrelevant. This court is in a position to judge the question of harmless error, and if the denial of counsel was harmless error, considered under the proper standards, then the state courts’ misallocation in no way affects Takacs’ rights.
. We also note, as did the magistrate, that Temesi’s testimony provided some corroboration for Hudak’s testimony.
