Thе defendant-appellant, Gregory Mick-lus, was convicted in a jury trial of attempting to escape from the Marion Federal Penitentiary on July 22, 1976, in violation of 18 U.S.C. §§ 2 and 751(a). On appeal the defendant asserts that the trial court committed reversible error in a number of respects:
1) The defendant was deprived of the effective аssistance of counsel when his trial attorney failed to request, *614 and the judge failed to give, an instruction on the defense of “necessity” as well as the defense of “duress.”
2) The court improperly denied the defendant’s request that a subpoena be issued at government expense to a psychologist formerly employed at Mariоn who had examined the defendant at various times prior to the escape attempt.
3) The trial judge unreasonably restricted defendant’s trial counsel’s examination of certain witnesses.
4) The defendant was deprived of a fair trial by prejudicial comments by the prosecutor in cross-examination and in closing argument.
We affirm.
Taken in the light most favorable to the government,
Glasser v. United States,
The above facts were not contested by the defendant at trial. Instead, he pursued a two-pronged defense on the theory that his actions were the result of inexorable external pressures. Firstly, he argued that his initial decision to escape was motivated by fear of a homosexual assault by an inmate named Beckley, now deceased. Secondly, he argued that at the last minute he decided to withdraw from the escape attempt but was coerced into continuing by Newman, who put a knife to his throat and threatened to kill him if he didn’t come along. Most of the defendant’s assertions of error relate to constraints on his ability to develop the first of these two theories at trial.
I.
In his opening and closing statements and by the questioning of witnesses, the defendant’s trial counsеl developed his theory that Micklus was “coerced” into attempting to escape by the fear of sexual attack, and at the last minute, by Newman’s threats. In the opening and closing statements he argued that this element of coercion or compulsion negated the existence of the requisite mens rea for the crime charged, i. e., voluntariness or wilfulness. A jury instruction on the theory of “coercion or duress” was demanded and granted. 1 Defendant’s counsel on appeal now argues that the facts called for the development of the defense theory of “necessity” as well as “coercion,” particularly with .regard to the fear of sexual assault. It is further аsserted that the failure of defendant’s trial attorney to develop such a defense and to seek an appropriate jury instruction denied defendant of *615 the effective assistance of counsel and that the judge’s resulting failure to give such an instruction was plain error. We cannot agree.
The defendant has not been able to cite any cases in a federal jurisdiction in which “necessity” has been permitted as a theory of defense in an escape prosecution. However, defendant has pointed to developing case law in certain other jurisdictions concerning the differences between the concepts of “necеssity” and “duress” as applied in this area.
See, e. g., People
v.
Unger,
We do not believe that the defendant was deprived of the effective assistance of counsel in this case. Since federal law has not recognized “necessity” as a defense in prison escape cases, to hold otherwise would mean that a defendant would have been deprived of the effective assistance of counsel merely because his attorney failed to attempt to pioneer new law in the jurisdiction and where the change in question had been accepted in only a handful of other jurisdictions. Here, defendant’s trial counsel was able to extensively develop the facts concerning the sexual pressures exerted on the defendant. He also requested and was granted a “coercion” instruction. Even under a necessity theory the defendant would have had to show that there was no other way of avoiding the sexual assault short of escape from prison. We conclude that the trial counsel’s failure to dеvelop the necessity theory does not mean that the legal assistance provided the defendant fell below the constitutionally required minimum standard of professional representation.
United States ex rel. Williams
v.
Twomey,
For related reasons we cannot characterize as “plain error” the trial judge’s failure to give the jury an instruction that was never requested and which has never been recognized by federal law as being appropriate in prison escape prosecutions.
II.
The defendant’s next contention is that the trial court committed prejudicial error by denying defendant’s request to subpoena a witness at government expense pursuant to Rule 17(b) of the Federal Rules of Crimi *616 nal Procedure. That rule requires that a subpoena issue “upon a satisfactory showing that the defendant is financially unable to pay the fees of the witness and that the presence of the witness is necessary to an adequate defense.” The burden of making the showing in the first instance is on the defendant. In the present casе, the defendant sought the attendance at trial of a prison psychologist currently employed in Wisconsin who had interviewed the defendant in the prison at Marion, Illinois sometime before his escape attempt. The defendant’s request stated that:
It is part of the defense of coercion or compulsion (duress) that any compulsion or duress placed on the defendant be among other things, of such a nature as to induce a well-founded fear of impending death or serious bodily injury. Dr. Carr can testify as to the foundations of defendant Micklus’ fears, and also as an expert witness with regard to prison life at Marion . . . . This testimony . would tend to show the reasonableness оf the compulsion and the fear which the defendant intends to testify about.
The trial court denied Micklus’ request on the grounds that Dr. Carr’s testimony would be too remote and cumulative of other witnesses.
The trial judge is granted wide discretion in deciding whether a subpoena should issue,
United States v. Greene,
III.
The defendant’s third argument is that he was deprived of due process by the court’s restrictions of his counsel’s examination of certain witnesses. In his direct examination of Newman, Micklus’ trial counsel tried to establish the futility of trying to avoid sexual pressure by any means short of escape. In this area, Newman testified about the uselessness of asking to be put in segregation or to be transferred to another prison. On cross-examination, the government asked Newman why Micklus couldn’t have reported the sexual pressure to his caseworker, to which Newman responded that it would have branded Micklus as a stool pigeon and that stool pigeons don’t last long in prison. On redirect, Micklus’ attorney again asked Newman why Micklus couldn’t have takеn his complaints through official channels, to which Newman again replied that he would have been branded as a stool pigeon and that stool pigeons can be “gotten to” anywhere in the penitentiary. Defense counsel next tried to find out who would carry out these threats, at which point the court sustained an objection by thе government. Micklus’ attorney then attempted to return to the uselessness of using prison complaint procedures. After *617 the following exchange took place between the judge and defense counsel, the court again sustained the government’s objection.
Defense Counsel: Well, your honor . [the prosecutor] asked questions about the procedures which the witness answered on cross, and I’m inquiring into that.
The Court: Well, you went into it on direct, too, about the possibility of him going into segregation, so it’s really not an issue, is it? It’s been gone into by both of you.
Defense Counsel: That’s correct.
The trial judge has broad discretion in assessing the relevancy or materiality of evidence.
United States v. Bolin,
The second instance of a restriction of the defense counsel’s examination of a witness occurred after an inmate named Mathews testified that he had raped Micklus at knife-point. When defense counsel sought to ask the witness where he got the knife and how hе was able to do this act in prison, the court sustained the government’s objection that the question was immaterial. We agree that the source of the knife was immaterial. Also, in view of the fact that the witness was otherwise permitted to develop his story of the alleged rape, we cannot conclude that the judge’s ruling affectеd a substantial right of the defendant as is required by Fed.R.Evid. 103(a) in order to justify reversal.
IV.
The defendant’s last contention is that he was denied due process by prejudicial comments by the prosecutor during the questioning of witnesses and in closing argument. However, in one of the instances cited by the defendant, the judge sustained the defense’s objection to the prosecutor’s question 'at issue and in the remaining instances there was no defense objection at all. Although there are limits on how far a prosecutor may go in his comments about the defendant’s theories or witnesses,
see, e. g., Berger v. United States,
*618 The judgment of the district court is AFFIRMED.
Notes
. The instruction given to the jury was as follows:
“Coercion or compulsion may provide a legal excuse for the crime charged in this indictment. In order, however, to provide a legal excuse for any criminal conduct, the compulsion must be present and immediate and of such a nature as to induce a well-founded fear of impending death or serious bodily injury. And there must be no reasonable opportunity to escape the compulsion without committing the crime or participating in the commission of the crime. Acts done under such coercion or compulsion are not done willfully. If the evidence in the case, leaves you with a reasonable doubt that the defendant at the time and place of the offense alleged in the indictment, acted willfully and voluntarily and as a result of coercion, compulsion, or duress, as just explained, then it is your duty to find the defendant not guilty.” (tr. 128.)
. The defendant would still have to show that there was no other way of escaping the assaults that would be even less harmful than the route chosen.
. The instances cited by the defendant are as follows:
a) At the end of his cross-examination of Newman, the prosecutor stated:
Isn’t it true, Mr. Newman, that you decided to take the rap so to speak, and you’re just doing Mr. Micklus a friend [sic] in trying to corroborate the story that he’s dreamed up about why he was trying to escape, or what сaused him to escape? I suggest to you, sir, that that is, in fact, the truth and not this concoction you’ve come in here with today. .
No objection was raised by the defense. b) In his cross-examination of Mathews the prosecutor tried to bring out the fact that the latter would be in prison for life and that he had nothing to lose by lying. The following question was asked:
I’m asking you. It wouldn’t bother you any, to come in here and lie from the time you started to the time you stopped, would it?
The court sustained a defense objection, stating that the question was argumentative, c) Lastly, in closing argument, the prosecutor made the following comments:
The government argues that these witnesses were lying; that they didn’t have any reason to do anything other than lie. “. . . coercion garbage. . . ” Believe you me, any prisoner would want to serve federal time before he’d serve state time. Mathews would come in and *618 say anything all day long. The other witnesses were no better.
[The defendant] comes in here and brings these prisoners in and tries to concoct the story that you’ve heard told to you today. There was no objection or motion to strike by the defense.
