This is an appeal from postconviction rulings that have denied appellant Ronald Brewer relief from his 1975 murder conviction. We affirm.
In January 1975, Brewer was an inmate at the men’s reformatory at Anamosa, Iowa. While incarcerated, he gained the friendship of a guard named Herbert Pen-nock. Pennock frequently accompanied Brewer on authorized outings beyond the prison walls.
Such an outing occurred the evening of January 29, 1975. Brewer was scheduled to teach a first-aid class at the Anamosa High School. Pennock was to provide the transportation. More importantly, Pen-nock knew Brewer viewed the event as a chance to escape.
Part of Brewer’s plan was to take a prison employee, Patricia Edwards, with him. In order to help Brewer “ward off” Patricia’s husband, Pennock furnished Brewer a rifle and ammunition. On the night of the class, Pennock dropped off Brewer at the Edwards’ home before proceeding to the high school. Brewer later returned to the high school to tell Pennock that he had shot the Edwards. Pennock then drove Brewer to Dubuque to make his getaway.
Pennock advised prison authorities that he had been kidnapped by Brewer and forced to aid his escape. It was not until some months later that Pennock admitted his role in this escapade. At Brewer’s trial, Pennock acknowledged that he was given immunity from prosecution before he would concede his involvement.
At trial, defense counsel developed an alibi theory that suggested Brewer had already escaped to Dubuque by the time the Edwards were slain. They painted Pen-nock as a liar, and attempted to convince the jury that he had nothing to lose by concocting the story described above. They suggested it was as likely that Pen-nock, or someone else, had committed the murders. On the strength of Pennock’s testimony, however, and circumstantial evidence placing Brewer at the scene of the crime, the jury found Brewer guilty of first-degree murder. We upheld the conviction on direct appeal.
State v. Brewer,
Based on alleged constitutional infirmities preserved at trial, Brewer sought habe-as corpus relief in federal court. That action was dismissed because of his failure to exhaust state remedies. He then filed the present application for postconviction relief in accordance with Iowa Code chapter 663A (1987).
Brewer’s postconviction action advances three principal grounds for reversal of his conviction. First, he contends that newly discovered evidence and a change in the law merit re-evaluation of his original claim that the statutory exclusion of persons aged sixty-five and over from his jury panel violated his sixth and fourteenth amendment rights to a fair and impartial jury. Second, he asserts that documents discovered posttrial demonstrate the State’s failure to reveal exculpatory evidence in violation of
Brady v. Maryland,
All three grounds for relief were rejected by the trial court, the first by way of summary judgment and the latter two after trial on the merits. Because of the
*80
constitutional questions involved in all three, our appellate review is de novo.
Hinkle v. State,
I. Impartial Jury. When Brewer was tried in 1975, Iowa Code sections 607.2 and 609.2 (1975), taken together, exempted persons aged sixty-five and older from serving as jurors. Brewer challenged the composition of his jury panel, claiming that such a systematic and intentional exclusion of an identifiable group of persons deprived him of his constitutional right to be tried by a jury representing a cross section of the community.
We rejected Brewer’s contention on direct appeal.
Brewer,
In support of his claim for postconvietion relief, Brewer urged the trial court’s consideration of new evidence bearing on the special perspective held by persons over age sixty-five, and refinements in the United States Supreme Court’s interpretation of the sixth amendment’s fair-cross-section-of-the-community requirement. Like the trial court, however, we are convinced that neither argument sustains Brewer’s request for a new trial.
In order to prevail on a claim of newly discovered evidence, a postconviction applicant must show:
(1) the evidence in question could not have been discovered before judgment in the exercise of due diligence; (2) the evidence is material to the issue and not merely cumulative or impeaching; and (3) its admission would likely change the result if a new trial were granted.
Stanford v. Iowa State Reformatory,
The first factor defeats Brewer’s claim. Brewer’s “new evidence” consists of the affidavits of two experts expressing their respective views that persons over age sixty-five comprise “a distinct, cognizable group in American society,” the majority of whom are “physically well ... [and] mentally able to serve on jury duty.” Neither the affiants, nor Brewer, assert that the data and conclusions contained in the affidavits could not have been discovered with due diligence at the time of Brewer’s trial. In fact, the more detailed of the two documents claims to be premised on studies published in 1975 and earlier. Clearly, such proof is insufficient to justify relief under section 663A.2(4).
Alternatively, Brewer argues that
Duren v. Missouri,
*81
Significantly,
Duren
and its predecessor
Taylor v. Louisiana,
(1) that the group alleged to be excluded is a “distinctive” group in the community; (2) that the representation of this group in venires from which juries are selected is not fair and reasonable in relation to the number of such persons in the community; and (3) that this under-representation is due to systematic exclusion of the group in the jury-selection process.
Duren,
While rejecting jury panels that were “almost totally male,” the court in
Taylor
reserved to the states the right to “prescribe relevant qualifications ... and ... reasonable exemptions so long as it may be fairly said that the jury list or panels are representative of the community.”
Taylor,
Even assuming,
arguendo,
that the court in
Brewer
should have applied Duren’s “significant state interest” test rather than a rational basis test to measure the constitutionality of age-based juror restrictions, we would still be left with the question whether Duren’s higher standard should be given retroactive application on postcon-viction review. In a strikingly similar case, the United States Supreme Court recently held that new constitutional rules of criminal procedure generally should not be applied retroactively to cases on collateral review.
See Teague v. Lane,
— U.S.-, -,
Like the present case, Teague’s fair-cross-section challenge (based on race) had been rejected by the Illinois Supreme Court in 1982 and then, in light of the Supreme Court’s decision in
Batson v. Kentucky,
Prompted by principles of finality that are at the foundation of the criminal laws’ deterrent effect, the Court reasoned that new rules should not be applied retroactively to cases on collateral review unless the change: (1) places certain types of individual, private conduct beyond the ability of lawmakers to proscribe, or (2) creates a “watershed” rule of criminal procedure implicating issues of fundamental trial fairness.
Id.
at-,
*82 Because the absence of a fair cross section on the jury venire does not undermine the fundamental fairness that must underlie a conviction or seriously diminish the likelihood of obtaining an accurate conviction, we conclude that a rule requiring that petit juries be composed of a fair cross section of the community would not be a “bedrock procedural element” that would be retroactively applied under the second exception we have articulated.
Id.
at-,
II.
The “Brady” Claim.
Brewer’s second assignment of error centers on the deal struck between the State and its star witness, Herbert Pennock. Brewer claims that the State failed to fully disclose the extent of the deal and thereby violated Brewer’s due process right to exculpatory evidence under
Brady v. Maryland,
Several requirements attend any
Brady
challenge. First, the prosecution must have withheld evidence from the defendant; second, the evidence must be favorable; and third, the evidence must be “material,” that is, “such that there is a reasonable probability its disclosure would have changed the outcome.”
State v. Schatz,
The exculpatory evidence claimed to have been suppressed is a BCI memorandum — dictated posttrial — that verifies the details of Pennock’s “deal” as follows: Subject arrested and charged with following felonies:
1. Suffering a Life Prisoner to escape.
2. Perjury.
3. Illegal possession of a firearm by a felon.
Subject given immunity by the prosecution and all these charges dismissed on condition that subject testify against Ronald Wayne Brewer in Homicide charge.
Brewer concedes the trial testimony established that Pennock had certain State charges against him dismissed, and that he had received immunity. Brewer claims, however, that the State never divulged the quid pro quo evident in the BCI memo; that is, that the immunity was specifically given in exchange for Pennock’s testimony against Brewer.
Brewer contends that if the defense could have established this quid pro quo for the jury, it would have seriously damaged Pennock’s credibility. He points out that the consequences for refusing to testify after a deal conditional on giving testimony would include refiling of charges; for simple immunity and dismissal of charges, the maximum consequence would be a thirty-day jail sentence for contempt. Thus Brewer claims the deal gave Pennock a large incentive to testify against Brewer as he did, and that the defense and jury should have been given this information in order to accurately assess Pennock’s credibility.
There may be merit in the fine line Brewer has drawn between what he knew in advance of trial and what was later revealed by the State’s memo. But we think he is relying on a distinction without a material difference in this case.
As noted by the State, the record is replete with evidence that the defense had a *83 good understanding of the scope of Pen-nock’s deal and made good use of it at trial. The transcript of pretrial proceedings quotes Brewer’s counsel as being aware that Pennock had “been granted immunity in return for his testimony against Mr. Brewer.” Counsel used that knowledge in his opening statement:
So what did [the State] do? They said, well, Mr. Pennock, that’s simple enough, we will assure you that anything you say won’t matter any because you are not ever going to be charged. That’s what they have done. They have made a plea bargain that is second to none probably in this State.
As a preface to his own testimony, Pen-nock told the jury he was testifying under an order granting him immunity from a charge of perjury and suffering a life prisoner to escape. The defense pursued Pen-nock’s understanding of the deal at length on cross-examination. The State, in its closing argument, conceded that Pennock was “probably not a very nice guy” and had testified only because of the grant of immunity. The defense then followed with the argument that Pennock was only now “telling the truth” because the State had “virtually put [Pennock] beyond the clutches of the law” and
last, but far from least, he got the ultimate governmental immunity for everything he said here, governmental immunity for all this factual situation, a deal bought, paid for and delivered to the State not for money, but for the more valuable coin, a whitewash of his crimes and those of his family forever.
We are at a loss to see how defense counsel could have made better use of this evidence as a tool to impeach the State’s chief witness had the “deal” set out in the BCI memo been reduced to writing and revealed before trial. Even assuming, for the sake of argument, that some nuance of the deal was suppressed by the State, no due process violation occurs unless the suppressed evidence is material to defendant’s guilt.
Brady,
III.
Ineffective Assistance of Counsel.
The rules guiding our review of Brewer’s ineffectiveness claims are well established. Fundamentally, Brewer must show that counsel “failed to perform an essential duty,” and that “prejudice resulted therefrom.”
State v. Miles,
As for proof of prejudice, Brewer must show that counsel’s failure worked to his substantial and actual disadvantage, to the end that
there is a reasonable probability that, but for counsel’s unprofessional errors, the result of the proceeding would have been different. A reasonable probability is a probability sufficient to undermine confidence in the outcome.
Strickland v. Washington,
*84 Brewer raised four claims of ineffective assistance of counsel before the postconviction trial court. All were rejected by the court. Only two merit our brief consideration here: (1) counsel’s failure to preserve error on the prosecutor’s alleged comment on Brewer’s silence; and (2) counsel’s failure to request an accomplice instruction. AVe consider the arguments in turn.
A.
Prosecutor’s remarks.
As a general rule, a prosecutor’s comment on the defendant’s failure to testify violates a defendant’s due process rights.
Anderson v. Nelson,
At trial, Brewer stood on his right to remain silent. His counsel asked the court to instruct the jury regarding his right to do so free from adverse inference. The prosecutor then made the following statement in closing argument:
You will be instructed that not only is the Defendant presumed to be innocent, he also has his constitutional right not to testify, and you cannot take that to mean anything. You can’t hold that against him. That’s the law and— ... — that’s the instruction.
On rebuttal, the prosecutor added:
You know, I don’t like Mr. Pennock, I don’t like anything about it, but at least he testified as to what the facts and circumstances were. He testified and you had an opportunity to hear him testify-
Brewer claims that these statements, in combination with the prosecutor’s repeated suggestion that only the defendant knew what really happened, amounts to unlawful comment on Brewer’s right to remain silent. He claims his counsel’s failure to object or move for mistrial on this ground amounted to ineffective assistance of counsel.
See Brewer,
The prosecutor’s first comment was no more than an affirmative statement of the law that would shortly be repeated by the trial court. No unfairness meriting objection appears.
The rebuttal statements, though troublesome when taken out of context, strike us as invited and fair comment in light of the double-barreled thrust of defense counsel’s argument: the alleged failure by the State to prove essential facts and the assault on Pennock’s credibility.
In
State v. Bishop,
we found no due process violation where a prosecutor made comparable remarks in response to defendant’s attack upon a void in the State’s evidence.
Bishop,
B. Accomplice instruction. As noted earlier in this opinion, the State’s case — conveyed through the testimony of Herbert Pennock — established that Pen-nock purchased the murder weapon, gave it to Brewer, drove Brewer to the Edwards’ residence, and later drove Brewer to Du-buque to facilitate his escape. Brewer’s defense rested on the alibi that he was already in Dubuque by the time someone *85 (such as Pennock) shot and killed the Edwards.
Given these two scenarios, Brewer contends his counsel were ineffective for having refused to request an accomplice instruction. Had they done so, the jurors would have been instructed that they could not convict Brewer based on Pennock’s testimony alone. Because he views the remaining corroborative evidence as very weak, Brewer claims a reasonable probability that the outcome of the trial would have been different had the accomplice instruction been given.
Preliminarily, we are unable to agree with Brewer’s assessment of the corroborating evidence. Without further lengthening this opinion by detailing that evidence here, the record reveals numerous pieces of persuasive physical and circumstantial evidence corroborating Pennock’s version of the evening’s events. The evidence placed Brewer at or near the crime scene when shots were heard; other witnesses observed a man resembling Brewer running from the scene with a rifle at his side shortly thereafter. Contrary to Brewer’s assertion, we find the corroborative evidence strong, not minimal.
More importantly, as revealed by Brewer’s trial counsel at his postconviction hearing, their election not to pursue an accomplice theory was a matter of deliberate trial strategy. They testified that no accomplice instruction was requested because they thought it would seriously weaken their best theory of defense, alibi. As one of these experienced trial counsel opined, a jury was unlikely to believe a theory of defense that attempted to “ride two horses.”
Counsel need not urge the giving of every possible instruction to display competency, even where an instruction would otherwise be available.
Wycoff v. State,
Here, counsel’s failure to request an accomplice instruction was calculated to effectuate a reasonable trial strategy. That strategy was to avoid the duplicitous argument that defendant was not there, but if he was, he had an accomplice. Even though this strategy was ultimately unsuccessful, we cannot say that counsel’s decision breached an essential duty that in any way prejudiced the defendant. The court correctly rejected this claim of ineffective assistance.
For all of the foregoing reasons, we affirm the trial court’s dismissal of Brewer’s postconviction action on its merits.
AFFIRMED.
