Hubert Michaud appeals from the district court’s denial of his petition for writ of error
coram nobis.
Michaud seeks a judgment of acquittal, or, alternatively, a new trial. Michaud was convicted on tax evasion charges for the years 1980 and 1981 under 26 U.S.C. § 7201 (1982). This is his third appeal to this court in this case. On Michaud’s direct appeal alleging governmental misconduct and insufficiency of the evidence, we affirmed the conviction.
United States v. Michaud,
We observe initially that the district court dismissed Michaud’s petition without an evidentiary hearing. While Michaud does not request us to remand for such a hearing, this appeal implicitly raises the question whether there should have been a hearing at which the facts surrounding Michaud’s allegations would be further developed. We think not. On motion for post-judgment relief,
[c]onclusory allegations unsupported by specifics are insufficient to require a court to grant an evidentiary hearing, “‘as are contentions that in the face of the record are wholly incredible....’” Phillips v. Murphy,796 F.2d 1303 , 1304 (10th Cir.1986) (quoting Blackledge v. Allison,431 U.S. 63 , 74 [97 S.Ct. 1621 , 1629,52 L.Ed.2d 136 ] (1977));
Hopkinson v. Shillinger,
I.
Collateral attack on a judgment by common law writ of error
coram nobis,
preserved by the All Writs Act, 28 U.S.C. § 1651(a), is limited to “those cases where the errors were of the most fundamental character, that is, such as rendered the proceeding itself irregular and invalid.”
United States v. Addonizio,
The facts of this case are fully set forth in our opinion on direct appeal, and we restate them only insofar as is necessary to address the issues raised in this petition for writ of error coram nobis. Michaud was convicted of tax evasion for taking deductions for bogus charitable contributions made to the Life Science Church (“LSC”), which is not a charitable organization qualified for tax exempt status under 26 U.S.C. § 501(c)(3), but, rather, was organized sim *40 ply to offer a mechanism to reduce personal income taxes.
Michaud’s arguments in this appeal, as in his direct appeal, rest principally on allegations of misconduct by Internal Revenue Service (“IRS”) Agent Darby Levy, who was assigned to audit Michaud’s 1979 tax return.
Michaud,
We rejected Michaud's contentions in this regard on direct appeal. We concluded:
first,
that the facts doubtfully constituted a violation of IRS regulations, which confer discretionary authority to decide when a suspicion of fraud is “firm,”
Michaud,
In this appeal, Michaud suggests instances of IRS violations of IRM regulations in addition to those he earlier raised. These include purported violation of regulations requiring that the Criminal Investigation Division specify the need for assistance from Civil Revenue Agent Levy on specific forms, 6 IRM § 9322.2(1) (CCH), and violation of regulations requiring that the Criminal Investigation Division accept a fraud referral from the Civil Audit Division within 20 working days, 2 IRM (Audit) § 4565.23 (CCH). Michaud also contends that two witnesses — his business associates Mayer Friedberg and Anthony Induisi— committed perjury as government witnesses. Further, he again raises the issue, addressed on direct appeal, of improper cross-examination of his defense expert.
See Michaud,
II.
Tied in with the above allegations, Mi-chaud makes three arguments on appeal. First, he argues that Attorney Rodio’s association with the IRS so affected the adequacy of his representation of Michaud as to deprive Michaud of his Sixth Amendment right to effective assistance of counsel. In
Cuyler v. Sullivan,
Second, Michaud argues that Attorney Rodio’s representation amounted to ineffective assistance of counsel which prejudiced his defense. Michaud emphasizes Rodio’s failure at trial to probe Agent Levy’s com
*41
pliance with IRS regulations, failure to object to admission of evidence obtained allegedly in violation of IRS regulations, and failure adequately to cross-examine witnesses Induisi and Friedberg to expose their alleged perjury. To establish ineffective assistance of counsel, Michaud must prove that Rodio’s deficient performance prejudiced his defense to the point that there is a reasonable probability that the deficiency was outcome determinative.
Strickland v. Washington,
Third, Michaud claims that but for prose-cutorial misconduct, he would not have been convicted. Michaud alleges: (1) the government improperly suppressed evidence of Agent Levy’s violation of IRS regulations; 3 (2) the government improperly introduced evidence obtained in violation of Michaud’s constitutional rights because IRS regulations were violated in obtaining the evidence; and (3) the government improperly questioned witness O’Brien about a past criminal investigation.
A fundamental problem with Michaud’s above arguments is that they are predicated on factual and legal allegations that either were disposed of on direct appeal,
Michaud,
A. Conflict of Interest
Michaud’s characterization of a conflict of interest on the part of Attorney Rodio is insufficiently specific. Michaud alleges in his brief that Rodio taught classes to IRS auditors regarding signs of criminal activity. In his brief to the district court, Michaud states that Rodio informed him after trial that the IRS advised Rodio that investigation of an IRS agent was inconsistent with Rodio’s contractual obli *42 gation to the IRS, and that he should therefore refrain from investigating the conduct of Agent Levy. Michaud does not specify when, in what capacity or to what extent Rodio was teaching IRS auditors. 4 He fails to specify what duty to the IRS Rodio owed that was in actual conflict with his representation of Michaud. 5 See Brien, supra. Michaud merely submits that Ro-dio unjustifiably declined to investigate Agent Levy's conduct prior to trial or demand production of documents related thereto, and that these deficiencies result from Rodio's conflict of interest. Mi-chaud's allegations, even taken as true, do not suffice to establish a violation of the Sixth Amendment, particularly given Mi-chaud's representation by other counsel. See note 2, supra.
B. Violation of IRS Regulations
Miehaud's allegations that Agent Levy violated IRS regulations underlies his conflict of interest, ineffective assistance, and prosecutorial misconduct claims. Michaud claims that Rodio's failure to investigate these violations prior to and during the trial evidences Rodio's conflict of interest and constituted ineffective assistance. Mi-chaud also asserts that the prosecution's use of evidence allegedly obtained in violation of IRS regulations constituted misconduct. However, because these allegations are either entirely speculative or have been addressed on direct appeal, they cannot support Michaud's claims.
Claims based on violations of IRS rules and regulations include the following: (1) Attorney Rodio improperly failed to object to introduction of evidence obtained after Agent Levy allegedly had received a firm indication of fraud and the prosecution improperly introduced such evidence; (2) Attorney Rodio failed to adequately cross-examine Agent Levy at trial to expose the inconsistency in her testimony that the case's status was civil on October 27, 1983, while her activity record of September 3, 1982 allegedly suggested a firm indication of fraud; 6 (3) the prosecution acted improperly in failing to disclose until late in the trial Agent Levy's activity record and the Fraud Referral Form 2797, 6 IRM Exhibit 9320-1 (CCH), both of which allegedly support the alleged violations of IRS regulations.
IRM § 9322.2(1) requires that the Criminal Investigation Division notify the appropriate IRS Division Chief whether the fraud referral has been declined before investigation, after noting on the copy of the Form 2797 whether a cooperation civil reve-flue agent should be assigned. Michaud emphasizes that the copy of Levy's Form 2797 provided at trial carries no such notation. Michaud faults Rodio for failing to request Form 3212, presumes that Levy continued her investigation without such proper assignment request, and concludes that this alleged violation should have resulted in the dismissal of the indictment. We need only point out that Michaud incorrectly concludes that non-compliance, if proved, would require dismissal of the indictment. Though this specific IRM violation was not addressed on direct appeal, the holding there-that violations of IRS fraud referral rules and regulations do not constitute a violation of constitutional rights and therefore do not prevent Mi-chaud's prosecution or conviction nor require suppression of evidence-is directly applicable. Michaud,
As for Michaud’s allegation that, after finding fraud, Agent Levy improperly continued to investigate him under the guise of a civil investigation, this contention was explicitly addressed and rejected on direct appeal.
Michaud,
C. Government Witnesses’ Perjury
Michaud also argues Rodio deficiently failed to expose perjury on the part of government witnesses Induisi and Fried-berg. These witnesses indicated that Mi-chaud had reason to know his LSC deductions were not legitimate. Friedberg testified to telling Michaud that the Life Science Church was a “scam” and to Mi-chaud’s having joked about the scheme. Induisi testified to telling Michaud that the IRS was auditing Induisi as a result of the latter’s LSC deduction.
Michaud asserts that Induisi’s testimony that he told Michaud of the audit was a fabrication. He submits that Induisi purposely held back information of the LSC deduction’s invalidity because he wanted Michaud to be investigated in order to divert attention from Induisi’s embezzlement from Michaud. Michaud had himself testified at trial that Induisi did not tell him of an audit of Induisi’s LSC deduction and did not tell him that the LSC deduction might be inappropriate. However, Michaud proffers no specifics as to Induisi’s alleged embezzlement nor does Michaud refer to any new evidence to substantiate his claim of perjury or to establish that Attorney Rodio’s performance was deficient in failing to attack Induisi’s credibility on this basis.
See Strickland,
Michaud asserts that Mayer Friedberg also committed perjury by stating that the courts had resolved in his favor a lawsuit Michaud brought against him regarding Friedberg’s theft of a Michaud company. 7 In his pro se memorandum to the district court Michaud states that his appeal in his suit against Friedberg was dismissed for lack of jurisdiction due to a belated notice of appeal, rather than on the merits. Even accepting Michaud’s version of the lawsuit’s resolution as accurate, it is doubtful if Friedberg’s description reached the level of perjury. In addition, proof of the statement’s inaccuracy related solely to Friedberg’s credibility; it did not go to direct proof of Michaud’s guilt. Attorney Dimitri highlighted on cross-examination of Friedberg the latter’s unfriendly relationship with Michaud. The mere failure to have attacked Friedberg’s credibility on the submitted additional ground would not have rendered Michaud’s representation below an objective standard of reasonableness. See Strickland, supra. 8
D. Improper Prosecutorial Cross-Examination
Michaud argues that the prosecutor acted improperly in cross-examining defense expert John O’Brien regarding the possibility that O’Brien had recently been the subject of a criminal investigation. This issue was raised and rejected on direct appeal and is no longer open.
Michaud,
*44 We conclude that Michaud has not demonstrated fundamental error warranting issuance of a writ of error coram nobis, and that the district court properly denied the petition without a hearing. Most of Mi-chaud’s allegations in support of his conflict of interest, ineffective assistance and prosecutorial misconduct claims were addressed on direct appeal. The remainder are insufficient to raise issues that might warrant coram nobis relief.
Affirmed.
Notes
. The
Morgan
Court specifically identified continuing results of a conviction, such as heavier penalties for future convictions and effects on civil rights, as justifying issuance of the writ to correct fundamental error.
Id.
at 512,
. Michaud's conflict of interest and general ineffective assistance arguments are weakened by the fact that he was represented not only by Rodio but by two other defense attorneys. Mi-chaud explains that Lorraine Hansen was hired only as New Hampshire local counsel and William Dimitri, Jr. was hired as a trial litigator in late 1987, after indictment. Michaud asserts he hired Rodio, a tax expert, as lead counsel. Nonetheless, while Rodio examined one defense witness (O’Brien) and participated in a motion to dismiss the indictment following the government’s case, Dimitri examined all other witnesses, delivered the opening and closing arguments, and made objections at trial. Michaud does not allege that Rodio’s purported conflict of interest infected Dimitri. Consequently, it is unclear that Rodio's purported inadequacies could have had a determining adverse effect on Michaud’s defense.
See Dziurgot,
. To establish that the government wrongfully suppressed evidence, Michaud must prove a reasonable probability that disclosure of the suppressed evidence would have altered the outcome.
Brady v. Maryland,
. Michaud states in his reply brief to .this court that Rodio's relationship with the IRS was "ongoing." However, we cannot recognize this statement as creating an issue of fact. See Transurface Carriers, supra.
. Michaud asserts that Rodio told him the IRS requested that Rodio discontinue the Michaud representation, and submits that the IRS audited Rodio's tax returns in retaliation for Rodio's failure to discontinue the representation. These allegations, without further support, fail to demonstrate what obligations to the IRS were jeopardized by Rodio's Michaud representation.
. As previously noted, Agent Levy was actually cross-examined on Michaud's behalf by Attorney Dimitri, not by Rodio.
. Friedberg’s testimony was as follows:
Mr. Michaud had brought suit against me when I had left his employment. We had gone to the lower courts and they found for us and then he had taken the case to the Supreme Court, and they had found for us at that time.
. Michaud raises in his reply brief additional instances of alleged perjury, including alleged perjury on the part of Agent Levy relating to testimony about the time at which she received Michaud’s records. We do not reach the merits of this or any of the number of other claims which Michaud raises for the first time in his reply brief. Arguments relating to issues not raised in an opening brief are waived.
United States v. Benavente Gomez,
