The district court 1 granted in part and denied in part the government’s motion to compel the production of documents and an attorney’s testimony before a federal grand jury. The government appeals that portion of the district court’s order denying its motion to compel. The client cross-appeals, contesting the order insofar as it granted the motion. We affirm.
I.
In light of the need to observe the requirements of grand jury secrecy, we will provide only a basic recitation of the facts. In the course of earlier, unrelated proceedings, the client was the target of an investigation into whether he had received improper payments. The client received the assistance of the attorney in responding to these accusations and provided the attorney with an alternate, non-criminal explanation for his conduct. The attorney relied upon this explanation in formulating his legal advice and drafted documents that memorialized what the client said had taken place. The government contends that the client knowingly lied to the attorney by providing the attorney with a false back-story for the monies the client had allegedly improperly received.
In November 2005, a federal grand jury issued subpoenas to the client’s attorney and the attorney’s law firm, seeking documents as well as the attorney’s testimony. In response to the subpoena, the law firm produced a privilege log, identifying 1,604 documents that it claims are protected under the attorney-client or work product privileges. The attorney declined to answer the grand jury’s questions, citing attorney-client privilege. In June 2006, the grand jury indicted the client and another party.
The government moved to compel the production of the documents and the attorney’s testimony. The government argued that because the client had used his attor *979 ney’s services to perpetrate a fraud, the attorney-client and attorney work product privileges were vitiated under the crime-fraud exception to these privileges.
The district court reviewed 179 documents in camera, 139 of which the government had asked the court to examine. Following a hearing and briefing by the parties, the district court concluded that, under the crime-fraud exception, the client could not assert the attorney-client or work product privileges because the government had presented a prima facie case that the client had used his attorney’s counsel in furtherance of a fraud. The court also concluded that because there was no evidence that the attorney had known of the client’s fraud, the crime-fraud rule did not preclude the attorney from asserting his own work product privilege. The district court ordered the disclosure of thirty-six documents that it determined had been generated in furtherance of the fraud, but permitted the attorney to assert his work product privilege as to any opinion work, product that might be contained therein. The district court determined that the rest of the documents it had reviewed were not discoverable under the crime-fraud exception because they were not generated in furtherance of any fraud. 2 The district court also permitted the attorney to decline to answer the grand jury’s questions, except for questions relating to the origins of documents. The government contests the redactions and the restrictions on the attorney’s grand jury testimony. The client appeals that portion of the district court’s order requiring the production of the thirty-six documents and the attorney’s limited testimony.
II.
A. Issues Pertaining Primarily to the Government’s Appeal
Attorney-client communications and attorney work product are privileged and are not ordinarily discoverable—even by the grand jury.
See In re Grand Jury Subpoenas Duces Tecum,
The work product privilege is “distinct from and broader than the attorney-client privilege.”
In re Murphy,
Other circuits have concluded that a client who has used an attorney’s assistance in furtherance of a fraud may not assert the work product privilege.
See, e.g., In re Special September 1978 Grand Jury (II),
An attorney’s independent assertion of his work product privilege, on the other hand, stands on a very different footing because the attorney’s privilege is based on the attorney’s interest in protecting his opinions and thought processes from disclosure. This is a protection that benefits all of the attorney’s clients because it accords the attorney a measure of privacy within which he can candidly compose his thoughts.
To determine the proper scope of an attorney’s work product privilege when the client has committed a crime or a fraud, it is necessary first to distinguish between two kinds of work product: ordinary work product, which includes “raw factual information,” and opinion work product, which encompasses “counsel’s mental impressions, conclusions, opinions or legal theories.”
Baker v. General Motors Corp. (In re GMC),
Other circuits recognizing the ordinary/opinion work product distinction have concluded that an attorney may assert the work product privilege with regard to opinion work product even if the client has used the attorney’s services to commit a crime or perpetrate a fraud, so long as the attorney was unaware that the client was doing so.
In re Grand Jury Proceedings
#
5,
The government contends that even if the district court correctly held that the attorney’s opinion work product was shielded from disclosure, the district court did not properly draw the fine between ordinary and opinion fact work product. In particular, the government disagrees with the district court’s determination that the attorney’s notes and his recollections about conversations he may have had with the client were protectable as opinion work product. We discern no error in the district court’s division between opinion and fact work product.
“Notes and memoranda of an attorney, or an attorney’s agent, from a witness interview are opinion work product
*982
entitled to almost absolute immunity.”
Baker,
B. Issues Pertaining Primarily to the Client’s Cross-Appeal 5
The client takes issue with the standard the district court used to determine that the thirty-six documents were generated in furtherance of a crime or fraud. The district court held that the crime-fraud standard was met because the government’s evidence, if it were believed by the trier of fact, would establish the existence of a crime or fraud. The district court also determined that it would have found that the crime-fraud exception applied even if it had used a probable cause standard, as the client had suggested. The client argues on appeal that otherwise privileged documents should be discoverable under the crime-fraud exception only if the district court finds “by clear and convincing evidence” that the documents were generated in furtherance of a crime or fraud. The client also contends that a district court should take into account evidence countervailing the application of the crime-fraud exception. 6
With respect to the quantum of proof, before the crime-fraud exception may be applied, the moving party must “make a prima facie showing that the legal advice has been obtained in furtherance of an illegal or fraudulent activity.”
United States v. Horvath,
In considering the disparate formulations regarding the level of prpof necessary to justify the application of the crime-fraud exception, we look to Supreme Court precedent. In
United States v. Zolin,
the Court considered,
inter alia,
the level of proof necessary to justify a district court’s ordering the production of documents for the purpose of an
in camera
review to determine whether the crime-fraud exception applied. The Court ruled that a district court may not order the production of documents for
in camera
review unless the party . urging production has made the threshold showing “of a factual basis adequate to support a good faith belief by a reasonable person’ that the crime-fraud exception applies.”
Id.,
at 572,
We reject the client’s suggestion that fraud must be proved by clear and convincing evidence. Apart from the fact that it is not harmonious with the standards articulated by our sister circuits,
7
the standard is too exacting for proceedings at the grand jury stage. The Supreme Court has cautioned that any rule that “would saddle a grand jury with mini-trials and preliminary showings would as
*984
suredly impede its investigation and frustrate the public’s interest in the fair and expeditious administration of the criminal laws.”
United States v. Dionisio,
We turn next to the related question whether, in the grand jury context, the district court may be or is required to consider evidence presented in opposition to the application of the crime-fraud exception. We have suggested that in a civil case the party opposing the application of the crime-fraud exception is entitled to present countervailing evidence.
In re General Motors Corp.,
The “rules of the game” may be different in the grand jury context, however.
In re Grand Jury Subpoena,
We need not decide today whether the district court may or should consider contrary evidence. Even if the district court could have (or should have) accorded the *985 countervailing evidence some measure of consideration, we do not believe that consideration of the contrary evidence in this case would have properly affected the district court’s crime-fraud determination. The chent’s rebuttal evidence appears to consist primarily of statements by the client and others that essentially convey the client’s innocent explanations for his conduct. The assessment of credibility will typically be better left to the fact-finder, which may, in this case, later credit the client’s explanations. Nor should the district court’s crime-fraud inquiry devolve into a mini-trial, with the district court engaging in a finely calibrated weighing of the evidence. Accordingly, even if it had been proper for the district court to accord the contrary evidence some measure of consideration (again, a matter we do not decide today), we do not believe that such consideration would extend to rejecting an otherwise sound prima facie case merely because the district court is more persuaded by the client’s explanations. 8
The client also argues that the crime-fraud exception is inapplicable because he had simply consulted his attorney in good faith about the legal implications of prior conduct. This argument fails. We review the district court’s crime-fraud ruling for an abuse of discretion.
In re Grand Jury Subpoenas Duces Tecum,
The client also suggests that he did not solicit his attorney’s assistance in committing a fraud and never suggested that any particular course of action be undertaken, but merely acquiesced in counsel’s advice. As the government points out, however, it cannot be expected that a client seeking to enlist an attorney’s (unknowing) aid in perpetrating a fraud will provide his attorney with precise legal directions for carry
*986
ing it out. After all, the client is relying on the attorney’s expertise. In this case, there is evidence that the client, in the face of allegations of wrongdoing, relayed to his attorney a false explanation for his conduct and that his attorney relied upon this false explanation in,
inter alia,
executing a legal response to the accusations. In other words, even if the client did not necessarily have any precise legal response in mind, the evidence indicates that he knowingly took advantage of his attorney’s expertise in aid of his endeavor to mislead others with a false cover-story regarding his conduct.
See In re Richard Roe, Inc.,
The client contends, finally, that the subpoena should have been quashed in its entirety because the government is using the grand jury subpoena as a way of obtaining pre-trial discovery against him. The government may not use the grand jury’s investigative powers “for the sole or dominant purpose of preparing a pending indictment for trial.”
United States v. Puckett,
The judgement is affirmed.
Notes
. The Honorable James M. Rosenbaum, Chief Judge, United States District Court for the District of Minnesota.
. The government suggests in its opening brief that the district court shielded these documents from discovery not because they were not generated in furtherance of a fraud, but because the court had determined that all of the documents it had reviewed were opinion work product. The government’s characterization of the district court’s order is mistaken. The district court would not have permitted the discovery of the thirty-six documents had it considered all 179 documents to be opinion work product.
. The government suggests that some circuits have held that an attorney's work product privilege may be vitiated by client fraud even if the attorney was not aware of the client's wrongdoing. In most of the cases cited by the government for this proposition, however, it appears that the clients were the parties on appeal—not the attorneys.
See In re Richard Roe, Inc.,
. The government also suggests in its responsive brief that because the district court erred in drawing the line between opinion and fact work product, it may have erred in its determination that the majority of the documents it had reviewed were not generated in furtherance of the fraud. We disagree.
. The government argues that the client's appeal was rendered moot because the client produced the documents and did not take advantage of the district court’s offer to stay compliance with its order pending appeal. We disagree. First, the appeal is not moot because the courts can still offer some "effectual relief” by ordering the return or destruction of the documents.
Church of Scientology
v.
United States,
.Because the district court articulated an "evidence if believed by a trier of fact” standard, we will assume that contrary evidence did not factor into the final decision. It is clear, however, that the district court did consider each party’s legal arguments.
. The client contends that the “Tenth Circuit has indicated its agreement with a 'substantial and competent evidence’ standard,” citing
Intervenor v. United States (In re Grand Jury Subpoenas),
. We leave open the possibility that, in some circumstances, weighing contrary evidence or rejecting the government’s evidence could be warranted. There may be cases, for example, where the government’s evidence appears so facially unreliable (or the countervailing evidence so compelling) that a more critical gaze, perhaps informed by contrary evidence, may be appropriate. The client suggests, for example, that it would not be appropriate to assume that the government's evidence is true if that evidence consists of “testimony of a demonstrably incompetent, confused, or biased witness.” That may well be true, but we need not reach that conclusion today because the government’s evidence does not suffer from such deficiencies.
. The client cites
In re BankAmerica Corp. Secs. Litig.,
