The defendants, John Hamilton and Robert Miller, were convicted of aggravated bank robbery in violation of 18 U.S.C. § 2113(a) & (d). The district court sentenced them to 190-month and 158-month prison terms, respectively, and ordered them to pay $25,035 in restitution. The defendants now appeal. For the reasons that follow, we affirm.
I
BACKGROUND
On the morning of March 12, 1992, the defendants broke into the back door of a bank in rural Burnett County, Wisconsin. They ordered, at gunpoint, the two tellers to open the vault and to lie down on the floor. The robbers then proceeded to make off with over $22,000. Shortly thereafter, Mr. Hamilton and his wife, Monica Hamilton, and Mr. Miller and Jennifer Miller 1 fled by automo *352 bile to Arizona. They engaged in a spending spree along the way. The defendants were eventually arrested in Arizona on May 6, 1992.
At the time of this arrest, Messrs. Hamilton and Miller were not taken into federal custody. They were arrested on outstanding warrants for violating their probation in Minnesota and Nevada, respectively. While Mr. Hamilton was an inmate in a Minnesota state prison, he confided to fellow inmate William Albee that he had been involved in the Burnett County bank robbery. Albee then informed the FBI. As a result, Mr. Hamilton and Mr. Miller were indicted on September 10, 1992 for bank robbery in violation of 18 U.S.C. § 2113(a), and for carrying a firearm during a violent crime in violation of 18 U.S.C. § 924(e). A superseding indictment was returned on December 2, 1992 charging the defendants with one count of aggravated bank robbery under 18 U.S.C. § 2113(a) & (d).
While awaiting trial on the federal charge, Mr. Hamilton once again befriended a fellow inmate. Failing to learn from his first mistake, Mr. Hamilton told the inmate, Alan Wildman, all the details of how he and Mr. Miller had robbed the Burnett County bank. He also disclosed his intention to murder an FBI agent and his family when he was released from prison. This time, however, Mr. Hamilton had more than just his story to tell; he had discovery materials in his prison cell that his attorney had left with him to peruse. Mr. Hamilton showed Wildman the discovery materials, and the two men began to formulate and discuss trial strategies, including plans to fabricate perjured testimony and evidence. However, Wildman decided to offer the government his testimony concerning the activities of Mr. Hamilton and Mr. Miller because he feared that Mr. Hamilton was actually going to carry out his planned murder of the FBI agent.
On February 12, 1993, the district court held a pretrial evidentiary hearing on the admissibility of the testimony of Albee and Wildman concerning Mr. Hamilton’s extrajudicial statements, and on Mr. Miller’s motion for severance of the defendants’ trials. The district court held that Wildman was not acting as a government agent when Mr. Hamilton disclosed the information about which Wildman was to testify, and that, because Mr. Hamilton voluntarily disclosed the information, he had waived any attorney-client privilege he had concerning the information. The government was therefore not prohibited from using the information either before or at trial. The district court also held that using Mr. Hamilton’s extrajudicial statements against Mr. Miller presented no Confrontation Clause problem because those statements were admissible against Mr. Miller under Federal Rule of Evidence 804(b)(3).
On March 3, 1993, after a six-day trial in which neither defendant took the stand, a jury found both defendants guilty. On May 4, 1993, Mr. Hamilton was sentenced to a 190-month prison term; Mr. Miller was sentenced to a 158-month term. The district court ordered the defendants to pay the bank $25,035 in restitution.
II
DISCUSSION
On appeal, Mr. Hamilton makes only one argument: that the government’s use of his trial strategy, as discovered through Mr. Hamilton’s cellmate, Alan Wildman, denied Mr. Hamilton his Sixth Amendment right to effective assistance of counsel. Mr. Miller raises four additional arguments. 2 First, he submits that the privilege covering marital communications was violated by admitting portions of Jennifer Miller’s testimony. Second, Mr. Miller contends that his Sixth Amendment right of confrontation was violat *353 ed when the extrajudicial statements of his codefendant, Mr. Hamilton, were admitted against him at trial. Third, and relatedly, Mr. Miller argues that the district court abused its discretion in not severing his trial. Finally, Mr. Miller asserts that the district court’s finding that Mr. Miller could have reasonably foreseen that Mr. Hamilton had a firearm during the bank robbery is clearly erroneous. We now examine each defendant’s contentions.
A. John Hamilton
Mr. Hamilton contends that Alan Wild-man’s disclosure of and testimony about the trial tactics he discussed with Wildman in their prison cell, which included information relating to discovery material, violated his Sixth Amendment right to effective assistance of counsel. He argues that, to guarantee that right and to maintain the adversarial character of the criminal justice system, we must ban all forms of prosecutorial access to defense strategy and tactics. Mr. Hamilton does not contend on appeal that Alan Wild-man was in any way a government agent. Rather, he urges us to adopt a prophylactic rule that would prohibit the government from using or introducing at trial any sensitive defensive plans it learned about in any way.
Mr. Hamilton attempts to ground his proposed rule in
Weatherford v. Bursey,
We cannot accept Mr. Hamilton’s argument. To the extent that he bases his argument on the attorney-client privilege, he has made no effort whatsoever to show that the information used allegedly in violation of the Sixth Amendment was privileged attorney-client information.
See United States v. White,
*354 B. Robert Miller
1.
Mr. Miller’s first contention is that the district court erred in not excluding certain portions of Jennifer Miller’s testimony that he claims fell within the marital communications privilege. Shortly after returning home from the bank robbery, Mr. Miller informed Jennifer Miller that he and Mr. Hamilton had just robbed a bank. Mr. Miller claims that, at the time, he thought Jennifer Miller to be his lawful spouse. The district court allowed Jennifer Miller to testify about Mr. Miller’s statement over Mr. Miller’s objection because Mr. Miller failed to present evidence demonstrating that a valid marriage existed between the two. The district court had requested the offer of proof in a pretrial order because questions arose concerning whether Jennifer Miller was legally divorced from her first husband at the time she married Mr. Miller in Nevada. Mr. Miller now asserts that the district court abused its discretion in admitting this damaging testimony because the government never proved that the marriage did not exist, and because, in any event, Mr. Miller made the communications at issue in reliance on his good faith belief that he and Jennifer Miller were validly married. We review the district court’s ruling under the abuse of discretion standard.
See Lofton,
Mr. Miller’s arguments are misplaced. The party asserting an evidentiary privilege, such as the marital communications privilege, bears the burden of establishing all the essential elements involved.
White,
Mr. Miller argues in the alternative that, even if Mr. Miller and Jennifer Miller were not validly married, the district court should have excluded the confidential communications because Mr. Miller made them to Jennifer Miller in reliance on his belief that they were validly married. We need not address this argument at length. Our cases make clear that we “interpret[ ] strictly the ‘valid marriage’ requirement in the testimonial privilege context.”
Id.
(citing
United States v. Clark,
2.
Mr. Miller next asserts a Sixth Amendment Confrontation Clause violation. He claims that the district court erred by admitting the extrajudicial statements of his code-fendant, Mr. Hamilton, against him at trial. He asserts as an absolute proposition that
*355
“where two defendants are tried jointly, the pre-trial confession of one cannot be admitted against the other unless the confessing defendant takes the stand.” Appellant Miller’s Br. at 6. He submits that the district court erred in concluding that incriminating statements made by Mr. Hamilton were admissible against him under Federal Rule of Evidence 804(b)(3), which excepts statements made against the declarant’s interest from the general prohibition against hearsay.
4
As a result, Mr. Miller asserts, the admission of Mr. Hamilton’s extrajudicial statements in his trial violated his right of cross-examination under the Confrontation Clause as set forth in
Bruton v. United States,
Mr. Miller’s argument displays a misperception, albeit a common one, of the Supreme Court’s holding in Bruton.
5
Bruton
concerned a declarant-codefendant’s confession that was admitted only against the declarant at the joint trial of the declarant and his codefendant Bruton.
Id.
at 124-25,
We emphasize that the hearsay statement inculpating petitioner was clearly inadmissible against him under traditional rules of evidence.... There is not before us, therefore, any recognized exception to the hearsay rule insofar as petitioner is concerned and we intimate no view whatever that such exceptions necessarily raise questions under the Confrontation Clause.
Id.
at 128 n. 3,
In
United States v. York,
So long as the incriminating and inculpato-ry portions of a statement are closely related, if the circumstances surrounding the portion of a declarant’s statement inculpating another are such that the court determines that the inculpatory portion of the statement is just as trustworthy as the portion of the statement directly incriminating the declarant, there is no need to excise or sever the inculpatory portion of the statement. Mahar’s inculpatory statements were admissible under Rule 804(b)(3) and therefore there was ho confrontation clause violation.
Id.
at 1364. In
United States v. Curry,
In
United States v. Clark,
We note that it is possible that no Bruton problem truly exists in this case. In [York] and [Curry], we held that admitting statements which were admissible as statements against penal interest under Fed. R.Evid. 804(b)(3) did not violate the defendants’ Confrontation Clause rights. It appears that Mr. Clark’s statements to his sister would meet the requirement of Rule 804(b)(3), thus eliminating any Bruton con- *357 eerns; however, the government did not raise this issue.
Id. at 1499 n. 6. Accordingly, we conclude that Bruton affords Mr. Miller no protection if Mr. Hamilton’s extrajudicial statements were admissible under Rule 804(b)(3). 8
We therefore examine whether the statements of Mr. Hamilton were admissible under Rule 804(b)(3). In order to determine the admissibility of hearsay under this Rule, we apply a three-part test: A “ ‘court must find that, (1) the declarant’s statement was against the penal interest of the declarant, (2) corroborating circumstances exist indicating the trustworthiness of the statement, and (3) the declarant was unavailable.’ ”
United States v. Gio,
The first and third parts of our Rule 804(b)(3) test are easily met in this case. First, Mr. Hamilton’s extrajudicial statements were plainly against his penal interest, and Mr. Miller fails to demonstrate otherwise. As in
York,
Whether a statement is in fact against interest must be determined from the circumstances of each ease. Thus a statement admitting guilt and implicating another person, made while in custody, may well be motivated by a desire to curry favor with the authorities and hence fail to qualify as against interest.... On the other hand, the same words spoken under different circumstances, e.g., to an acquaintance, would have no difficulty in qualifying.
With respect to the last part of the Rule 804(b)(3) test, Mr. Hamilton was unavailable because he asserted his Fifth Amendment right not to testify at trial.
The second part of our Rule 804(b)(3) test requires somewhat closer scrutiny. Mr. Miller argues that Mr. Hamilton’s statements are untrustworthy and unreliable because they amount to nothing more than “jailhouse boasting.” Although we are aware that in-culpatory and incriminating statements can sometimes be nothing more than bravado, we do not think the district court abused its discretion in finding Mr. Hamilton’s extrajudicial statements trustworthy. A review of the record reveals that the extrajudicial statements Mr. Hamilton made to Alan Wild-man, including those portions inculpating Mr. Miller, were corroborated by other government witnesses, including Jennifer Miller, whom Wildman has never met. Finally, the incriminating portions of Mr. Hamilton’s extrajudicial statements were closely related to the inculpatory portions.
See York,
3.
Mr. Miller’s next contention is that the district court erred in denying his severance motion. On appeal, Mr. Miller must show that the district court’s decision was an abuse of discretion.
See United States v. Smith,
(1) conflicting and irreconcilable defenses;
(2) a massive and complex amount of evidence that makes it almost impossible for the jury to separate evidence as to each defendant; (3) a codefendant’s statement that incriminates the defendant; and (4) a gross disparity of evidence between the defendants.
Clark,
Mr. Miller bases his argument for severance on the third circumstance set out in Clark — i.e., that codefendant Hamilton’s extrajudicial statements incriminated him. Mr. Miller thus presents as grounds for severance the same Bruton arguments we have already rejected. We need not revisit this issue. Suffice it to say that, because the statements were properly admitted against Mr. Miller under Rule 804(b)(3), they can hardly constitute grounds for asserting that the district court abused its discretion in denying his severance motion, much less that its decision amounted to actual prejudice.
4.
Finally, Mr. Miller submits that the district court erred in increasing his offense level by five levels under U.S.S.G. § 2B3.1(b)(2)(C) when it found that he could have reasonably foreseen that his codefend-ant was carrying a firearm during the robbery. He acknowledges that we review findings of fact in the Guidelines application context only for clear error, and that the preponderance of the evidence standard applies to such factual findings, not the beyond a reasonable doubt standard.
United States v. Duarte,
We do not agree with Mr. Miller’s assessment of the evidence before the district court. First, with respect to whether Mr. Hamilton was bearing a firearm during the robbery, Mr. Hamilton’s cellmate, Alan Wild-man, testified that Mr. Hamilton had told him that he had taken with him to the bank a .357 magnum, which he had stuck into the waistband of his pants. Tr. at 4-90, 4-96. Further, the bank tellers testified that the robbery involved weapons, although they were unable to specify what type of gun each robber had used. Mindful of the fact that a “sentencing judge’s determinations of credibility are entitled to great deference on review,”
id.,
Second, we cannot say that the district court lacked a basis for finding that Mr. Miller could have reasonably foreseen that Mr. Hamilton would carry- a firearm with him in committing the bank robbery.
See id.
at 651 (stating that, in applying the clearly erroneous standard, “we will not reverse a sentencing judge’s factual determination unless it is “without foundation’”) (quoting
United States v. Bias,
Conclusion
For the foregoing reasons, the judgment of the district court is affirmed.
Affirmed.
Notes
. Although Jennifer Miller referred to herself at trial as Mr. Miller's wife, the government contended that the two were not legally married because Jennifer Miller had not been divorced *352 from her prior husband before her marriage to Mr. Miller. As a result, the district court determined that Mr. Miller could not assert a marital communications privilege with respect to certain portions of Jennifer Miller’s testimony. Mr. Miller raises this issue on appeal, and it is discussed below. See infra Part II.B.l.
. Mr. Miller also adopts the Sixth Amendment argument presented in Mr. Hamilton's brief. Assuming arguendo that Mr. Miller has standing to assert Mr. Hamilton's Sixth Amendment claims for himself, we cover this aspect of Mr. Miller's appeal in our discussion concerning Mr. Hamilton.
.
See also United States v. Koen,
. Rule 804 states in relevant part:
(b) Hearsay exceptions. The following are not excluded by the hearsay rule if the declar-ant is unavailable as a witness:
(3) Statement against interest. A statement which was at the time of its making so far contrary to the declarant’s pecuniary or proprietary interest, or so far tended to subject the declarant to civil or criminal liability, or to render invalid a claim by the declarant against another, that a reasonable person in the de-clarant's position would not have made the statement unless believing it to be true....
. See James B. Haddad & Richard G. Agin, A Potential Revolution in Bruton Doctrine: Is Bru-ton Applicable Where Domestic Evidence Rules Prohibit Use of a Codefendant's Confession as Evidence Against a Defendant Although the Confrontation Clause Would Allow Such Use?, 81 J.Crim.L. & Criminology 235, 239 (1990) ("A common misperception is that Bruton interpreted the Confrontation Clause so as to prohibit the use of a codefendant's confession or admission as evidence against a defendant.”).
. Indeed, if the statement had been inadmissible against Curry under the prevailing rules of evidence, the existence of a cautionary instruction would have been, as
Bruton
itself demonstrates, of questionable value. We also note that the cautionary instruction in
Curry
may well have been based on other considerations. The district court had forbidden the parties to refer to Roger Curry as the ringleader of the group. In footnote 9 of its opinion, the panel in
Curry
noted that the “district court did not abuse its discretion when it denied Roger’s motion for mistrial and instead cautioned the jury that the statements of Bush may only be held against him and not any of the other defendants."
Curry,
. Mr. Miller similarly invites our attention to
United States v. Chrismon,
.
See also United States v. Gio,
. As the Supreme Court has recently stated: There is a preference in the federal system for joint trials of defendants who are indicated together. Joint trials “play a vital role in the criminal justice system.” They promote efficiency and "serve the interests of justice by avoiding the scandal and inequity of inconsistent verdicts.”
Zafiro v. United States,
— U.S. -, -,
