This case returns to us on remand from the Supreme Court. We affirm Fellers’s conviction, but remand to the district court for resentencing.
I.
Two policemen went to Fellers’s home in Lincoln, Nebraska, to arrest him on February 24, 2000. After the officers entered the home, they told Fellers that a grand jury had indicted him for conspiracy to distribute methamphetamine, that the indictment concerned an alleged conspiracy with certain named persons, and that the officers had a federal warrant for his arrest. Fellers stated that he knew the co-conspirators in question and that he had used methamphetamine in the past.
After about 15 minutes, the officers arrested Fellers and transported him to jail. Fellers was booked and taken to an interview room, where the officers gave him a full Miranda warning. Fellers waived his Miranda rights both verbally and in writing, repeated the statements he had made at his home, and stated that he had purchased methamphetamine from some of the co-conspirators named in the indictment. Fellers admitted knowing several more individuals and that he had purchased methamphetamine from some of them and used methamphetamine with some of them. He also stated that he had loaned money to another co-conspirator even though he suspected that the money might have been used for drug transactions. Throughout his jailhouse interrogation, however, Fellers repeatedly denied that he had ever sold methamphetamine.
Following a magistrate judge’s hearing and recommendation, the district court suppressed the statements made at Fel *1093 lers’s home, but allowed Fellers’s jailhouse statements to be introduced at trial. , A jury found Fellers guilty of conspiracy to distribute and to possess with intent to distribute between 50 and 500 grams of methamphetamine. At sentencing, over Fellers’s objection, the district court found that Fellers was actually responsible for more than 500 grams of methamphetamine and accordingly raised Fellers’s base offense level from 30 to 32. The district court also raised Fellers’s criminal history category from category II to category III based upon conduct underlying a prior guilty plea, even though the conviction entered pursuant to the plea was later expunged.
We upheld Fellers’s conviction against Fifth and Sixth Amendment challenges and held that Fellers’s jailhouse statements were admissible under
Oregon v. Elstad,
II.
Fellers argues that Elstad does not apply to violations of the Sixth Amendment because the Elstad rule was never designed to deal with actual violations of the Constitution. In addition, Fellers argues that Elstad — which was crafted to serve the Fifth Amendment — is inapplicable because it is ill-suited to serve the distinct concerns raised by the Sixth Amendment and because violations of the Miranda rule are fundamentally different from the Sixth Amendment violation at issue in this case. We disagree.
A.
In
Elstad,
the Supreme Court held that an initial failure to administer
Miranda
warnings, in the absence of actual coercion or tactics calculated to undermine an individual’s free will, does not require the suppression of subsequent voluntary statements given after proper
Miranda
warnings and a valid waiver of
Miranda
rights.
Elstad,
*1094
The Supreme Court stated in
Elstad
that its rejection of the exclusionary rule in the
Miranda,
context was premised on the fact that a violation of
Miranda
was not, by itself, a violation of the Fifth Amendment and on the fact that the protections afforded by the
Miranda
rule sweep more broadly than the Fifth Amendment itself.
See id.
at 305-07,
B.
Whether the exclusionary rule applies to evidence acquired subsequent to a constitutional violation requires consideration of the possible admissibility of the evidence in light of the “distinct policies and interests” of each Amendment.
See Elstad,
Although the exclusionary rule is most often applied in the Fourth Amendment context, its application has not been limited to Fourth Amendment violations.
Nix v. Williams,
The Fourth Amendment traditionally mandates a “broad application” of the exclusionary rule.
Elstad,
The Fifth Amendment, in contrast, prohibits the prosecution from using compelled testimony in its case in chief and ensures that any evidence introduced at trial will be voluntary and thus trustworthy.
Elstad,
The Sixth Amendment, prohibits the use at trial of statements deliberately elicited from a suspect after he has been indicted and in the absence of counsel.
Massiah v. United States,
We conclude that the exclusionary rule is inapplicable in Fellers’s case because, as with the Fifth Amendment in Elstad, the use of the exclusionary rule in this case would serve neither deterrence nor any other goal of the Sixth Amendment. Both the deterrence of future Sixth Amendment violations and the vindication of the Amendment’s right-to-counsel guarantee have been effectuated through the exclusion of Fellers’s initial statements. Although the officers acknowledged that they used Fell'ers’s initial jailhouse statements (obtained after securing a Miranda waiver) in order to extract further admissions from him, there is no indication that the interrogating officers made any reference to Fellers’s prior uncounseled statements in order to prompt *1096 him into making new incriminating statements. In addition, because Fellers’s initial statements related to persons already named in the indictment and to his own personal use of methamphetamine (the drug he was accused of conspiring to distribute and to possess with intent to distribute), the officers would have had a basis for the questions asked during the jailhouse interrogation even if Fellers had said nothing at all at his home. Furthermore, although Fellers’s subsequent statements did reestablish matters addressed by his prior unwarned statements, Fellers also made numerous statements about parties, events, and activities not covered in his prior statements. Accordingly, suppression of Fellers’s subsequent statements would not promote the fairness of the trial process because their introduction was not unfair to Fellers.
Our conclusion is consistent with historical applications of the exclusionary rule in the Sixth Amendment context. In such cases, evidence acquired after a Sixth Amendment violation is excluded in the absence of proof that the Sixth Amendment violation did not contribute to or produce the subsequent evidence.
See, e.g., United States v. Wade,
C.
The similarities between the Sixth Amendment context at issue in Fellers’s case and the Fifth Amendment context at issue in Elstad support our conclusion that the Elstad rule applies when a suspect makes incriminating statements after a knowing and voluntary waiver of his right to counsel, notwithstanding earlier police questioning in violation of the Sixth Amendment. Although the Supreme Court has never explicitly stated that the Elstad rationale is applicable to Sixth Amendment violations, it has emphasized the similarity between pre-indictment suspects subjected to custodial interrogation and post-indictment defendants subjected to questioning.
The Court has held that the scope of the right to counsel varies depending upon the usefulness of counsel to the accused at a particular proceeding and the dangers to the accused of proceeding without counsel.
Patterson v. Illinois,
In contrast with the statements made at Fellers’s home, Fellers’s jailhouse statements were given after a proper administration of
Miranda
warnings and a proper oral and written waiver of his
Miranda
rights. The
Miranda
warnings fully informed Fellers of “the sum and substance” of his Sixth Amendment rights, and his waiver of his
Miranda
rights operated as a knowing, intelligent, and voluntary waiver of his right to counsel.
Patterson,
The Supreme Court’s decision in
Michigan v. Jackson,
D.
Finally, we conclude that the officers’ conduct in this case did not vitiate the effectiveness of the
Miranda
warnings giv
*1098
en to Fellers. We apply a multi-factor test derived from the Supreme Court’s recent plurality opinion in
Missouri v. Seibert,
— U.S. -,
In Fellers’s case, the facts are much closer — if not identical — to the facts at issue in
Elstad
than to the facts at issue in
Seibert
or
Aguilar.
As in
Elstad,
the unwarned conversation at Fellers’s home was relatively brief. Although the same officers that deliberately elicited statements from Fellers at his home also conducted Fellers’s jailhouse interrogation, that interrogation took place almost one half hour later than the conversation at Fellers’s home and in a new and distinct setting. In addition, while Fellers’s warned jailhouse statements overlapped to a small degree with his initial unwarned, uncoun-seled admissions, the jailhouse interrogation went well beyond the scope of Fellers’s initial statements by inquiring about different co-conspirators and different allegations. There is also no indication that the officers in this case treated the two rounds of interrogation as continuous, such as by using statements from the unwarned conversation to prompt admissions after receipt of a
Miranda
waiver.
See Seibert,
— U.S. at -,
These facts are distinguishable from those in
Seibert
and
Aguilar,
where two almost co-extensive interrogations took place in the same interrogation room with little or no break between them.
See id.
at 2606, 2612 (“When the police were finished there was little, if anything, of incriminating potential left unsaid.”);
Aguilar,
Fellers’s case also comports with Justice Kennedy’s concurrence in
Seibert.
— U.S. at -,
III.
Even if Fellers’s jailhouse statements should have been suppressed, any error in admitting those statements at trial was harmless beyond a reasonable doubt. Although a defendant’s own confession is
*1099
“a particularly potent piece of evidence,” its erroneous introduction is harmless where the other evidence against him is so substantial that it “assured beyond a reasonable doubt that the jury would have returned a conviction even absent the confession.”
United States v. Santos,
Fellers’s jailhouse statements, in which he admitted knowing certain co-conspirators and using methamphetamine with them, were either corroborated by other government witnesses or were immaterial to the case. The testimony of each of these corroborating witnesses went largely unchallenged. Although each of the government witnesses had numerous past convictions, had used illegal drugs extensively for a number of years, and were testifying pursuant to plea bargains in hopes of a reduced sentence (all of which was made known to the jury through both testimony and exhibits), their credibility was for the jury to decide.
See, e.g., United States v. Aguayo-Delgado,
Furthermore, it is notable that although Fellers admitted to knowing numerous co-conspirators and to using and purchasing methamphetamine, he vehemently denied selling or distributing methamphetamine. Fellers’s trial counsel used this fact in his closing argument and intimated that Fellers was not involved in the distribution of methamphetamine because a police officer who was trained to elicit the truth from suspects could not elicit an admission of distribution from Fellers. Accordingly, the introduction of Fellers’s jailhouse admissions at worst had no effect on the verdict and at best militated against a conviction for conspiracy to possess methamphetamine with intent to distribute.
To prove conspiracy to distribute or to possess methamphetamine with intent to distribute, “the government must prove that two or more persons reached an agreement to distribute or possess with intent to distribute methamphetamine, that the defendant voluntarily and intentionally joined the agreement, and that at the time that the defendant joined the agreement he knew its essential purpose.”
United States v. Aguilar-Portillo,
IV.
Fellers last contends that the district court improperly enhanced his sentence based on facts not found by a jury, admitted by him, or proved beyond a reasonable doubt. Specifically, he argues that both the district court’s increase of the drug quantity attributable to him beyond that found by the jury and the district court’s reliance on facts underlying a prior expunged conviction — as opposed to the fact of the conviction itself — in order to increase his criminal history category violate his Sixth Amendment right to trial by jury.
In its recent decision in
United States v. Booker,
— U.S. -,
Fellers’s conviction is affirmed, but his case is remanded for resentencing in accordance with Booker.
Notes
. In
Chavez v. Martinez,
. Fellers’s suggestion that the psychological effect of the first statement inherently taints the second statement or coerces a post-indictment accused into expanding upon statements previously made because the first statement "let the cat out of the bag" has been squarely rejected by the Supreme Court. In
Elstad,
the Court stated that it had "never held that the psychological impact of voluntary disclosure of a guilty secret... compromises the vol-untariness of a subsequent informed waiver.”
Elstad,
. Because the district court’s enhancement of Fellers's sentence based upon an increased drug quantity entitles him to a resentencing in and of itself, we see no need to decide whether the increase in his criminal history catego-iy similarly entitles him to relief. We note, however, that the conduct underlying the expunged offense was admitted by the defendant in the context of a guilty plea.
