In this opinion we address some issues new to this circuit about practice under the federal habeas corpus statute, 28 U.S.C. § 2254. Joseph Teti appeals from the denial of his federal petition for habeas corpus relief. 1 The primary question in this appeal is whether the federal district court erred in applying the presumption of correctness under 28 U.S.C. § 2254(e)(1) to the state appellate court’s findings of facts and in denying discovery and an evidentia-ry hearing.
Substantively, Teti argues that the state court erred in denying his claim that he had received ineffective assistance of counsel in violation of his Sixth and Fourteenth Amendment rights because, inter alia, his original defense attorney Bradford Keene had an actual conflict of interest.
We affirm the denial of habeas corpus relief by the district court.
I.
We describe the facts as they appear from the state court record. Teti was convicted in Massachusetts Superior Court in April 1999 on charges stemming from two cocaine trafficking incidents in 1996.
See
Mass. Gen. Laws ch. 94C, § 32E(b)(4). As he had provided cocaine to an undercover agent, Teti’s primary defense was entrapment.
Commonwealth v. Teti
On the third day of Teti’s four-day trial the prosecutor raised an issue of possible conflict: that defense attorney Bradford Keene had also represented a witness hostile to Teti.
Id.
at 283,
McBride, who did know as early as February 1999 that Lobello was the informant, had called Lobello as a hostile witness in the vain hopes that Lobello would bolster the entrapment defense by demonstrating that Teti was not predisposed to sell cocaine and by appearing himself to be “the instigator of the drug transactions, as well as a reprobate and liar, testifying to curry favor with the Federal authorities,”
id.
at 282,
Upon hearing the prosecutor’s concern about a potential conflict, the court immediately questioned both Keene and McBride. That questioning, which has been the only hearing on this issue, underlies the description of the facts by the Massachusetts Appeals Court (“MAC”) discussed below. Initially, the state trial judge stated her impression that Keene had a conflict of interest; she required him to withdraw, but allowed the trial to con *54 tinue. The jury convicted Teti, and he was sentenced to fifteen years’ imprisonment.
Two and a half years later, Teti moved for a new trial and, on denial of the new trial motion, moved for reconsideration. That motion was also denied. The same state judge who tried the case, in denying the motion for a new trial, concluded that contrary to her initial impression, there was no actual conflict of interest and no showing that any prejudice had resulted, even if there had been a conflict. Because Massachusetts law largely leaves the decision to grant an evidentiary hearing on a new trial motion to the sound discretion of the trial judge, and because Teti had not presented any substantial question of fact warranting an evidentiary hearing, the state judge declined to grant one.
See
Mass. R.Crim. P. 30(c)(3);
Commonwealth v. Stewart,
The MAC in 2004 affirmed the conviction as well as the denial of Teti’s motion for a new trial. The MAC rejected Teti’s claims that Keene had an actual conflict of interest in violation of Teti’s federal and state constitutional rights,
Teti,
The MAC made certain key findings of fact, which the federal habeas court later presumed were correct: (1) that, contrary to what the prosecutor had initially believed, Keene had not represented Lobello in seeking a Rule 35(b) motion in federal court to reduce Lobello’s federal sentence,
id.
at 283, 285 n. 10,
The MAC then considered whether apart from an actual conflict, Teti’s counsel had a potential or, as state law phrases it, a “tenuous” conflict. It determined that, whether or not there had been a conflict, there was no prejudice in any event.
Id.
at 286,
Teti had also presented to the MAC a claim of ineffective assistance by McBride,
*55
based on several alleged deficiencies. Teti argued that McBride was ineffective in failing to investigate Keene’s potential conflicts and to tell Teti about Keene’s prior representation of Lobello, but the MAC held there was no ineffectiveness and no prejudice.
Id.
at 287,
Teti also argued that McBride was ineffective for failing to move to sever the indictments against him; for introducing evidence of additional, uncharged drug transactions; and for promising in his opening statement but then not providing testimony about the effects of Teti’s psychological and drug dependency problems on his state of mind. The MAC concluded that none of these actions constituted ineffective assistance.
See id.
at 286-89,
The Supreme Judicial Court denied further appellate review.
Commonwealth v. Teti,
II.
In February 2005, Teti filed a petition for habeas corpus in federal court under 28 U.S.C. § 2254, raising the same arguments he had made to the MAC.
In an able opinion, the district court denied Teti’s requests for discovery and an evidentiary hearing and denied habeas relief. The court applied the statutory presumption of correctness to the state court’s factual determinations and viewed the claims actually ruled upon by the MAC through the deferential lens of the Antiter-rorism and Effective Death Penalty Act (“AEDPA”), Pub.L. No. 104-132, 110 Stat. 1214 (1996). See 28 U.S.C. § 2254(d), (e)(1).
The district court held that the state court holdings-that there was neither an actual conflict nor any prejudice-were not an unreasonable application of federal law under AEDPA.
See
28 U.S.C. § 2254(d)(1). Under federal law, an ineffective assistance of counsel claim requires demonstrating “a reasonable probability that, but for counsel’s unprofessional errors, the result of the proceeding would have been different.”
Strickland v. Washington,
Although the MAC had relied on state law in concluding there was no actual conflict, the district court noted that state law is more favorable than federal law to the defendant on this issue because under state law, if there were an actual conflict of
*56
interest, that conflict would result in automatic reversal regardless of whether any prejudice could be shown.
See Commonwealth v. Croken,
As for Teti’s claim that McBride shared Keene’s conflict of interest, the district court determined that the MAC had not adjudicated that claim on the merits, even though Teti had presented it to the court; it thus reviewed the claim de novo instead of applying § 2254(d)(l)’s highly deferential standard.
See DiBenedetto v. Hall,
The federal habeas court denied a later motion to amend or to alter its findings. It granted a certificate of appealability sua sponte regarding issues related to the effectiveness of Teti’s counsel.
In addressing these issues, we recite only so much of the case and underlying facts as needed for analysis of the denial of federal habeas relief.
III.
We review the district court’s legal conclusions de novo; further, “[w]hen the district court undertakes no independent factfinding in a habeas case, we are effectively in the same position as the district court vis-a-vis the state court record,” so we review the district court’s factual conclusions de novo as well.
Pike v. Guarino,
A. Deference Under § 2254.(d)
Under AEDPA, our review of state court legal and factual determinations is highly deferential. When a petitioner presses a claim that was adjudicated on the merits in state court, federal habeas courts must defer to the state court determination unless it:
(1) resulted in a decision that was contrary to, or involved an unreasonable application of, clearly established Federal law, as determined by the Supreme Court of the United States; or
(2) resulted in a decision that was based on an unreasonable determination of the facts in light of the evidence presented in the State court proceeding.
28 U.S.C. § 2254(d).
Section 2254(d) applies to Teti’s claim that Keene provided ineffective assistance of counsel due to an actual or potential conflict of interest because the MAC adjudicated that claim on the merits. A matter is “adjudicated on the merits” if there is a “decision finally resolving the parties’ claims, with res judicata effect, that is based on the substance of the claim advanced, rather than on a procedural, or other, ground.”
Sellan v. Kuhlman,
261
*57
F.3d 303, 311 (2d Cir.2001). Contrary to Teti’s argument, § 2254(d) applies regardless of the procedures employed or the decision reached by the state court, as long as a substantive decision
was
reached; the adequacy of the procedures and of the decision are addressed through the lens of § 2254(d), not as a threshold matter.
See, e.g., Lambert v. Blodgett,
Since an ineffective assistance of counsel claim is a mixed question of law and fact,
Strickland,
Based on the facts as described by the MAC, it was not unreasonable for the MAC to conclude that Keene’s representation was not constitutionally deficient. Even assuming that Keene’s representation of Lobello and Teti overlapped for some period of time and even assuming that Keene was actively engaged in Teti’s trial, Keene had stopped representing Lo-bello a year before the trial and long before he knew that Lobello was the informant in Teti’s case. Further, the MAC found that Keene’s representation of Lo-bello was very limited and would not have related in any way to Teti’s case. Based on these facts, there were no competing loyalties and no possible detrimental effect on Teti’s representation. To press this claim, then, Teti must challenge the fact-finding on which the MAC’S conclusion rested. We turn to § 2254(e).
Our mode of analysis does not suggest, however, that habeas courts should always consider the reasonableness of the state court’s determination under § 2254(d) before considering the validity of the state court factfinding under § 2254(e). To suggest a set order of analysis would unnecessarily constrain habeas courts.
Accord Lambert v. Blackwell,
B. Deference Under § 2251p(e)
Under § 2254(e)(1), “a determination of a factual issue made by a State court shall be presumed to be correct.” The petitioner bears the burden of overcoming that presumption by providing “clear and convincing evidence.” 28 U.S.C. § 2254(e)(1).
The relationship between § 2254(d)(2) and § 2254(e)(1), both of which apply to state court fact determinations, has caused some confusion. The Supreme Court has suggested that § 2254(e)(1) applies to “determinations of factual issues, rather than decisions,” while § 2254(d)(2) “applies to the granting of habeas relief’ itself.
Mil
*58
ler-El v. Cockrell,
This question has not yet been definitively resolved, nor do we attempt our own resolution here.
3
Since
Miller-El,
the Supreme Court has not further clarified this issue.
See Rice v. Collins,
For now we follow the Supreme Court’s lead in
Miller-El
and apply § 2254(e)(1) to the MAC’s individual factfindings. The decision to do so is not determinative, however, for not only do both provisions “express the same fundamental principle of deference to state court findings,”
Blackwell,
1. Presumption of Correctness Under § 2254(e)(1)
The “presumption of correctness is equally applicable when a state appellate court, as opposed to a state trial court, makes the finding of fact.”
Norton v. Spencer,
*59
There is some disagreement about whether the presumption of correctness always applies or if there are instead certain procedural prerequisites.
See, e.g., Mayes v. Gibson,
While the policy arguments underlying these conclusions are reasonable, we must look first to the language of the statute. When Congress revised § 2254 under AEDPA, it removed language that had limited the presumption to determinations made “after a hearing on the merits of a factual issue,” as well as the statute’s list of procedural defects that previously deprived state court factfinding of the presumption. As Professors Fallon, Meltzer, and Shapiro have noted, these changes suggest that “the presumption of correctness now applies across the board.” R. Fallon et al. at 1355; see
also Valdez,
The Third Circuit has taken the position that “the extent to which a state court provides a ‘full and fair hearing’ is no longer a threshold requirement before deference applies; but it might be a consideration while applying deference under § 2254(d)(2) and § 2254(e)(1).”
Blackwell,
Teti does not attempt to argue that he has clear and convincing evidence to overcome the presumption here. Instead he tries to refute the MAC’S factual determinations by employing the same documents already considered by the state courts. That approach fails. Describing how different parties stated different versions of events does not constitute the needed showing of clear and convincing evidence; rather, the state trial judge’s implicit credibility determinations, adopted by the MAC, are exactly the type of factual determinations to which we defer, at least short of any indication of serious error.
Rice,
Teti also argues that the trial judge’s conclusion post-trial that there was no relevant conflict of interest contradicts her in-court statements. That argument does not work either. First, the judge’s in-court statements were not final determinations and thus not inconsistent with her later ruling.
Teti,
Because the presumption of correctness applies to all the state court’s factfindings, and because Teti does not point us to any clear and convincing evidence that refutes those factfindings, we turn next to whether he should have been allowed discovery or an evidentiary hearing.
2. Discovery Under Rule 6
Habeas corpus proceedings under § 2254 are civil in nature, but they are governed by a discrete set of procedural rules.
Mayle v. Felix,
Teti did not comply with the specific requirements of Rule (6)(b); his request for discovery is generalized and does not indicate exactly what information he seeks to obtain. A habeas proceeding is not a fishing expedition.
E.g., Stanford v. Parker,
In addition, as the district court noted, Teti did not meet the Rule’s requirement of “good cause.” The Supreme Court has defined “good cause” in this context as specific allegations that give a court “reason to believe that the petitioner may, if the facts are fully developed, be able to demonstrate that he is ... entitled to relief.”
Bracy,
3. Evidentiary Hearings
We also review the decision whether to grant an evidentiary hearing for abuse of discretion.
Pike,
Before AEDPA, judge-made law governed the decision whether to grant an evidentiary hearing. Under
Townsend v. Sain,
But
Townsend
was “significantly qualified by later case law and congressional action[,] leaving the circuit courts in some uncertainty” about when new federal fact-finding for state prisoners is appropriate.
4
Bader,
At the least, where not explicitly prohibited by § 2254, federal habeas judges retain discretion to grant evidentiary hearings.
See
Rules Governing § 2254 Cases, Rule 8(a);
Schriro,
We need not resolve today the question of whether federal habeas evidentiary hearings are ever mandated. First, AED-PA is clear on one point: an evidentiary hearing is prohibited if “the applicant has failed to develop the factual basis of a claim in State court proceedings” unless
*62
certain stringent exceptions apply. 28 U.S.C. § 2254(e)(2). It may seem odd to prohibit an evidentiary hearing where the defendant did not present the facts to a state court but not to prohibit one where he did. But the prohibition is analogous to a procedural default rule, furthering the principles of comity, finality, and federalism by requiring the prisoner to present his claims fully before the state courts.
Michael Williams v. Taylor,
Section 2254(e)(2)’s bar applies where there has been a “lack of diligence” on the part of the petitioner or his counsel before the state courts.
Id.
at 432,
Second, even if Teti’s request for an evidentiary hearing were not barred by § 2254(e)(2) for lack of diligence, he fails on another threshold matter, just as he did before the state trial court. Akin to Rule 6’s “good cause” requirement, a habeas judge, before granting an evidentiary hearing, “must [first] consider whether such a hearing could enable an applicant to prove the petition’s factual allegations, which, if true, would entitle the applicant to federal habeas relief.”
Schriro,
The requirement is not so stringent that Teti must point to specific facts he
will
establish that will entitle him to relief, but rather that his allegations would entitle him to relief and the hearing is likely to elicit the factual support for those allegations.
See, e.g., Insyxiengmay,
*63
The district court correctly considered this threshold question, concluding that Teti had not given any “indication that an evidentiary hearing would give rise to ‘clear and convincing evidence’ that petitioner’s trial counsel suffered from a conflict of interest.” We turn, however, directly to the question of prejudice.
See Strickland,
Teti argues that he suffered prejudice because he was unable to obtain a plea agreement. He does not, however, make the argument that his attorneys failed to obtain a plea agreement because of their conflicted loyalties. Nor would such an argument be plausible, given that Keene ceased representing Lobello shortly after, if not before, he began representing Teti. Teti instead argues that McBride was unable to secure a plea agreement for him because the Commonwealth was worried, once the conflict of interest concern was aired, that such an agreement might be vulnerable on appeal. The argument is hard to credit, as one would think a conviction would have been more vulnerable on appeal. Regardless, it is insufficient.
Teti might be arguing that he was harmed because of procedural irregularities in the hearing before the state trial judge. The relevant harm, however, is the one emanating from Keene’s alleged conflict of interest. If a federal evidentiary hearing could cure any procedural irregularities, Teti still has not explained what harm he would hope to demonstrate beyond the alleged plea agreement harm already discussed.
Teti has not argued sufficient harm to satisfy Mickens, much less the prejudice needed to meet the more stringent standard for establishing ineffective assistance where counsel has a potential, rather than actual, conflict of interest. In short, Teti “continues to assert he needs [an] eviden-tiary hearing to factually develop his constitutional claims, but he has failed at every level to make a factual showing (as opposed to conclusory statements) as to why those claims merit development through the crucible of an official hearing.” Reynolds v. Bagley, 498 F.3d 549, 555 (6th Cir.2007).
Because Teti provides no clear and convincing evidence that the MAC’s factual determinations were erroneous, and because he has not adequately specified what facts he seeks to establish through discovery or an evidentiary hearing, the MAC’s factual determinations stand, as does its ultimate conclusion under § 2254(d)(1) that Keene did not provide ineffective assistance of counsel due to any conflict of interest.
See Allison,
C. Remaining Claims
Teti also claims that McBride shared Keene’s conflict of interest and that he received ineffective assistance of counsel for several additional reasons.
The district court reviewed de novo the claim that McBride had a conflict. It did so on the basis that the MAC did not expressly rule on this issue, although the issue had been presented to it.
See Fortini,
We rely on the district court’s reasoning on the remaining ineffective assis *64 tance claims against McBride. The district court correctly applied § 2254(d)(1) to these claims, as they were addressed by the state court. The district court reasoned as follows: Because Teti’s main defense was entrapment, McBride’s failure to move to sever the two indictments and his allowance of the introduction of evidence on similar but uncharged drug transactions could have been part of a reasonable defense strategy to highlight that the same federal agent initiated all the transactions. Further, a motion to sever would have failed, as joinder was appropriate under state law. Finally, the relevant information about Teti’s state of mind was provided when Teti himself testified as to his drug dependency and depression; McBride had promised nothing further in his opening statement. The MAC’s conclusion that none of these arguments established ineffective assistance of counsel was therefore not an unreasonable application of federal law under § 2254(d)(1). We agree.
Teti has been well and inventively represented on appeal. The denial of the petition for habeas relief is affirmed.
Notes
. Pursuant to Fed. R.App. P. 43(c)(2), Acting Commissioner James Bender has been substituted for former Commissioner Kathleen Den-nehy.
. Rule 35(b) allows the prosecutor to move for a reduced sentence based on the defendant's "substantial assistance in investigating or prosecuting another person" after the defendant was sentenced. Fed.R.Crim.P. 35(b)(1)(A).
. The Ninth Circuit, for example, draws a slightly different distinction than the one described above. Under that court's approach, § 2254(d)(2) applies when the petitioner argues that the state court drew unreasonable conclusions based on the evidence already in the record; § 2254(e)(1) applies, on the other hand, when the petitioner wishes to bring in new evidence to challenge the facts found by the state court.
See, e.g., Blodgett,
Professors Hertz and Liebman would apply the provisions sequentially: under their approach, courts should consider first whether a state court’s factfindings are reasonable under § 2254(d)(2), and if they are, only then should the courts apply § 2254(e)(l)’s presumption of correctness. 1 Hertz & Liebman § 20.2c.
. AEDPA did not change the standard for granting evidentiary hearings under § 2255, which applies to federal petitioners. This suggests that Congress intended “to create a discrepancy between the (respectively, somewhat narrower and broader) rights to a hearing in section 2254 and section 2255." 2 Hertz & Liebman § 41.6d. This discrepancy underscores the principles of comity and federalism embodied in § 2254.
