OPINION
Gаbriele Lopez, a.k.a. Gabriele Koenig (“Lopez”), filed a federal habeas corpus motion in the district court seeking to vacate her drug conviction because the government withheld until long after her trial potentially damaging credibility information about one of the government’s principal witnesses, in violation of the government’s disclosure obligations under
Brady v. Maryland,
In
Panetti v. Quarterman,
As we shall explain more fully, although the Court’s reasoning in
Panetti
is potentially applicable to other types of habeas claims, we do not believe
Panetti
can be read to support a construction of AEDPA that
expands
federal courts’ pre-AEDPA ability to reach the merits of claims presented in seeond-in-time habeas petitions. Lopez has not demonstrated the evidence the government failed to disclose is material to her guilt or innocence,
see United States v. Bagley,
Lopez’s claim as presented was subject to § 2255(h)(l)’s gatekeeping requirements, so she was required to obtain permission from the court of appeals before filing her § 2255 motion in district court. Because she failed to obtain our permission, the district court did not have jurisdiction to reach the merits of her
Brady
claim. Even if we construe Lopez’s appeal as a belated request to us for authorization to file her motion, we would deny certification because the newly discovered evidence wоuld not be sufficient to establish by clear and convincing evidence that no reasonable factfinder would have found her guilty of the offense.
See
§ 2255(h)(1). We also conclude the government’s conduct, albeit troublesome, was not “so grossly shocking and so outrageous as to violate the universal sense of justice,”
*1057
United, States v. Restrepo,
I.
Lopez was indicted in May 2002 on several charges of possession of cocaine base with intent to distribute. She was tried together with Elvis Singh and James Evans, with whom she lived in a house in Spokane, Washington. Two informants, David Palmer (“Palmer”) — who emerges as the central figure in this appeal — and Janie Arambula (“Arambula”), testified on behalf of the government.
Palmer testified about an occasion on April 9, 2002, when he went to the defendants’ house in Spokane to buy crack cocaine with two other particiрants. The jury heard Palmer’s recorded conversations with these participants regarding their drug purchase inside the house. Palmer testified that he did not see Lopez on that occasion and had never met her at any other time. Defense counsel cross-examined Palmer about a variety of issues, such as whether he had used or presently used drugs and the payment for his work as an informant.
During the trial, a case agent testified that he had taken Palmer’s Drug Enforcement Administration (“DEA”) file to the United States Attorney’s Office and that Assistant United States Attorney Tom Rice (“Rice”) had spoken with Agent Shelby Smith (“Agent Smith”) of the local DEA. The case agent further testified that Rice had written a note to one of the government’s trial attorneys that there was no Brady material in the file. Frank Cikutovich, counsel for one of the co-defendants, told the court he was concerned about whether the government had disclosed all Brady material about Palmer and requested that the court review Palmer’s file for Brady material. The court declined, saying it was the responsibility of the United States Attorney’s Office, not the court, to do so.
As Lopez learned several years later, on June 6, 2002 — two months before her trial — Lieutenant Chandler Bailey (“Lt. Bailey”) of the Spokane Police Department Drug Task Force had called Agent Smith to tell him that the City and County of Spokane would no longer be using Palmer as a confidential source in controlled drug buys because he was “unreliable.” Lt. Bailey had learned that Palmer had been sexually involved with at least one woman who was the subject of a drug investigation conducted by the Spokane Police Department, that some officers believed Palmer had used investigative funds to buy services from prostitutes and that Palmer usually sought out women when he chose his own targets for investigation. Although Lt. Bailey had prepared a memоrandum discussing the allegations that Palmer was “unreliable” (the “Bailey memorandum”), he had not sent a copy to Agent Smith and the memorandum was not in the file at the time Rice inspected it. There is no evidence that Agent Smith relayed the information from the conversation he had with Lt. Bailey to Rice or Assistant United States Attorney Earl Hicks, who was then in charge of the prosecution of Lopez and her co-defendants. Nor is there evidence that the government attorneys involved in the cases asked the pertinent government agents whether they had any personal knowledge concerning the credibility of the government witnesses, or any other Brady information, as opposed to merely looking in Palmer’s file.
The defense completed its cross-examination of Palmer without being informed that the City and County of Spokane were no longer using Palmer because he was *1058 considered unreliable. Palmer’s testimony did not directly inculpate Lopez in any drug transaction, and at the сlose of evidence the court instructed the jury that the testimony of an informant should be examined with greater care than the testimony of an unpaid witness.
Another informant, Arambula, testified about a wire-recorded controlled purchase of cocaine base she made on April 18, 2002 from Lopez’s co-defendant Singh, in which Lopez participated. This was not the controlled purchase about which Palmer testified. Arambula’s testimony was that she placed a consensually monitored and recorded telephone call to Singh to arrange to purchase a half ounce of crack cocaine. When she arrived at the house, Lopez answered the door and led her to a bedroom where Singh was on the bed. Arambula asked to buy a half ounce of crack cocaine, she and Singh discussed the price, and then Lopez retrieved and weighed the crack cocaine for Arambula. Lopez gave her the crack cocaine, and Arambula then laid the money on Singh’s chest. Agent Beaumont testified about this transaction, explaining that he was with Arambula during her telephone call with Singh and that he conducted surveillance during the controlled purchase. The tape of the telephone call and the transmitter wire recording of the controlled buy were admitted into evidence and played for the jury.
The jury found the defendants guilty of the cocaine base charges. Specifically, the jury found Lopez guilty of two counts of violation of 21 U.S.C. § 841(a)(1) (Count 5-knowingly and unlawfully distributing a mixture or substance containing more than five grams of cocaine base; and Count 6— knowingly and unlawfully possessing with intent to distribute a mixture or substance containing more than 50 grams of cocaine base).
The district court set aside the jury’s verdict on Count 6, finding insufficient evidence to support a conviction. It found, howevеr, there was clear and convincing evidence to support the jury verdict on Count 5. The court sentenced Lopez to the mandatory minimum term of five years. On Lopez’s direct appeal, we affirmed her conviction and sentence in an unpublished disposition.
See United States v. Singh,
In March 2005, Lopez filed her first motion to set aside, vacate or correct her sentence under § 2255, claiming ineffective assistance of counsel, a violation of her Sixth Amendment right to an impartial jury, a due process violation and a sentence in violation of
United States v. Booker,
Meanwhile, the district court in Heit held extensive pretrial evidentiary hearings on the defendant’s motion to dismiss based on the government’s alleged outrageous behavior in using Palmer as a confidential informant. Although the court recognized that “Palmer’s testimony [was] critical to the Government as he [was] the only ‘government agent’ to have personally talked with [the defendant],” it nevertheless denied Heit’s motion and precluded her from introducing evidence about uncharged allegations of Palmer’s sexual misconduct and being “black balled” by gov *1059 ernment agencies. The court found that any relevance the alleged sexual incidents might have had regarding Palmer’s credibility or motives was substantially outweighed by their prejudicial value, especially in light of other information Heit could utilize to impeach Palmer.
In the сase before us, Lopez filed her § 2255 motion in the district court in November 2006 to vacate her conviction and dismiss the indictment with prejudice, based on the government’s alleged outrageous behavior in failing to furnish damaging impeachment information concerning Palmer as required under Brady. Rejecting the government’s argument that Lopez’s motion was an impermissible second or successive motion that had not been certified by this court under § 2255(h), the district court denied her motion on the merits, finding that the impeachment evidence would not have materially affected the guilty verdict on Count 5. This appeal followed.
II.
Lopez contends the district court erred in finding the government’s failure to disclose the information about Palmer contained in the Bailey memorandum did not violate Brady. In determining whether there has been a
Brady
violation, we consider whether the evidence was: (1) favorable to the accused, (2) suppressed by the government and (3) material to the guilt or innocence of the defendant.
See United States v. Jemigan,
This is Lopez’s second § 2255 motion challenging her conviction, however, so before we can address the merits of her
Brady
сlaim we must first decide whether AEDPA restricts her ability to bring this motion. AEDPA imposes significant limitations on the power of federal courts to award relief to prisoners who file “second or successive” habeas petitions,
see Cooper v. Calderon,
A.
Prior to AEDPA’s enactment in 1996, “a complex and evolving body of equitable principles informed and controlled by historical usage, statutory developments, and judicial decisions” known as the abuse-of-the-writ doctrine guided federal courts’ consideration of second-in-time habeas petitions.
McCleskey v. Zant,
Although the Supreme Court has not conducted an abuse-of-the-writ analysis of a
Brady
claim, it did address a procedurally defaulted
Brady
claim in
Strickler v. Greene,
B.
In 1996, Congress enacted AEDPA, codifying the judicially established principles reflected in the abuse-of-the-writ doctrine and further restricting the availability of
*1061
relief to habeas petitioners.
See Felker v. Turpin,
Section 2244(a) governs when a court may entertain a § 2255 motion (challenging a federal conviction) after an earlier § 2255 motion challenging the federal conviction has already been decided:
No circuit or district judge shall be required to entertain an application for a writ of habeas corpus to inquire into the detention of a person pursuant to a judgment of a court of the United States if it appears that the legality of such detention has been determined by a judge or court of the United States on a prior application for a writ of habeas corpus, except as provided in section 2255.
Section 2255(h) in turn provides:
A second or successive motion must be certified as provided in section 2244 by a panel of the appropriate court of appeals to contain:
(1) newly discovered evidence that, if proven and viewed in light of the evidence as a whole, would be sufficient to establish by clear and convincing evidence that no reasonable factfinder would have found the movant guilty of the offense; or
(2) a new rule of constitutional law, made retroactive to cases on collateral review by the Supreme Court, that was previously unavailable.
Accordingly, a petitioner must move for authorization from this court to file a “second or successive” § 2255 motion in the district court, and the motion will be denied unless the petitioner makes a prima facie showing that satisfies the § 2255(h)(1) gatekeeping requirements.
6
See Cooper,
Reading these provisions literally, every second-in-time § 2255 motion would be barred unless the petitioner first obtains authorization from the court of appeals. Because the court of appeals’ permission is contingent upon the claim’s satisfaction of AEDPA’s gatekeeping provisions, every second-in-time habeas claim would be barred unless it establishes by clear and convincing evidence that no reasonable factfinder would have convicted the prisoner of the underlying offense or that the petition is based on a “new rule of constitutional law, made retroactive to eases on collateral review by the Supreme Court, that was previously unavailable.” § 2255(h)(2), § 2244(b)(2)(A).
The Supreme Court, however, has not always read “second or successive” literal
*1062
ly. In
Stewart v. Martinez-Villareal,
In
Slack v. Daniel,
In
Panetti v. Quarterman,
The phrase “second or successive” is not self-defining. It takes its full meaning from our case law, including decisions predating the enactment of [AEDPA], The Court has declined to interpret “second or successive” as referring to all § 2254 applications filed second or successively in time, even when the later *1063 filings address a state-court judgment already challenged in a prior § 2254 application.
Id. Thе Court cited three considerations supporting its conclusion that Congress did not intend to subject unripe Ford claims to AEDPA’s gatekeeping provisions: (1) the implications for habeas practice of adopting a literal interpretation of “second or successive,” (2) the purposes of AEDPA and (3) the Court’s prior habeas corpus decisions, including those applying the abuse-of-the-writ doctrine. 7 See id. at 2853-54. The Court cautioned against interpreting AEDPA’s “second or successive” provisions in a way that would foreclose any federal review of a constitutional claim, or otherwise lead to perverse results, absent a clear indication that Congress intended that result. See id. at 2854. Usually “a petition filed second in time and not otherwise permitted by the terms of § 2244 will not survive AEDPA’s ‘second or successive’ bar,” but the Court was reluctant to construe the statute “in a manner that would require unripe (and, often, factually unsupported) сlaims to be raised as a mere formalityfin the first petition].” Id. at2855. 8
C.
The Supreme Court has not decided whether the considerations it identified in Panetti apply to other types of second-in-time claims or whether second-in-time Brady claims are “second or successive” under AEDPA. These are also open questions in our circuit. 9 Lopez and amici argue the considerations in Panetti apply with equal force to Brady claims, so all Brady claims should be exempt from AEDPA’s gatekeeping provisions. The government, on the other hand, contends all second-in-time Brady claims are subject to AEDPA’s gatekeeping provisions, because they are “second or successive” claims that rely on “newly discovered evidence,” see § 2255(h)(1).
We agree with Lopez and amici that
Panetti
is relevant to this inquiry.
Panetti
recognized that “second or successive” is a term of art that may not always be read literally.
See Panetti
Given the nature of
Brady
claims, petitioners often may not be at fault for failing to raise the claim in their first habeas petition. It is the prosecutor who violates
Brady’s
disclosure obligations by not providing favorable evidence to the defense, and that prosecutorial error may not surface until petitioner’s first habeas petition has already been resolved. Such prosecutorial error, however, does not rise to the level of a constitutional violation unless petitioner demonstrates a threshold level of prejudice: the undisclosed evidence must be material.
See Strickler,
Before AEDPA’s passage, if the prosecution failed to disclose the potential
Brady
evidence until after a first habeas petition had been resolved, the petitioner could then raise the
Brady
claim in a second-in-time petition so long as it was not barred by the abuse-of-the-writ doctrine. Applying the prejudice analysis in
Strickler,
federal courts could reach the merits of second-in-time
Brady
claims only when the suppressed evidence was material, and would have had to dismiss as an abuse of the writ meritless claims that did not establish materiality.
See Strickler,
In contrast, under a literal reading of “second or successive” in AEDPA, federal courts would lack jurisdiction to consider any second-in-time Brady claims unless petitioner demonstrates by clear and convincing evidence that no reasonable factfinder would have found petitioner guilty of the offense had the newly disclosed evidence been available at trial. See § 2255(h)(1). If § 2255(h) applies literally to every second-in-time Brady claim, federal courts would be unable to resolve an entire subset of meritorious Brady claims: those where petitioner can show the suppressed evidence establishes a reasonable probability of a different result and is therefore material under Brady, but cannot, under § 2255(h)(l)’s more demanding prejudice standard, show that the evidence establishes by clear and convincing evidence that no reasonable juror would have voted to convict petitiоner.
Lopez and amici are therefore correct that the broad rule the government advocates, under which
all
second-in-time
Brady
claims would be subject to § 2255(h)(1), would completely foreclose federal review of some meritorious claims and reward
*1065
prosecutors for failing to meet their constitutional disclosure obligations under
Brady.
10
This would seem a perverse result and a departure from the Supreme Court’s abuse-of-the-writ jurisprudence, see
Strickler,
Panetti,
however, does not provide an easy answer to how federal courts should treat meritorious second-in-time
Brady
claims under AEDPA. Although the considerations in
Panetti
seem relevant, the Court’s reasoning may not translate to second-in-time
Brady
claims, for at least two reasons. As the government has argued, § 2255(h)(1) contains an express statutory standard for dealing with “second or successive” claims based on “newly discovered evidence.”
Brady
claims, by their nature, necessarily rest on newly discovered evidence. Congress’ expressed intent to limit the circumstances in which a court can entertain a petition based on newly discovered evidence may therefore distinguish
Brady
claims from the “unusual posture presented” by
Ford
claims,
Panetti,
Nonetheless, even if
Panetti
could be viewed as supporting an exemption from AEDPA’s gatekeeping provisions for meritorious
Brady
claims, such a rule would not benefit Lopez, because we conclude (1) that
Brady
claims that fail to establish materiality (and therefore lack merit) are subject to AEDPA’s gatekeeping provisions and (2) that Lopez has failed to establish materiality.
12
Whatever the consequence that a literal application of § 2255(h)(1) would have on meritorious
Brady
claims, Lopez’s and amici’s argument that
Panetti
supports exempting
all
second-in-time
Brady
claims from AED-PA’s gatekeeping provisions is untenable. Second-in-time
Brady
claims that did not establish materiality would have bеen barred under the abuse-of-the-writ doctrine pre-AEDPA.
See Strickler,
We therefore hold that
Brady
claims are not categorically exempt from AEDPA’s gatekeeping provisions and that second-in-time
Brady
claims that do not establish materiality of the suppressed evidence are subject to dismissal under § 2255(h)(1). This conclusion is consistent
*1067
with our post-AEDPA decisions, in which we have explained that the abuse-of-the-writ doctrine “is now codified by.... AEDPA,”
see Calderon v. U.S. Dist. Ct.,
To summarize, we reject Lopez’s and amici’s argument that all second-in-time Brady claims are exempt from § 2255(h)(1). At a minimum, Brady claims that would have been barred under the abuse-of-the-writ doctrine are subject to AEDPA’s gatekeeping provisions. Under this limited holding, Lopez’s claim must satisfy § 2255(h)’s gatekeeping provisions, because she has not established materiality under Brady and her claim would therefore have been barred as an abuse of the writ. Thus, we leave open the more difficult question whether Panetti supports an exemption from § 2255(h)(l)’s gatekeeping provisions for meritorious Brady claims that would have been reviewable under the pre-AEDPA prejudice standard.
III.
Although we construe Lopez’s appeal as a request that we authorize her to file a second or successive § 2255 motion,
see Cooper,
fy § 2255(h)(l)’s higher prejudice standard.
IV.
Finally, Lopez argues the government’s conduct in failing to disclose the Palmer information was “so grossly shocking and so outrageous as to violate the universal sense of justice,”
Restrepo,
Although we find it troubling that the government’s failure to disclose the Bailey memorandum to Lopez earlier prevented her from bringing the Brady claim in her first § 2255 motion and thereby imposed on her the burdens of complying with § 2255(h), there is no evidence that the prosecutors here were pursuing a strategy to put her in such an unfavorable position. Were there such evidence, this would be a different case. Cf. United States v. Stevens, No. 08-cr-231 (D.D.C. filеd April 7, 2009) (order granting motion to set aside verdict and dismiss indictment).
V.
For the reasons stated, we VACATE the district court’s order denying Lopez’s motion and REMAND with instructions to dismiss for lack of jurisdiction. Lopez’s appeal, construed as a motion for authorization to file a second or successive application, is DENIED.
Notes
. After we published an opinion in this case, Lopez filed a petition for rehearing and rehearing en banc, and we granted the National Association of Criminal Defense Attorneys and the Federal Public Defender for the Central District of California permission to file a brief as amici curiae in support of Lopez’s petition. On October 30, 2008, we granted Lopez's petition for rehearing. We now withdraw our earlier opinion and replace it with this amended opinion.
. Section 2255(h) states:
A second or successive motion must be certified as provided in section 2244 by a panel of the appropriate court of appeаls to contain—
(1) newly discovered evidence that, if proven and viewed in light of the evidence as a whole, would be sufficient to establish by clear and convincing evidence that no reasonable factfinder would have found the movant guilty of the offense; or
(2) a new rule of constitutional law, made retroactive to cases on collateral review by the Supreme Court, that was previously unavailable.
28 U.S.C. § 2255(h).
. All statutory provisions cited in this opinion refer to Title 28 of the United States Code, unless otherwise stated.
.
Strickler
also addressed the "cause” prong of the cause-and-prejudice analysis, holding that the government's suppression of the evidence constituted sufficient cause.
See
. Although it may seem strange to determine whether a procedurally barred
Brady
claim can be considered on the merits through a cause and prejudice inquiry that necessarily involves addressing the merits of the
Brady
claim itself,
see Strickler,
. Section 2244(b) governs habeas petitions challenging state convictions under § 2254 and establishes virtually identical restrictions on “second or successive” petitions, see § 2244(b)(2)(B)(ii), with the added requirement that petitioner establish that the factual predicate of newly discovered claims could not have been discovered earlier through due diligence,
see
§ 2244(b)(2)(B)(i), which parallels the “cause” requirement for procedurally barred claims,
see Murray v. Carrier, 477
U.S. 478, 487-88,
. The government is therefore mistaken that
Burton v. Stewart,
.
Panetti
ratified the view of the majority of the circuit courts that the meaning of "second or successive” is informed by the abuse-of-the-writ doctrine.
See, e.g., United States v. Barrett,
.
Cooper v. Woodford,
. This concern is not purely hypothetical. Cf. Ciaran McEvoy, Withholding Evidence Causes Worry, Daily Journal, July 2, 2009, at 1 (describing several federal criminal prosecutions that “crumbled after it was revealed authorities failed to disclose key information that could have tainted witnesses' credibility”); Carrie Johnson, After Stevens Case, Justice Dept. Corruption Unit in Disarray, Wash. Post, June 18, 2009, at A3 (describing failures by prosecutors in Department of Justice’s Public Integrity Section to disclose evidence favorable to defendants).
. We note, however, that
Panetti
itself involved evidence that was not available when petitioner filed his first federal habeas petition,
compare
. Although it would be simpler to say it is irrelevant whether Lopez's claim is "second or successive” under AEDPA because it will ultimately fail on the merits, we may not do so. Section 2255(h) is a jurisdictional bar, and we may not assume our jurisdiction, complicated though the jurisdictional inquiry may be, in order to resolve the case on the merits, straightforward though the merits inquiry may be.
See Steel Co. v. Citizens for a Better Env't,
. Our post-AEDPA decisions have sometimes focused only on the cause inquiry when summarizing the abuse-of-the-writ doctrine.
See, e.g., Woods v. Carey,
. As the Heit case illustrates, the Bailey memorandum or its contents might not have been allowed as impeachment evidence even if the government had disclosed the Palmer information to defense counsel before trial.
. Given the narrow basis upon which we resolve this case, wе express no opinion on the Eleventh Circuit’s recent decision in
Tompkins v. Sec., Dep’t of Corrections,
