A Florida jury convicted Gary Whitton of stabbing his friend to death. The Supreme Court of Florida rejected his motion for a new trial because of the “overwhelming evidence against” him. Whitton v. State, 161 So. 3d 314, 334 (2014) (per curiam). When Whitton challenged his conviction in federal court, the District Court denied his habeas petition, and the Eleventh Circuit affirmed in a 64-page opinion. This Court now vacates the Eleventh Circuit’s judgment because of one-and-a-half sentences in its opinion. In rejecting one of Whitton’s claims—which would fail on other grounds anyway—the Eleventh Circuit mentioned a fact that was notable but certainly not dispositive to its analysis: DNA testing had since further confirmed that Whitton is guilty. Because the Eleventh Circuit mentioned that fact, this Court summarily vacates. I respectfully dissent.
I
A
On the night of October 9, 1990, Gary Whitton murdered his friend James Maulden. Maulden, who was intoxicated, asked Whitton to drive him to a bank. Whitton helped Maulden withdraw his account’s entire balance, $1,135.88, and drove them to a motel. At check-in, Whitton gave the motel clerk a false license plate number for his car, but the clerk noticed that Whitton was lying and recorded the correct number. Because Maulden was still intoxicated when they arrived, Whitton helped him from the car to his room. The next morning, the police found Maulden dead in his room. He had suffered a fractured skull, three fatal stab wounds to his chest, and stab wounds to his shoulder, cheek, neck, scalp, and back. Blood had sprayed all over the floor, furniture, walls, and ceiling.
The license plate from the car at the motel led the police to Whitton. He told the police that he had dropped Maulden off at the motel, but he initially denied having returned later that night. He eventually admitted that this story was a lie and that he had returned to the room, but he then claimed that Maulden was already dead when he arrived. The police arrested Whitton and seized, among other things, his boots.
Whitton’s boots had blood spatter in them consistent with a stabbing that created “‘forceful bloodshed.’” App. to Pet. for Cert. 4a; see Tr. of State Court Proceedings in Whitton v. Secretary, Fla. Dept. of Corrections, No. 4:15–cv–00200 (ND Fla.), ECF Doc. 73–2, p. 927. Whitton hypothesized that the blood had seeped upwards into his socks through the bottom of his boots when he happened upon Maulden’s already-dead body. But, the blood spatter showed that Maulden was again lying: The blood had flowed downward. See ibid.; App. to Pet. for Cert. 4a.1 At trial, the State introduced even more evidence against Whitton. At 2:37 a.m. on the night of Maulden’s murder, Whitton purchased a car wash ticket. The day after the murder, Whitton paid off hundreds of dollars’ worth of debt. And, two witnesses—Jake Ozio and Kenneth McCullough— testified that Whitton confessed to the murder. When Ozio gave that testimony, he denied that he had been arrested before.
The evidence at trial also included the blood spatter that the police discovered. The blood found in Whitton’s boots matched Maulden’s blood type but not Whitton’s. Whitton’s car also contained blood that matched Maulden’s blood type. But, Whitton called a DNA analyst who said that the blood on the boots did not match Maulden’s DNA. Whitton took the stand in his own defense. He testified that he gave a false license plate number to the motel because he was worried about being held liable for any damage that Maulden caused. He testified that he did not know how much money Maulden had withdrawn and that he received $200 from someone else around the same time. He testified that he returned to the motel late that night because a friend had told him that Maulden’s mother was looking for him. And, he testified that he fled the scene after only a minute, without calling the police, because he was in shock and did not want to get involved. As to the blood in his boots, Whitton continued to claim that he “assume[d] that it would have gotten on the bottom of [the boots] through the holes in the bottom of them.” ECF Doc. 73–3, p. 127.
Whitton’s story to the jury quickly fell apart. When the prosecutor asked why the blood had flowed downward in the boots, Whitton testified, “I don’t know how it got there.” Id., at 128. When the prosecutor asked about the blood spots in his car, Whitton testified that they “could have been there when [he] bought the car . . . I have no idea.” Id., at 141. When the prosecutor asked about the bank withdrawal, Whitton admitted that he had signed Maulden’s form to withdraw money and that he knew that Maulden was withdrawing the entire account. And, although Whit- ton testified that he had called Maulden’s mother repeatedly, she testified at trial that she was at home the entire afternoon and evening and never received a call from Whit- ton.
The jury convicted Whitton of murdering and robbing Maulden. It unanimously recommended a death sentence. The trial court sentenced Whitton to death, and the Supreme Court of Florida affirmed. Whitton v. State, 649 So. 2d 861 (1994) (per curiam).
In 2002, the State retested the blood on Whitton’s boots and confirmed that it belonged to Maulden. Contrary to Whitton’s DNA analyst’s testimony at trial, the blood in the right boot matched the “‘DNA profile of James Maulden.’” App. to Pet. for Cert. 6a, n. 5. The testing also identified Maulden as a DNA contributor to blood found on the left boot.
B
Whitton filed a motion for postconviction relief in state court in 1997. As relevant here, Whitton brought a claim under Giglio v. United States, 405 U. S. 150 (1972). To succeed on a Giglio claim, a defendant must prove that the prosecutor presented false testimony against him; that the prosecutor knew that the testimony was false; and that there is a “reasonable likelihood” that the false testimony affected the verdict. Id., at 154 (internal quotation marks omitted). Whitton’s Giglio claim was based on testimony about his confession to Ozio. Whitton argued that Ozio had falsely testified “that Whitton confessed to him in prison”; that the State knew that the testimony was false; and that the false testimony was material. Whitton, 161 So. 3d, at 323. He did not make any claims about Ozio’s description of his own criminal record.
The Supreme Court of Florida denied Whitton’s motion for postconviction relief. It concluded that Whitton had failed to show either that Ozio’s testimony about Whitton’s confession was false or that the prosecutor knew that it was false. Id., at 323–324. The court also rejected a separate claim regarding other testimony. In so doing, the court relied on the “overwhelming evidence against Whitton” presented at trial even apart from his confessions. Id., at 334. It did not rely on the DNA test results from 2002 confirming that the blood on Whitton’s boot was Maulden’s.
C
Whitton then petitioned a federal court for a writ of habeas corpus. A state prisoner generally cannot receive federal habeas relief based on claims that he did not present in state court. Instead, before bringing a claim in habeas, he must have “exhausted the remedies available” in state court. 28 U. S. C. §2254(b)(1)(A). And, for a “claim that was adjudicated on the merits in State court proceedings,” the federal court may not grant relief unless the state-court decision “was contrary to, or involved an unreasonable application of, clearly established Federal law” or “was based on an unreasonable determination of the facts.” §2254(d). Under these strict standards, a federal court cannot grant habeas relief unless the state court “blundered so badly that every fairminded jurist would disagree with the decision.” Klein v. Martin, 607 U. S. 213, 221 (2026) (per curiam) (internal quotation marks and alteration omitted). As relevant here, Whitton again claimed that Ozio falsely testified that Whitton had confessed to him. The District Court allowed discovery and held an evidentiary hearing. Ozio testified that he had not actually heard Whitton confess. He also clarified in his May 17, 2021, deposition that, although he had testified that he had not previously been arrested, he did have a juvenile record. Ozio then testified to the same effect at the evidentiary hearing.
In response to this clarification regarding Ozio’s juvenile record, Whitton did not bring a new claim in state court based on Ozio’s inconsistent statements. He instead added a new federal habeas claim, arguing that Ozio’s testimony about his prior record also entitled him to a new trial under Giglio. Whitton did not address his failure to present this claim to the state courts, nor did he request a stay of federal proceedings to rectify it. The District Court denied Whitton’s federal habeas petition.
The Eleventh Circuit affirmed. In federal habeas proceedings, when a prisoner raises an unexhausted claim, the court cannot enter relief for the prisoner, but it can rule on the merits against the prisoner without addressing exhaustion. See §2254(b)(2). The Eleventh Circuit exercised that discretion and rejected Whitton’s new Giglio claim on the merits. See App. to Pet. for Cert. 35a, n. 10. That claim failed, the Eleventh Circuit held, because the Supreme Court of Florida had reasonably concluded that the State had marshaled “overwhelming evidence” of Whitton’s guilt apart from Ozio’s testimony. Id., at 36a–37a. That conclusion was reasonable, the Eleventh Circuit continued, for several reasons: “[T]he motel clerk saw Whitton’s car parked at the motel, and Whitton admitted he was at the motel; Whitton’s boots and his car were stained with blood that, after later retesting, matched Maulden’s DNA; the blood stains on and inside Whitton’s boots are consistent with a ‘stabbing or a beating’; Whitton could not explain the downward blood spatter on the inside of his boots; and Whitton’s car contained a power and gas receipt and a car wash ticket for 2:37 a.m. October 10, 1990, the night of the murder.” Id., at 40a.
Two pages later, the Eleventh Circuit addressed Whitton’s argument that “the DNA evidence” at trial supported him. Id., at 42a. Relying on evidence presented to the jury, the Eleventh Circuit explained why a fairminded jurist may not be persuaded. The court cited evidence that traces of blood can be washed off and that Whitton had purchased a car wash ticket the night of the murder and told an officer that he had attempted to wash his boots. The Eleventh Circuit then added a single additional aside on a point that some would find notable in this context: “Also, after retesting the DNA on Whitton’s boots, the State confirmed that the inside of Whitton’s right boot contained blood from a ‘mixture of two or more individuals,’ with the ‘major donor’ matching ‘the DNA profile of James Maulden.’” Ibid. (citations omitted). The Eleventh Circuit did not claim to ascribe any particular legal weight to this fact. Whitton petitioned for a writ of certiorari, claiming that the Eleventh Circuit erred in its analysis of his claim based on Ozio’s testimony about his criminal record. He asked the Court to resolve a purported Circuit split over whether courts can assess prejudice based on evidence that the State discovered only after trial.
The Court summarily vacates the judgment below because of the one-and-a-half sentences in the Eleventh Circuit’s opinion briefly mentioning the 2002 DNA test results.
II
I would not grant Whitton such relief. If the Eleventh Circuit erred at all in mentioning the DNA test results, it was harmless for at least two reasons. First, the court thoroughly examined the overwhelming evidence against Whit- ton, which was more than sufficient to justify its decision. Second, Whitton had not even exhausted his claim in state court, so the Eleventh Circuit could not have ruled for him anyway. Because we do not “tower above” lower courts as an “impregnable citade[l] of technicality,” we should not have exercised our summary powers to vacate here. Kottea kos v. United States, 328 U. S. 750, 759 (1946) (internal quotation marks omitted).
First, the evidence against Whitton at trial more than justified the Eleventh Circuit’s decision.
The Supreme Court of Florida concluded that, apart from Ozio’s testimony and the 2002 test results, the State had presented “overwhelming evidence against Whitton.” Whitton, 161 So. 3d, at 334. That conclusion, all agree, must be reviewed by the federal habeas court deferentially under §2254(d). Only if the Supreme Court of Florida’s conclusion “was so lacking in justification that there was an error . . . beyond any possibility for fairminded disagreement” could the Eleventh Circuit have granted relief on Whitton’s Giglio claim, which required a showing that Ozio’s allegedly false testimony made a difference in his trial. Davis v. Ayala, 576 U. S. 257, 269–270 (2015) (internal quotation marks omitted).
The Eleventh Circuit made clear that the testimony made no difference even before its brief mention of the DNA evidence. As the Eleventh Circuit explained, Whitton admitted to being at the motel; blood that matched Maulden’s blood type had stained Whitton’s boots and car; “Whitton could not explain the downward blood spatter on the inside of his boots; and Whitton’s car contained a power and gas receipt and a car wash ticket for 2:37 a.m. October 10, 1990, the night of the murder.” App. to Pet. for Cert. 40a. That analysis more than establishes all that is necessary to resolve this claim: The Supreme Court of Florida’s conclusion that the evidence presented at trial against Whitton was overwhelming was not “so lacking in justification” as to “preclud[e] even the possibility for fairminded dispute.” Klein, 607 U. S., at 221 (internal quotation marks omitted). Second, the Eleventh Circuit was not even allowed to rule for Whitton regardless of the evidence because he failed to exhaust this claim before the state courts. Federal courts cannot grant habeas relief, no matter how meritorious the underlying claim, unless “the applicant has exhausted the remedies available in” state court, if such remedies are available and adequate. §2254(b)(1)(A). Whitton does not deny that state-court remedies were available. Yet, he never sought state remedies for his claim based on Ozio’s characterization of his criminal record.
This exhaustion failure barred federal habeas relief, but Whitton never addressed it in the District Court. Nor did he ask for a stay of federal proceedings to enable him to cure the problem. Cf. Rhines v. Weber, 544 U. S. 269, 276–278 (2005). If he asked for a stay now, it would be an abuse of discretion to grant it—Whitton discovered the factual basis for this claim in May 2021, at the latest, and he has still not exhausted his claim in state court, so it is likely too late for him to even attempt to do so. See Mungin v. State, 320 So. 3d 624, 625–626 (Fla. 2020) (per curiam). In such circumstances, federal courts can and do simply deny the habeas claim. See McBride v. Skipper, 76 F. 4th 509, 512–513 (CA6 2023) (federal court need not consider a stay when petitioner does not ask for one); Banks v. Allison, 140 F. 4th 1181, 1185–1189 (CA9 2025) (federal court need not consider a stay after petitioner fails to pursue state remedies for over a year while federal petition is pending); Sears v. Warden, GDCP 73 F. 4th 1269, 1306 (CA11 2023) (per cu riam) (federal court need not consider a stay when petitioner’s claim would be procedurally barred in state court).2 We do not intervene based on “technicalit[ies]” that do not “really affec[t]” the outcome of a case. Kotteakos, 328 U. S., at 759, 761. Instead, on a petition for a “writ of certiorari in any case,” this Court must ignore “errors or defects which do not affect the substantial rights of the parties.” 28 U. S. C. §2111; see United States v. Lane, 474 U. S. 438, 444 (1986). This Court therefore, in most cases, declines to exercise its certiorari authority when it is “evident that the resolution of the conflict could not change the result reached below.” S. Shapiro, K. Geller, T. Bishop, E. Hart- nett, & D. Himmelfarb, Supreme Court Practice 4–18 (11th ed. 2019). Yet, the Court today elects to intervene in that exact posture.
Fortunately, though, the Court’s decision will have no real-world effect. The Eleventh Circuit can reissue a virtually identical opinion after deleting one sentence on page 42 and one part of one sentence on page 40, where the Eleventh Circuit discussed the 2002 DNA tests. See App. to Pet. for Cert. 40a, 42a. Or it can deny relief because Whitton failed to exhaust a claim based on Ozio’s criminal record. Or it might consider using its “equitable discretion” to deny relief because of the conclusive evidence of Whitton’s guilt, including the DNA test results. Edwards v. Vannoy, 593 U. S. 259, 289 (2021) (GORSUCH, J., concurring); see Shinn v. Martinez Ramirez, 596 U. S. 366, 377 (2022).
III
This Court has increasingly granted summary relief in certain cases based on lower court errors that seemingly had no effect on the outcome of the case. See Pitts v. Mis sissippi, 607 U. S. 1 (2025) (per curiam) (granting summary vacatur for man who sexually abused his daughter after likely harmless trial error); Doe v. Dynamic Physical Ther apy, LLC, 607 U. S. 11 (2025) (per curiam) (granting summary vacatur after likely harmless state intermediate appellate court error). It would be one thing if this practice reflected the Court’s consistent commitment to correcting legal error in all cases. But, in reality, this Court routinely declines to provide relief to law-abiding Americans when it would actually matter, even after lower courts conspicuously flout this Court’s precedents in ruling against them.
A
Consider Boston Parent Coalition for Academic Excel lence Corp. v. The School Committee, 604 U. S. ___ (2024). In that case, the Boston School Committee implemented an admissions policy to reduce the number of white and Asian students at their elite exam schools. The committee made its racist intent clear. One member said that she was “‘[s]ick of . . . whites,’” while another mocked the names of Asian students after forgetting to mute himself on a Zoom hearing. Id., at ___ (ALITO, J., dissenting from denial of certiorari) (slip op., at 2). Despite this clearly unconstitutional race discrimination, the First Circuit ruled against parents who had challenged the affirmative-action policy. And, in a near-identical case, the Fourth Circuit did the same. Co alition for TJ v. Fairfax County School Board, 601 U. S. ___ (2024). Yet, even when presented with multiple opportunities to vindicate the rights of families to pursue education for their children on color-blind terms, this Court “refused to correct a glaring constitutional error.” Boston Parent Co alition, 604 U. S., at ___ (ALITO, J., dissenting) (slip op., at 5); see also Coalition for TJ, 601 U. S., at ___–___ (same) (slip op., at 9–10).
B
Or consider Beck v. United States, 607 U. S. ___ (2025). In that case, Air Force Staff Sergeant Cameron Beck drove home to lunch with his family in Missouri and was killed in a car crash by a negligent driver. Because the driver was a federal employee and Beck was serving in the military, the lower courts had denied Beck’s widow any relief. They did so based on an atextual exception to liability of this Court’s creation, which has been widely acknowledged as “difficult . . . to justify.” Id., at ___ (SOTOMAYOR, J., statement respecting denial of certiorari) (slip op., at 1); see id., at ___– ___ (THOMAS, J., dissenting from denial of certiorari) (slip op., at 3–5). Even worse, our own precedent had squarely held that this exception did not apply to a case like Beck’s. See Brooks v. United States, 337 U. S. 49, 50–51 (1949). Yet, this Court, as in many similar cases, refused to even take Beck’s widow’s case. See, e.g., Carter v. United States, 604 U. S. ___ (2025) (THOMAS, J., dissenting from denial of certiorari); Clendening v. United States, 598 U. S. ___ (2022) (same); Doe v. United States, 593 U. S. ___ (2021) (same); Lanus v. United States, 570 U. S. 932 (2013) (same).
C
Or consider Speech First, Inc. v. Whitten, 604 U. S. ___ (2025). In that case, the Court declined to hear a student association’s challenge to Indiana University’s “bias response team,” which fields anonymous complaints about student speech and considers whether to refer the accused to campus offices or the police. Id., at ___–___ (THOMAS, J., dissenting from denial of certiorari) (slip op., at 1–2). “[O]ver 450 universities” reportedly had “similar bias-reporting schemes.” Speech First, Inc. v. Sands, 601 U. S. ___, ___ (2024) (THOMAS, J., dissenting) (slip op., at 2). Under these university policies, an untold number of American students with “unpopular” views had to “self-censor their discussion of these views out of fear that others will likely report them” to the bias response team. Speech First, Inc. v. Whitten, 604 U. S., at ___ (slip op., at 2) (internal quotation marks omitted). Lower courts had held that these students did not even have standing to bring a lawsuit in federal court, in plain tension with this Court’s precedents. See Laird v. Tatum, 408 U. S. 1, 11 (1972). Yet, the Court refused to hear these students’ case.
* * * It is unfortunate that the Court chose to intervene at the request of a convicted murderer to correct the Eleventh Circuit’s inconsequential foot fault. What makes it even worse is that the Court does so even while it refuses to correct far more consequential errors for law-abiding citizens, such as the discriminated-against families in Boston, Staff Sergeant Beck’s widow, and the students seeking to challenge university censorship.
I respectfully dissent.