Docket 25-580
Whitton v. Dixon
DecidedJun 1, 2026
Per Curiamdecision
Source: CourtListener.
Court vacates ruling that used post-trial DNA evidence to deny a death row inmate's false-testimony claim
What it does
The Court vacated the Eleventh Circuit's ruling and sent the case back, holding that post-trial evidence that was never presented to the jury cannot be used to assess whether false testimony at trial influenced the jury's verdict. The standard for habeas relief — whether a constitutional error had a "substantial and injurious effect" on the jury's verdict — necessarily focuses on what the jury actually saw and heard. The Court left open whether the state court's finding of "overwhelming evidence" was reasonable based solely on the evidence presented at trial, and also left open whether the petitioner properly exhausted his claim in state court.
Who benefits
People convicted of crimes who are seeking federal habeas corpus relief (a court order challenging their imprisonment) based on claims that the prosecution knowingly used false testimony at trial.
Who is affected
State prosecutors and corrections officials defending convictions in federal habeas proceedings, who may no longer rely on evidence discovered after trial to show that false trial testimony was harmless to the jury's verdict.
Practical impact
On remand, the Eleventh Circuit must re-examine whether the Florida Supreme Court's "overwhelming evidence" finding was reasonable using only the evidence the jury saw at trial, without the benefit of the 2002 DNA retest results. The court may also address whether Whitton's claim is barred entirely because he never raised it in state court. More broadly, federal appeals courts reviewing habeas claims are now clearly on notice that post-trial evidence cannot be used to assess the impact of trial-era constitutional errors on a jury's verdict.
Majority reasoning
The Court reasoned that the Eleventh Circuit made a fundamental error by factoring in DNA test results from 2002 — a decade after Whitton's 1990s trial — when deciding whether the jury's verdict was influenced by Ozio's false testimony. Because that DNA evidence did not exist at the time of trial and was never shown to the jury, it could not have played any role in the jury's decision. The legal standard for habeas relief under Brecht v. Abrahamson asks specifically whether a constitutional error had a "substantial and injurious effect or influence in determining the jury's verdict," which means the analysis must be limited to what the jury actually considered. The Florida Supreme Court itself did not rely on the post-trial DNA results when it found the trial evidence "overwhelming," so the Eleventh Circuit should not have used that evidence when evaluating whether the Florida Supreme Court's finding was reasonable. The Court sent the case back for the Eleventh Circuit to reassess using only the evidence that was before the jury at trial.
Dissent reasoning
In dissent, Justice Thomas argued that the Eleventh Circuit's brief mention of the post-trial DNA results was, at most, a minor and inconsequential error that did not change the outcome. He contended that the Eleventh Circuit had already laid out more than enough trial evidence — Whitton's admission to being at the motel, blood matching the victim's type on his boots and car, his inability to explain the downward blood spatter, and a car wash receipt from the night of the murder — to independently support the conclusion that the false testimony made no difference to the jury. Thomas also argued that Whitton's claim should fail for a separate, threshold reason: Whitton never brought this specific claim (about Ozio's false statements regarding his own criminal record) before the state courts, meaning he failed to "exhaust" his state remedies as federal law requires before seeking federal habeas relief. Because the Eleventh Circuit could not have ruled in Whitton's favor regardless of the DNA evidence, Thomas viewed the Court's summary vacatur as correcting a technical foot fault with no real-world consequence — while the Court simultaneously declines to intervene in cases he views as more consequential errors affecting law-abiding citizens.
Constitutional question
When a federal appeals court reviews whether a state court reasonably found that a witness's false testimony did not affect a jury's verdict, may the appeals court consider DNA evidence that was discovered after the trial and never presented to the jury?