OCTOBER TERM 2025 · DECIDED JUNE 22, 2026 · 6–3

608 U. S. ____ · No. 25-748

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McCarthy v. Hernandez

Reversed and remandedFinal ruling
habeas corpusMiranda rightscriminal confessionsEtan Patz casefederal courts and states

Per curiam

The Supreme Court reversed a Second Circuit ruling that had granted habeas relief to Pedro Hernandez, convicted in the disappearance and killing of six-year-old Etan Patz, finding that no clearly established federal law required the trial judge to instruct the jury on the case Missouri v. Seibert.

The decision reinforces tight limits on when federal courts may override state criminal convictions through habeas corpus, reminding lower courts that they may only step in when a state court's decision plainly contradicts a specific Supreme Court holding — not when a federal judge merely disagrees with how a state handled its own procedures.

But Seibert said nothing about jury instructions.
Justice Per Curiam

The Court's central reason for rejecting the habeas claim based on the Seibert case.

How it got here: New York's courts upheld the conviction; a federal district court denied habeas relief; the Second Circuit reversed, granting habeas relief; the State sought Supreme Court review.

The Case in Depth

What happened

Pedro Hernandez confessed repeatedly, starting in 2012, to the 1979 disappearance and killing of six-year-old Etan Patz, a case that had gone unsolved for decades. After a hung jury in his first trial, a second jury convicted him of kidnapping and felony murder based partly on his confessions, made both before and after he received Miranda warnings, to police, family members, and psychiatrists.

The question before the Court

Could a federal appeals court order a new trial for Pedro Hernandez because a New York judge's answer to a jury note didn't explain a Supreme Court Justice's separate opinion on confessions?

Why it matters

The ruling keeps Hernandez's conviction in place for now and signals to federal appeals courts nationwide that they cannot use habeas corpus to second-guess state trial rulings unless a specific Supreme Court holding was violated. It preserves the difficulty state prisoners face in getting federal courts to overturn their convictions under the federal habeas statute.

What changes now

The case returns to the Second Circuit for further proceedings consistent with the Supreme Court's opinion, which will likely mean denying Hernandez's habeas application on this claim. This is a final ruling on the legal question presented, though it does not resolve every claim Hernandez has raised, and further litigation over his conviction may continue in the lower courts.

What this does not decide

The Court did not decide whether Justice Kennedy's concurring opinion in Missouri v. Seibert is actually the controlling rule from that case under the Marks doctrine, an issue on which the circuits are split. It assumed this only for the sake of argument.

How the Court got there

The legal reasoning, step by step

  1. The Court applied AEDPA's strict habeas standard: relief is available only when a state court's decision was 'contrary to' or involved an 'unreasonable application' of a holding this Court has actually issued, not merely a lower court's extension of that holding.
  2. The Court explained that the Federal Constitution, unlike New York law, does not require a jury (as opposed to a judge) to separately evaluate whether a confession was voluntary or lawfully obtained once a judge has already admitted it into evidence.
  3. Assuming without deciding that Justice Kennedy's separate opinion in Missouri v. Seibert states the controlling rule about two-step interrogation tactics, the Court found that opinion addressed only a judge's decision on whether to admit a confession, not what a jury must be told about it.
  4. The Court concluded that due process does not require a trial judge to instruct a jury on an issue the jury has no role in deciding, and that New York's own courts had already determined state law gives juries no such role.
  5. Because no Supreme Court holding clearly required the jury instruction Hernandez sought, the Court held the Second Circuit had no basis under the federal habeas statute to grant relief.

Doctrinal impact

Laws and provisions at issue

28 U.S.C. § 2254(d)(1)

Federal habeas law limiting when courts can overturn state convictions based on federal law violations.

Due Process Clause

Constitutional guarantee of fair criminal trial procedures.

Cases affected by this decision

Distinguishes Missouri v. Seibert (542 U. S. 600)

The Court said Seibert addressed only judges' suppression rulings, not what juries must be told about confessions.

Reaffirms Estelle v. McGuire (502 U. S. 62)

The Court relied on it to bar federal habeas courts from second-guessing state-law rulings.

Supreme Court Opinion

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McCarthy v. Hernandez | SCOTUS Reporter