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Criminal ProcedureDecided June 22, 2026 Term 2025–2026No. 25-748

McCarthy v. Hernandez

Decision

The Supreme Court reversed a ruling that granted a new trial to Pedro Hernandez, holding that federal law did not require a state court to instruct a jury on legal rules regarding tainted confessions.

The Supreme Court overturned a lower court's decision to grant Pedro Hernandez a new trial for the 1979 murder of Etan Patz.

Plain-English summary generated by AI from the Court's published opinion on June 25, 2026. Always read the official opinion for the controlling text.

Key Takeaways

  • 01Federal habeas relief is only available if a state court violates a specific holding of the Supreme Court.
  • 02Rules regarding the suppression of evidence are generally for judges, not for jury instructions.
  • 03The Constitution does not require that a jury re-evaluate a judge's decision on the admissibility of a confession.

Inside the Court

Opinion by
Per Curiam

Why It Matters

The Court emphasized that federal judges have limited power to second-guess state-court convictions unless a clear federal rule was violated, which did not happen here.

Who Is Affected?

State Prisoners

It becomes more difficult for prisoners to challenge their convictions in federal court based on claims of improper jury instructions.

Federal Appellate Courts

Judges are reminded they cannot grant habeas relief based on their own interpretations of 'the thrust' of Supreme Court law if a specific holding does not exist.

What Happened?

Pedro Hernandez was convicted in 2016 for the 1979 disappearance and murder of Etan Patz after giving multiple confessions to police. Some of these confessions were made before he received Miranda warnings, while others came after he was advised of his rights. During deliberations, the jury asked the trial judge if they must disregard the later confessions if they found the first one was involuntary. The judge answered 'no,' explaining that New York law did not require the jury to decide if an earlier confession tainted a later one. Hernandez later sought a federal writ of habeas corpus, arguing this instruction violated his constitutional rights.

Legal Question

Did the New York trial court violate clearly established federal law by refusing to instruct the jury on legal standards for when an initial, unconstitutional confession taints later statements?

Why the Court Ruled This Way

In an unsigned per curiam opinion, the Court held that the Second Circuit exceeded its authority under the Antiterrorism and Effective Death Penalty Act of 1996 (AEDPA). The Court reasoned that federal law only allows habeas relief when a state court contradicts 'clearly established Federal law' as defined by Supreme Court holdings. While Justice Kennedy’s concurrence in Missouri v. Seibert addresses how judges should handle 'two-step' interrogations, it says nothing about how a jury should be instructed. Because there is no federal constitutional requirement for a jury to even consider the lawfulness of a confession—a task normally reserved for judges—the state court's instruction did not violate any established federal rule. The Court noted that state-court decisions on state-law matters are generally beyond the reach of federal habeas review.

Arguments in Favor

Supporters of the ruling would argue that federal courts must follow the strict limits of AEDPA, which prevents them from inventing new constitutional requirements for state-court jury instructions. They would emphasize that the Supreme Court has never held that the specific rules for suppressing confessions apply to the way juries evaluate evidence.

Arguments Against

Critics might argue that a jury cannot fairly evaluate whether a confession was voluntary if they are not told that an initial illegal interrogation can fundamentally taint everything a suspect says afterward. They could contend that allowing a 'no' answer to a jury's specific question about this connection undermines the due process right to a fair trial.

Timeline

  1. May 1979

    Etan Patz disappears in Manhattan

    The six-year-old went missing after leaving for his school bus, a case that remained cold for over 30 years.

  2. 2012

    Pedro Hernandez confesses to the murder

    Police revived the case after Hernandez's brother-in-law reported statements Hernandez had made about the boy's disappearance.

  3. 2016

    State trial court denies suppression motion

    The judge ruled that Hernandez's confessions were voluntary and could be used as evidence in his second trial.

  4. 2025

    Second Circuit grants habeas relief

    Federal appellate judges ruled that the trial judge's response to the jury note regarding tainted confessions was unconstitutional.

  5. June 22, 2026

    Supreme Court reverses the decision

    The Court issued a summary reversal, finding that no clearly established federal law had been violated.

What This Means for Everyday Americans

This case highlights the difference between what a judge decides and what a jury does. In the American legal system, a judge decides if evidence is 'legal' enough to be shown in court. Once the judge lets it in, the jury's job is to decide if that evidence is believable. This ruling confirms that even if a jury has questions about the legal technicalities of how a confession was obtained, the Constitution doesn't always require the judge to give them a mini-law lesson on those complexities.

What Happens Next?

The case will return to the lower courts with the instruction that Hernandez is not entitled to habeas relief on the jury instruction issue. His original conviction and sentence of 25-years-to-life will remain in place.

Explain It Like I'm 12

Pedro Hernandez confessed to a very old crime, but his lawyers said his confessions shouldn't have been used because of how the police questioned him. At his trial, the jury asked the judge a question about whether an early mistake by the police meant they had to ignore all his later confessions. The judge said 'no' because New York law says only judges, not juries, worry about that specific legal rule. A lower federal court thought the judge was wrong and ordered a new trial, but the Supreme Court stepped in. The Supreme Court said that since there is no national rule saying juries must be taught this specific lesson, the original conviction should stand.

Broader Context

The decision reaffirms the high bar set by AEDPA, which requires state prisoners to prove a state court's error was so 'extreme' that no reasonable judge could agree with it. It also clarifies that precedents like Missouri v. Seibert serve as rules for judges regarding the admissibility of evidence, rather than rules for how juries must be coached to think.

Key Players

  • Pedro Hernandez

    The respondent who was convicted of the 1979 kidnapping and murder of Etan Patz.

  • Kevin McCarthy

    The Superintendent of the Elmira Correctional Facility who petitioned the Court to uphold the conviction.

  • U.S. Court of Appeals for the Second Circuit

    The lower court that had initially granted Hernandez a new trial.