Docket 25-748
McCarthy v. Hernandez
DecidedJun 22, 2026
6-3decision
Source: CourtListener.
Court reverses habeas relief granted to convicted murderer over jury instruction on confession attenuation
What it does
The Court holds that a federal habeas court exceeded its limited authority under the Antiterrorism and Effective Death Penalty Act (AEDPA) by granting relief based on a state trial judge's response to a jury note, because no Supreme Court holding required a jury to be instructed on whether an earlier unwarned confession tainted later confessions. It reverses the Second Circuit's grant of habeas relief and remands the case.
Who benefits
State prosecutors and correctional officials defending convictions against federal habeas challenges, and states generally in preserving the limited scope of federal habeas review over state criminal convictions.
Who is affected
Pedro Hernandez, the individual convicted of murder whose habeas relief was reversed, and more broadly state prisoners seeking federal habeas relief based on claims that state courts misapplied Supreme Court precedent to jury instructions or notes.
Practical impact
Hernandez's murder conviction is reinstated pending further proceedings, and he will not receive a new trial or release on the grounds previously ordered by the Second Circuit. The decision reinforces strict limits on federal courts' ability to grant habeas relief to state prisoners, particularly discouraging lower federal courts from extending Supreme Court precedents like Seibert beyond their original procedural context (judicial suppression rulings) to new contexts like jury instructions.
Majority reasoning
The Court reasoned that AEDPA only allows federal habeas relief when a state court's decision was contrary to or unreasonably applied clearly established federal law as set by actual Supreme Court holdings, not lower court extensions of those holdings. It found that the Federal Constitution does not require both judge and jury to independently assess the admissibility or voluntariness of a confession once a judge has ruled it admissible, citing Lego v. Twomey. Even assuming Justice Kennedy's concurrence in Missouri v. Seibert stated a controlling rule, that rule addressed only a judge's suppression ruling, not a jury's assessment of whether one confession taints later confessions, and the Court has never applied Seibert in any other procedural context. Because New York state courts held that state law does not require juries to decide attenuation, and federal habeas courts cannot second-guess state-law interpretations, no clearly established federal law was violated by the trial judge's response to the jury's note. The Court concluded the Second Circuit's opinion reflected doubts about the reliability of Hernandez's confessions but such evidentiary evaluation is not a basis for habeas relief under AEDPA.
Constitutional question
Did the state appellate court's approval of a trial judge's response to a jury note about "tainted" confessions violate clearly established federal law under AEDPA, specifically the rule from Missouri v. Seibert regarding two-step interrogation tactics?