The Opinions of Justice Amy Coney Barrett

October Term 2025

Opinions authored by Justice Barrett during the term that began October 6, 2025.

  1. Berk v. Choy

    Majority Opinion Civil Procedure

    Question Presented: Whether Delaware's "affidavit of merit" requirement for medical-malpractice suits—mandating that a qualified medical expert's affidavit accompany the complaint—applies in federal court when the suit is brought under diversity jurisdiction.

    Holding: The Delaware affidavit-of-merit requirement does not apply in federal court because it conflicts with a valid Federal Rule of Civil Procedure. Speaking for seven other justices, Justice Barrett wrote that the Court could bypass "Erie's murky waters" because, here, Federal Rule of Civil Procedure 8 directly displaces the Deleware state law in question.

Concurring Opinions

Concurrences authored by Justice Barrett during October Term 2025.

  1. Bost v. Illinois Bd. of Elections

    Concurrence Justiciability

    Question Presented: Whether a candidate for federal office has Article III standing to challenge a state's rules for counting mail-in ballots—specifically, Illinois's requirement that ballots postmarked by Election Day but received up to two weeks later must be counted.

    Holding: A candidate does have standing to challenge the rules governing the counting of votes in their own election.

    Barrett's View: Justice Barrett (joined by Justice Kagan) would have held that Congressman Bost had standing because he has sustained a traditional pocketbook injury, not because of his status as a candidate for political office. Because, in her view, the majority created a "bespoke standing rule for candidates," she concurred only in the judgment.

  2. Learning Resources, Inc. v. Trump

    Concurrence Statutory Interpretation

    Question Presented: Whether IEEPA authorizes the President to impose tariffs.

    Holding: IEEPA does not authorize the President to impose tariffs.

    Barrett's View: Justice Barrett joined the majority in full but wrote separately to respond to Justice Gorsuch's concurring opinion advancing his view of the major questions doctrine. She wrote that “while the major questions doctrine has an impressive pedigree as an interpretive principle, this Court has not (yet, anyway) embraced it as a strong-form rule that imposes a ‘clarity tax’ on Congress.”