Prosecutors' duty to share evidence
Hahn v. United States
In brief
- Where it stands
- Dismissed
Petition denied.
- What it’s about
- Marcus Hahn asked the Supreme Court to review the Tenth Circuit’s handling of his claims about withheld evidence, the standards for challenging those claims, and whether he could add evidence to the record.
- Who it affects
- Hahn did not receive Supreme Court review of these claims, and the denial did not resolve whether his arguments were correct.
Summary: written with AI from the case record.
What it's about
The Court refused to hear the case (denied review) and did not decide those issues.
Hahn’s petition raised questions about permission to appeal, prosecutors’ evidence-disclosure duties, how courts assess withheld-evidence claims, and adding new material to the record.
Question presented
1. Whether a Court of Appeals Contravenes *Miller-El v. Cockrell*, 537 U.S. 322 (2003) and *Buck v. Davis*, 580 U.S. 100 (2017) When it Denies a Certificate of Appealability in the Vocabulary of Debatability, But Reaches That Result Only by Resolving the Merits of the Underlying Constitutional Claims? 2. Whether the Prosecution's Duty to Disclose Material Exculpatory Evidence Under *Brady v. Maryland*, 373 U.S. 83 (1963) Extends to Pretrial Suppression Hearings? 3. Whether a Court Applies an Unconstitutionally Heightened Standard by Requiring a Movant Under 28 U.S.C. § 2255 to Establish the Elements of a *Brady* Claim by a Preponderance of the Evidence, and by Failing to Weigh the Cumulative Effect of the Withheld Evidence Together With the Balance of the Record, as *Kyles v. Whitley*, 514 U.S. 419 (1995) Requires? 4. Whether a District Court Abuses its Discretion by Denying a Motion to Expand the Record With Newly Obtained Material Evidence of a *Brady* Violation Solely Because the Motion was Filed After the Magistrate Judge's Report and Recommendation, Where the Movant Establishes Objective Cause for the Timing?
Documents
Docket activity
New analysis added
AI analysis generated: Case Briefing
AI analysis generated: Decision Record
Case data updated: summary, question_presented, generation_metadata
Case data updated: question_presented, extraction_metadata
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Brief added: Petition
More questions
- What issues did Hahn ask the Court to review?
- He asked whether the appeals court used the right standard in denying permission to appeal, whether prosecutors must disclose favorable evidence at a pretrial hearing to exclude evidence, and how courts should assess withheld-evidence claims and requests to add new evidence.
Sources
Primary materials plus reporting. Best-effort analysis: this explainer relies on a mix of primary materials and trusted secondary sources. Official filings and opinions remain authoritative.