Repository Collection 03
United States v. Bagley
CASE ENTRY
Last Revised • July 10, 2026
This Source Verification Page documents the United States Supreme Court's decision in United States v. Bagley, cited in Claim II of the Supplemental Motion. The opinion defines the constitutional standard for determining the materiality of suppressed evidence under Brady v. Maryland and explains when nondisclosure undermines confidence in the outcome of a criminal trial.
Related SMAR Citation
“[See also: United States v. Bagley, 473 U.S. 667 (1985);”
Case Name
United States v. Bagley
Citation
473 U.S. 667 (1985)
Date
July 2, 1985
Verification Source
Official United States Supreme Court opinion
Source Location
United States Supreme Court Opinion
Highlighted Pages
2, 9
Referenced in the Supplemental Motion
Page 56, Paragraph: 117
✔ Original Court Order obtained and reviewed.
✔ Relevant passages highlighted.
✔ Publicly available source
✔ Included within the Source Verification Archive
May's allegation that Brady materiality depends upon whether there is a reasonable probability
that disclosure of favorable evidence would have produced a different result in the proceeding;
that a reasonable probability exists when suppression of the evidence is sufficient to undermine
confidence in the outcome of the trial; and that materiality must be evaluated in light of the effect
favorable evidence would have had upon the jury's assessment of the State's case. May relies
upon United States v. Bagley to support his claim that the cumulative suppression and exclusion of
impeachment and exculpatory evidence concerning Darrell Godfrey and other witnesses
undermines confidence in the verdict rendered against the Defendant.
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Source Status
Cited to Support
Supporting Documents
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