Diaz v. State
132 So. 3d 93
Fla.2013Background
- Diaz was lawfully convicted of first-degree murder and death sentence for Charles Shaw; postconviction motions under Fla. R. Crim. P. 3.850/3.851 were filed, plus a 3.203 mental retardation motion.
- Evidence at trial included a concession of premeditation for Lissa Shaw and a cold, calculated, and premeditated aggravation finding; HAC was later found to be harmless on direct appeal.
- Postconviction hearing involved extensive expert testimony on Diaz’s potential mental retardation and mitigation, along with juror-disclosure and Brady-related issues.
- The postconviction court denied all claims and Diaz timely appealed; the habeas petition asserted Ring-based and proportionality challenges, which this court deemed not cognizable in habeas petitions.
- The appellate court affirmed the postconviction rulings, denied the mental retardation finding, and rejected Diaz’s habeas petitions.
Issues
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| Whether juror Williams’ nondisclosures violated Diaz’s rights | Diaz argues juror misconduct impaired a fair trial and Brady disclosure was_REQUIRED | State contends disclosures were not material, and any nondisclosures were nonprejudicial | Claims procedurally barred; no prejudice established; Brady claim denied |
| Whether trial counsel were ineffective in guilt-phase proceedings | Diaz asserts multiple failures (e.g., to subpoena FDLE analyst, prepare Kling, object to Keown) | State contends no deficient performance or prejudice under Strickland | No relief; Strickland prejudice not shown |
| Whether Diaz is mentally retarded and thus ineligible for execution | Diaz contends IQ and adaptive-functioning deficits meet prongs of the three-part standard | State disputes subaverage functioning and onset before 18; expert credibility weighs against Diaz | Mental retardation claim rejected; three-prong standard unmet; no relief |
| Whether Diaz’s habeas petition is cognizable and claims meritless | Diaz seeks Ring-based, proportionality, and harmless-error relief | Habeas not proper vehicle for these claims; merits denied | Habeas petition denied; postconviction relief affirmed |
Key Cases Cited
- Brady v. Maryland, 373 U.S. 83 (U.S. 1963) (suppression of favorable evidence violates due process)
- Giglio v. United States, 405 U.S. 150 (U.S. 1972) (improper impeachment evidence suppression affects due process)
- Sochor v. State, 883 So.2d 766 (Fla.2004) (mixed standard for Strickland performance; defer to factual findings)
- Doorbal v. State, 983 So.2d 464 (Fla.2008) (conclusory Strickland claims insufficient; lack of specificity)
- Farina v. State, 937 So.2d 612 (Fla.2006) (cumulative evidence rule re: non-cumulative harms)
- Robinson v. State, 520 So.2d 1 (Fla.1988) (remorse as mitigating factor; lack of remorse not aggravating)
- Patton v. State, 784 So.2d 380 (Fla.2000) (concessions of guilt can be strategic and permissible)
- Lawrence v. State, 831 So.2d 121 (Fla.2002) (strategy to maintain credibility; transferred intent issues)
- Cherry v. State, 959 So.2d 702 (Fla.2007) (strict prong analysis for mental retardation; evidence credibility)
- Franqui v. State, 59 So.3d 82 (Fla.2011) (strict standard for MR; deference to trial court credibility)
- Mansfield v. State, 758 So.2d 636 (Fla.2000) (guidelines on mitigating evidence and standard of proof)