United States v. Mauricio Gonzalez
24-13030
11th Cir.Jun 2, 2025Background
- Mauricio Gonzalez, proceeding pro se, appealed the denial of his fourth and fifth motions for a new trial in a criminal case involving electronic evidence and WhatsApp messages.
- Gonzalez primarily argued violations under Brady v. Maryland and Giglio v. United States, relating to the government's alleged failure to produce certain phone records, reports, and evidence.
- He claimed that the government did not disclose key subscriber records for an iPhone XR, delayed production of the phone’s Cellebrite report, failed to produce an iPhone 7 and its data, and relied on allegedly false testimony about the phones at trial.
- Gonzalez also argued violations of Federal Rules of Evidence 1002 (original writings) and 901 (authentication of evidence) regarding the WhatsApp chats and phone evidence.
- The appellate court reviewed his Brady and Giglio claims de novo but affirmed the district court’s denial of the new trial motions, primarily on findings of insufficient showing the government possessed the allegedly favorable evidence or that any error was prejudicial.
Issues
| Issue | Gonzalez's Argument | Government's Argument | Held |
|---|---|---|---|
| Brady – Failure to disclose subscriber records | Gov’t withheld iPhone XR subscriber records showing it was not A.S.'s phone | Gov’t did not possess such records; evidence did not undermine verdict | No Brady violation; no evidence gov’t had records; affirmed |
| Brady – Delayed Cellebrite report | Late-provided report showed iPhone XR linked to area code 561, not 242 | Cellebrite report was introduced at trial as evidence | No Brady violation; report was in evidence; affirmed |
| Brady – Failure to produce iPhone 7 | Gov’t did not produce iPhone 7 or its data, which had exculpatory info | Gov’t did not possess the iPhone 7 or its data | No Brady violation; no proof possession or prejudice; affirmed |
| Giglio – Use of false testimony | Gov’t relied on area code discrepancies, should have corrected the record | Discrepancies explained by user’s switching phones and synced data | No Giglio violation; no evidence of perjury; affirmed |
| Rule 1002 & 901 – Best evidence/authentication | WhatsApp chats weren’t properly authenticated; wrong device argued as original | Proper authentication by witness testimony and forensic analysis | Evidence properly authenticated; no error; affirmed |
Key Cases Cited
- Brady v. Maryland, 373 U.S. 83 (1963) (prosecution’s suppression of material, exculpatory evidence violates due process)
- Giglio v. United States, 405 U.S. 150 (1972) (requires government to disclose evidence of false testimony/material impeachment)
- United States v. Vallejo, 297 F.3d 1154 (11th Cir. 2002) (sets standards for materiality and possession in Brady/Giglio claims)
- United States v. Caldwell, 776 F.2d 989 (11th Cir. 1985) (authentication and admissibility standards for evidence)
- United States v. Scrushy, 721 F.3d 1288 (11th Cir. 2013) (motions for new trial reviewed for abuse of discretion and are disfavored)