Witness bias at trial
Pineda-Caceres v. United States
In brief
- Where it stands
- Dismissed
Petition denied.
- What it’s about
- Jose Pineda-Caceres argued that the trial court violated his right to challenge a witness by excluding evidence intended to show that a key government witness was biased, had reason to lie, and remained loyal to MS-13.
- Who it affects
- Pineda-Caceres did not get Supreme Court review of his challenge to the excluded evidence.
Summary: written with AI from the case record.

What it's about
The Supreme Court refused to hear his case, so it did not decide that claim.
Pineda-Caceres argued the evidence would show that the government's cooperating witness was biased, had reason to lie, and remained loyal to MS-13.
Question presented
Whether the Petitioner’s rights under the Confrontation Clause were violated when the trial court excluded evidence offered to show that the government’s key cooperating witness was biased, had motive to testify falsely, and remained loyal to a criminal organization, the MS-13 Gang?
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
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.