US v. Siang

Summary

Que Siang was convicted of unlawful possession of opium after being arrested in Occidental Negros in 1914. A glass tube with opium preparation was allegedly found in his possession during a search warrant execution. The case involved significant evidentiary issues when the original tube was substituted with one containing molasses before trial. Despite this substitution and credibility questions regarding the arresting officer who allegedly demanded bribes, the Supreme Court affirmed the conviction. The Court relied on testimony from the justice of the peace and municipal officials who had examined the original substance and identified it as opium. The decision established that evidence substitution does not necessarily invalidate a conviction when other credible evidence supports the original findings. The case highlights early drug enforcement challenges and procedural safeguards in criminal evidence handling.