State v. Yuen
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The case involves a motor vehicle collision near the entrance to Hickam Air Force Base in Honolulu, where Charles Yuen allegedly rear-ended another car. Military police (MPs) arrived at the scene, identified Yuen as the driver, and conducted field sobriety tests and a preliminary alcohol screening. They then detained Yuen until Honolulu Police Department (HPD) officers arrived, who conducted their own tests and arrested Yuen for operating a vehicle under the influence of an intoxicant (OVUII).
The District Court of the First Circuit of the State of Hawai'i adjudicated Yuen guilty of OVUII based on the testimony of HPD officers. The Intermediate Court of Appeals (ICA) affirmed the conviction, finding that there was substantial evidence to support it. However, the ICA did not find sufficient evidence in the record to establish ineffective assistance of counsel due to the failure to file a motion to suppress evidence based on a violation of the Posse Comitatus Act (PCA).
The Supreme Court of the State of Hawai'i reviewed the case and held that Yuen's trial counsel was ineffective for not filing a motion to suppress evidence obtained by the MPs, which could have been considered a violation of the PCA. The court found that this failure constituted ineffective assistance of counsel as it potentially impaired a meritorious defense. The court also agreed with the ICA that there was substantial evidence to support Yuen's conviction. Consequently, the Supreme Court vacated Yuen's OVUII conviction and remanded the case to the district court for further proceedings consistent with its opinion.
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