When must Utah courts disqualify defense counsel for prior prosecution? State v. Wareham Explained

Background and Facts

In State v. Wareham, the defendant was convicted of multiple offenses arising from a 2004 domestic violence incident, including aggravated kidnapping and DUI with prior offense enhancement. The key procedural issue arose because Wareham’s appointed defense counsel, William Benge, had previously prosecuted Wareham for a 2002 DUI conviction—the same conviction being used to enhance the current DUI charge to felony level. Wareham moved to disqualify Benge based on this conflict of interest, but the trial court denied the motion and proceeded with trial.

Key Legal Issues

The primary issue was whether a conflict of interest exists when defense counsel previously prosecuted the defendant for a conviction now being used for enhancement purposes. The court also addressed whether such a conflict, if it exists, extends to all charges or only those involving the problematic prior conviction.

Court’s Analysis and Holding

The Utah Court of Appeals distinguished this case from typical conflict situations involving former defense attorneys who later prosecute their clients. Here, the roles were reversed—a former prosecutor was defending his former target. Generally, this arrangement doesn’t create prejudice because there’s no risk of misusing confidential client information. However, the court identified a limited conflict specific to the enhancement issue. Because the current DUI was enhanced based on Benge’s prior successful prosecution, zealous representation might require Benge to attack the validity of his own previous work to challenge the prior conviction’s use for enhancement. The court held this created an improper conflict requiring disqualification, but only as to the enhancement—not the underlying DUI or other charges.

Practice Implications

This decision provides important guidance for practitioners handling cases where appointed counsel has prior prosecutorial history with the defendant. The ruling is narrow—conflicts exist only when the attorney must potentially undermine their previous professional success. Defense attorneys should immediately identify any prior prosecutions of current clients, especially where those convictions may be used for enhancement. The court’s remedy was surgical: reversing only the enhancement while affirming all other convictions. Practitioners should note that delayed objections to such conflicts risk waiver, as the court emphasized Wareham raised this issue on the day of trial.