Can trial counsel's strategic expert witness decisions constitute ineffective assistance? State v. Hamberlin Explained

In State v. Hamberlin, the Utah Court of Appeals addressed whether trial counsel’s strategic decisions regarding expert witnesses can constitute ineffective assistance of counsel, providing important guidance for criminal defense practitioners about the wide latitude afforded to tactical decisions.

Background and Facts

Alan Hamberlin drew a hunting tag for mule deer in unit 12B in Arizona, near the Utah border. After shooting what he claimed was a deer in Arizona, investigators found substantial evidence that the deer was actually shot in Utah. Wildlife officers discovered the carcass in Utah, identified the “kick-out” spot where the deer was shot (also in Utah), and found the suspected shooting location (again in Utah). Notably, officers found no deer tracks leading from Arizona into Utah, contrary to Hamberlin’s story. A jury convicted Hamberlin of wanton destruction of protected wildlife.

Key Legal Issues

On appeal, Hamberlin claimed ineffective assistance of counsel based on three alleged failures: (1) not obtaining a veterinary expert to testify about the deer’s cause of death and ability to travel after being shot; (2) not seeking a continuance when the State’s expert gave allegedly unexpected testimony; and (3) not raising a due process claim regarding the State’s failure to preserve the deer’s heart for examination.

Court’s Analysis and Holding

The Court of Appeals reviewed the ineffective assistance claims for correctness and applied the familiar Strickland two-prong test requiring both deficient performance and prejudice. The court found no deficient performance, emphasizing that counsel had retained an expert witness (a retired wildlife officer) and that choosing one expert over another is a “quintessential strategic decision.” The court noted that counsel reasonably could have avoided transforming the case into a “battle of the experts,” especially since the State had indicated it was prepared to call rebuttal experts.

Regarding prejudice, the court found the evidence of guilt overwhelming. The physical evidence showed the deer was shot entirely in Utah, with no tracks leading from Arizona. The competing hunting party heard the shot and saw Hamberlin field dressing the deer within fifteen minutes, making his account of tracking the wounded animal from Arizona implausible.

Practice Implications

This decision reinforces that strategic decisions regarding expert witnesses receive substantial deference on appeal. Courts will not second-guess counsel’s reasonable tactical choices, even when alternative experts might have been available. The decision also highlights the importance of overwhelming evidence in defeating ineffective assistance claims—even assumed deficient performance may not establish prejudice when the evidence strongly supports the verdict. Practitioners should document strategic reasons for expert witness decisions and consider whether additional experts might invite harmful rebuttal testimony.