A court-martial panel performs the function a jury performs in a civilian trial, but it is assembled differently. The convening authority selects the members, the members are part of the same military community as the parties, and each side ordinarily has only a single peremptory challenge. Those features make the process for removing biased members especially important, and military law recognizes two distinct grounds for removal: actual bias and implied bias. Implied bias is the more subtle of the two, and the criteria that govern it are designed to protect not only the fairness of the trial but the public’s confidence that the trial was fair. Understanding those criteria explains why a member who insists he can be impartial must sometimes be removed anyway.
The source of the rule
The authority to remove members for cause comes from Rule for Courts-Martial 912(f). It lists specific disqualifying circumstances and then includes a catchall, RCM 912(f)(1)(N), which requires that a member be excused whenever it appears that the member should not sit in the interest of having the court-martial free from substantial doubt as to legality, fairness, and impartiality. That catchall is the home of both actual and implied bias. The military judge rules on challenges for cause, and the judge’s handling of implied-bias challenges is central to whether a conviction will survive appeal.
Implied bias is different from actual bias
Actual bias asks a subjective question: does this particular member harbor a state of mind that will prevent the member from deciding the case fairly on the evidence and the instructions? It is assessed through the eyes of the military judge or the members, and it can turn on whether the judge believes a member’s assurance of impartiality.
Implied bias asks a different, objective question. It is bias attributed to a member as a matter of law because of the member’s situation, relationships, or circumstances, regardless of whether the member is in fact prejudiced and regardless of how sincerely the member promises to be fair. The controlling inquiry, drawn from the line of cases beginning with United States v. Clay, is whether the risk that the public will perceive that the accused received something less than a court of fair, impartial members is too high. Because the standard is objective and is measured through the eyes of the public, a member’s personal sincerity does not resolve it. A member can be …