JM 9-27.520
In any case in which a defendant seeks to enter a plea of nolo contendere, the attorney for the government should make an offer of proof in open court of facts known to the government that support the conclusion that the defendant has in fact committed the offense charged. See also JM 9-16.010.
Comment. If a defendant seeks to avoid admitting guilt by offering to plead nolo contendere, the attorney for the government should, in open court, make an offer of proof of facts known to the government that support the conclusion that the defendant has, in fact, committed the offense charged. This should be done in open court even in the rare case in which the government does not oppose the entry of a nolo plea. In addition, as is the case with respect to guilty pleas, the attorney for the government should urge the court to require the defendant to admit publicly the facts underlying the criminal charges. These precautions should minimize the effectiveness of any subsequent efforts by the defendant to portray himself/herself as technically liable, but not seriously culpable.
[updated February 2018]