Former Rules of Professional Conduct: Rule 3.8--Special Responsibilities of a Prosecutor
This Rule governed the practice of law in the District of Columbia from January 1, 1991, through January 31, 2007. As of February 1, 2007, the Amended Rules took effect.The prosecutor in a criminal case shall not:
(a) In exercising discretion to investigate or to prosecute, improperly favor or invidiously discriminate against any person;
(b) File in court or maintain a charge that the prosecutor knows is not supported by probable cause;
(c) Prosecute to trial a charge that the prosecutor knows is not supported by evidence sufficient to establish a prima facie showing of guilt;
(d) Intentionally avoid pursuit of evidence or information because it may damage the prosecution’s case or aid the defense;
(e) Intentionally fail to disclose to the defense, upon request and at a time when use by the defense is reasonably feasible, any evidence or information that the prosecutor knows or reasonably should know tends to negate the guilt of the accused or to mitigate the offense, or in connection with sentencing, intentionally fail to disclose to the defense upon request any unprivileged mitigating information known to the prosecutor and not reasonably available to the defense, except when the prosecutor is relieved of this responsibility by a protective order of the tribunal;
(f) Except for statements which are necessary to inform the public of the nature and extent of the prosecutor’s action and which serve a legitimate law enforcement purpose, make extrajudicial comments which serve to heighten condemnation of the accused;
(g) In presenting a case to a grand jury, intentionally interfere with the independence of the grand jury, preempt a function of the grand jury, abuse the processes of the grand jury, or fail to bring to the attention of the grand jury material facts tending substantially to negate the existence of probable cause; or
(h) Peremptorily strike jurors on grounds of race, religion, national or ethnic background, or sex.
 A prosecutor has the responsibility of a minister of justice and not simply that of an advocate. This responsibility carries with it specific obligations to see that the defendant is accorded procedural justice and that guilt is decided upon the basis of sufficient evidence. Precisely how far the prosecutor is required to go in this direction is a matter of debate and varies in different jurisdictions. Many jurisdictions have adopted the ABA Standards of Criminal Justice Relating to Prosecution Function, which in turn are the product of prolonged and careful deliberation by lawyers experienced in both criminal prosecution and defense. This Rule is intended to be a distillation of some, but not all, of the professional obligations imposed on prosecutors by applicable law. The Rule, however, is not intended either to restrict or to expand the obligations of prosecutors derived from the United States Constitution, federal or District of Columbia statutes, and court rules of procedure.
 Apart from the special responsibilities of a prosecutor under this Rule, prosecutors are subject to the same obligations imposed upon all lawyers by these Rules of Professional Conduct, including Rule 5.3, relating to responsibilities regarding nonlawyers who work for or in association with the lawyer’s office. Indeed, because of the power and visibility of a prosecutor, the prosecutor’s compliance with these Rules, and recognition of the need to refrain even from some actions technically allowed to other lawyers under the Rules, may, in certain instances, be of special importance. For example, Rule 3.6 prohibits extrajudicial statements that will have a substantial likelihood of destroying the impartiality of the judge or jury. In the context of a criminal prosecution, pretrial publicity can present the further problem of giving the public the incorrect impression that the accused is guilty before having been proven guilty through the due processes of the law. It is unavoidable, of course, that the publication of an indictment may itself have severe consequences for an accused. What is avoidable, however, is extrajudicial comment by a prosecutor that serves unnecessarily to heighten public condemnation of the accused without a legitimate law enforcement purpose before the criminal process has taken its course. When that occurs, even if the ultimate trial is not prejudiced, the accused may be subjected to unfair and unnecessary condemnation before the trial takes place. Accordingly, a prosecutor should use special care to avoid publicity, such as through televised press conferences, which would unnecessarily heighten condemnation of the accused.
 Nothing in this Comment, however, is intended to suggest that a prosecutor may not inform the public of such matters as whether an official investigation has ended or is continuing, or who participated in it, and the prosecutor may respond to press inquiries to clarify such things as technicalities of the indictment, the status of the matter, or the legal procedures that will follow. Also, a prosecutor should be free to respond, insofar as necessary, to any extrajudicial allegations by the defense of unprofessional or unlawful conduct on the part of the prosecutor’s office.