ON APPELLANT’S EMERGENCY • MOTION FOR A STAY
Before SILBERMAN, WILLIAMS and GINSBURG, Circuit Judges. Opinion for the Court filed by Circuit Judge SILBERMAN. Separate Concurring Statement filed by Circuit Judge D.H. GINSBURG. SILBERMAN, Circuit Judge:This case involves a challenge by former White House Deputy Chief of Staff Michael K. Deaver to the constitutionality of the independent counsel provisions of the Ethics in Government Act, 28 U.S.C. §§ 49, 591-98 (1982 & Supp. Ill 1985). Deaver filed a civil complaint in federal district court seeking declaratory and injunctive relief from independent counsel Whitney North Seymour, Jr.’s continued exercise of prosecutorial authority. Following the district court’s denial of his motion for a preliminary injunction, Deaver appealed to this court and moved for an Emergency Stay to preserve the status quo until we determined the constitutionality vel non of the Act. He alleged that absent a stay he would suffer imminent, irreparable harm in the form of a criminal indictment obtained by Seymour. In an Order dated March 17, 1987, we held that Deaver’s lawsuit constituted an impermissible preemptive civil challenge to a criminal proceeding. Accordingly, we denied the motion for Emer*67gency Stay, and on our own motion, summarily affirmed the district court’s denial of a preliminary injunction. We then ordered the case remanded to the district court with directions to dismiss the complaint. We now explain that decision.
I.
From 1981 until 1985, Michael Deaver served as White House Deputy Chief of Staff and Assistant to the President of the United States. In May of 1985, Deaver left his position at the White House and established the firm of Michael K. Deaver and Associates, a lobbying association of which he is the president. Thereafter, Deaver’s contacts with government officials on behalf of his clients became the object of public scrutiny. On April 23, 1986, five members of the United States Senate wrote to the Attorney General and, pursuant to 28 U.S.C. § 595(e) (1982),1 requested the appointment of an independent counsel to investigate Deaver’s lobbying activities. Amid growing public speculation concerning the possible impropriety of his contacts with former White House associates on behalf of his clients, Deaver himself requested that an independent counsel be appointed. Finding reasonable grounds to warrant further investigation or prosecution, the Deputy Attorney General on May 22, 1986 applied to a special division of this court for appointment of an independent counsel.2 The application detailed alleged attempts by Deaver to lobby the White House on behalf of two clients, the Government of Canada and the Commonwealth of Puerto Rico, and requested an investigation to determine whether prosecution was warranted for violations of 18 U.S.C. § 207 (1982)3 or any other federal criminal law.
One week later, the court appointed Whitney North Seymour, Jr. to serve as independent counsel. After organizing a staff and arranging for a grand jury, Seymour began a nine-month investigation into Deaver’s lobbying activities. On February 24, 1987, Seymour informed Deaver that he was about to ask the grand jury to return an indictment. The next day, Deaver filed this civil action claiming the Ethics in Government Act is unconstitutional because it vests prosecutorial authority, which belongs exclusively to the Executive branch, in an individual who is not subject to presidential appointment, control, or removal. Deaver moved to enjoin preliminarily Seymour’s efforts to obtain an indictment, contending that immediate and irreparable harm would befall him if equitable relief were not granted. He asserted that if Seymour’s activities were not halted, he *68would suffer the “continuing destruction of his business,” “injury to his reputation and dignity,” and “the expenditure of substantial resources in his defense.”
*67A majority of majority party members or a majority of all nonmajority party members of the Committee on the Judiciary of either House of the Congress may request in writing that the Attorney General apply for the appointment of a[n] independent counsel. Not later than thirty days after the receipt of such a request, or not later than fifteen days after the completion of a preliminary investigation of the matter with respect to which the request is made, whichever is later, the Attorney General shall provide written notification of any action the Attorney General has taken in response to such request and, if no application has been made to the division of the court, why such application was not made. Such written notification shall be provided to the committee on which the persons making the request serve, and shall not be revealed to any third party, except that the committee may, either on its own initiative or upon the request of the Attorney General, make public such portion or portions of such notification as will not in the committee’s judgment prejudice the rights of any individual.
*68The district court temporarily restrained Seymour from seeking an indictment. Later, however, applying the four-part test set out by this court in Washington Metro. Area Transit Comm’n v. Holiday Tours, Inc., 559 F.2d 841, 843 (D.C.Cir.1977), the court denied the motion for a preliminary injunction. The district court concluded that any harm Deaver might suffer as the result of a criminal indictment was not irreparable because there existed an adequate remedy at law, since Deaver could move to dismiss the charges under Federal Rule of Criminal Procedure 12(b)(1) for “defects in the institution of the prosecution.” The court also concluded that Deaver had failed to demonstrate the likelihood of ultimate success on the merits because, in the district court’s view, the Act would probably not be found to offend the Constitution. Finally, the court concluded the public interest required that any possible violations of the criminal law be speedily prosecuted, an interest most likely secured by allowing Seymour immediately to seek an indictment.
Although the denial of Deaver’s application for a preliminary injunction is an interlocutory order appealable under 28 U.S.C. § 1292(a)(1) (1982),4 the district court in addition certified for this court’s review the question of the constitutionality vel non of the Act as a “controlling question of law” pursuant to 28 U.S.C. § 1292(b) (1982).5 Deaver immediately appealed the district court’s order and sought emergency injunctive relief to preclude an indictment pending our review. We entered a five-day administrative stay and ordered the parties to file supplemental briefs.
On March 17, 1987, after considering the supplemental briefs, we dissolved our administrative stay, denied Deaver’s Emergency Motion for Stay, affirmed the district court’s denial of his motion for a preliminary injunction, and remanded the case with directions to dismiss the complaint.
II.
The district court, applying the Holiday Tours test, thought it necessary to consider the likelihood that appellant would succeed on the merits of his constitutional challenge to the authority of the independent counsel. We do not. Even were we disposed to agree entirely with appellant’s constitutional argument, we think he has no right to an injunction restraining a pending indictment in a federal court.
The traditional rule, dating back to the English division between courts of law and equity, was that the latter had “no jurisdiction over the prosecution, the punishment or the pardon of crimes or misdemeanors” and therefore could not enjoin criminal proceedings, In re Sawyer, 124 U.S. 200, 210, 8 S.Ct. 482, 487, 31 L.Ed. 402 (1888). Departing somewhat from this rule around the turn of the century, the Supreme Court in certain cases permitted federal courts to issue injunctions against state court criminal proceedings that threatened federal constitutional rights. See, e.g., Dobbins v. Los Angeles, 195 U.S. 223, 241, 25 S.Ct. 18, 22, 49 L.Ed. 169 (1904) (court of equity may enjoin prosecution under void law where property rights would otherwise be destroyed); Truax v. Raich, 239 U.S. 33, 38, 36 S.Ct. 7, 9, 60 L.Ed. 131 (1915) (court may enjoin enforcement of unconstitutional criminal law when essential to protect right *69to earn a livelihood). A federal injunction was available to prevent state officers from instituting criminal proceedings “under extraordinary circumstances where the danger of irreparable loss [of a constitutional right was] both great and immediate.” See Fenner v. Boykin, 271 U.S. 240, 243, 46 S.Ct. 492, 493, 70 L.Ed. 927 (1926).
More recently however, the Court, troubled by notions of comity, tightened the criteria for granting federal injunctions that interfere with state criminal proceedings, holding that the “cost, anxiety, and inconvenience of having to defend against a single criminal prosecution” are not recognized as irreparable injuries justifying an equitable remedy. Younger v. Harris, 401 U.S, 37, 46, 91 S.Ct. 746, 751-52, 27 L.Ed.2d 669 (1971). See also Bokulich v. Jury Commission of Greene County, 394 U.S. 97, 98, 89 S.Ct. 767, 768, 22 L.Ed.2d 109 (1969); Spielman Motor Sales Co., Inc. v. Dodge, 295 U.S. 89, 96, 55 S.Ct. 678, 681, 79 L.Ed. 1322 (1935). Although it is surely true that an innocent person may suffer great harm to his reputation and property by being erroneously accused of a crime, all citizens must submit to a criminal prosecution brought in good faith so that larger societal interests may be preserved. See Douglas v. City of Jeannette, 319 U.S. 157, 163, 63 S.Ct. 877, 880-81, 87 L.Ed. 1324 (1943); Beal v. Missouri Pacific R.R. Corp., 312 U.S. 45, 49, 61 S.Ct. 418, 420-21, 85 L.Ed. 577 (1941). As Justice Frankfurter explained, “[b]earing the discomfiture and cost of a prosecution for crime even by an innocent person is one of the painful obligations of citizenship.” Cobbledick v. United States, 309 U.S. 323, 325, 60 S.Ct. 540, 541, 84 L.Ed. 783 (1940).
Thus, in the past few decades, the Supreme Court has upheld federal injunctions to restrain state criminal proceedings only where the threatened prosecution chilled exercise of First Amendment rights, see, e.g., Wooley v. Maynard, 430 U.S. 705, 97 S.Ct. 1428, 51 L.Ed.2d 752 (1977) (threatened enforcement of unconstitutional statute requiring “Live Free or Die” motto on car license plate against those covering up motto); Doran v. Salem Inn, Inc., 422 U.S. 922, 95 S.Ct. 2561, 45 L.Ed.2d 648 (1975) (ordinance banning topless dancing, enforcement of which threatens to bankrupt petitioner); Dombrowski v. Pfister, 380 U.S. 479, 85 S.Ct. 1116, 14 L.Ed.2d 22 (1965) (civil rights workers repeatedly prosecuted under state law broadly regulating speech).6 See also Steffel v. Thompson, 415 U.S. 452, 94 S.Ct. 1209, 39 L.Ed.2d 505 (1974) (granting declaratory relief to handbill distributors repeatedly threatened with arrest). In all other cases that have arisen in that period, a person asserting a constitutional challenge to criminal process has been thought to have an adequate non-injunctive remedy; he may raise his constitutional claim as a defense in the state criminal proceedings, once initiated.
We have recently recognized that while the Younger line of cases constricts federal intervention in state prosecutions, it does not necessarily control a petition for a federal civil injunction to restrain an ongoing federal criminal proceeding. See Juluke v. Hodel, 811 F.2d 1553, 1556-57 (D.C.Cir.1987). Nevertheless, in no case that we have been able to discover has a federal court enjoined a federal prosecutor’s investigation or presentment of an indictment. Of course, a federal prosecutor typically brings cases only in federal court,7 thereby affording defendants, after indictment, a federal forum in which to assert their defenses — including those based on the Constitution. Because these defendants are already guaranteed access to a federal court, it is not surprising that subjects of federal investigation have never gained in*70junctive relief against federal prosecutors.8 Moreover, as the district court noted, Rule 12(b)(1) of the Federal Rules of Criminal Procedure permits any defendant to raise by motion, after indictment but before trial, a defense based on “defects in the institution of the prosecution.”9 Deaver’s challenge is essentially that — a contention that there would be a constitutional defect in the institution of any prosecution growing out of the independent counsel’s investigation. By implication, the existence of Rule 12(b)(1) suggests that appellant’s constitutional challenge is not to be raised in a preindictment civil injunctive action. This implication is strengthened by the traditional reluctance, which we have discussed, of an equity court to interfere with criminal proceedings. And we think the limited appealability of district court orders denying pretrial motions in criminal cases makes the implication that Deaver cannot bring this Rule 12(b)(l)-type claim to our court inescapable. A district court’s denial of a pretrial motion is ordinarily not considered a “final decision” appealable under 28 U.S.C. § 1291; the defendant must therefore stand trial, and only after conviction may he bring the issue to the Court of Appeals. See United States v. Hollywood Motor Car Co., Inc., 458 U.S. 263, 264, 102 S.Ct. 3081, 3082, 73 L.Ed.2d 754 (1982); United States v. Bird, 709 F.2d 388, 390 (5th Cir.1983). The Supreme Court has departed from this application of the “final judgment rule” in criminal cases on only three occasions; in each case it found the district court’s decision effectively final under the collateral order doctrine. See Cohen v. Beneficial Ind. Loan Corp., 337 U.S. 541, 545-47, 69 S.Ct. 1221, 1225-26, 93 L.Ed. 1528 (1949). The Court has permitted interlocutory appeal of the denial of motions to reduce excessive bail, Stack v. Boyle, 342 U.S. 1, 72 S.Ct. 1, 96 L.Ed. 3 (1951), to dismiss an indictment on double jeopardy grounds, Abney v. United States, 431 U.S. 651, 97 S.Ct. 2034, 52 L.Ed.2d 651 (1977) , and to dismiss a prosecution against a congressman prohibited by the Speech and Debate Clause of the Constitution, Helstoski v. Meanor, 442 U.S. 500, 99 S.Ct. 2445, 61 L.Ed.2d 30 (1979).10 In each case, immediate appeal was necessary because the petitioner had alleged the violation of a specific right guaranteed by the Constitution “the legal and practical value of which would be destroyed if it were not vindicated before trial.” Hollywood Motor Car, 458 U.S. at 266, 102 S.Ct. at 3083 (quoting United States v. MacDonald, 435 U.S. 850, 860, 98 S.Ct. 1547, 1552, 56 L.Ed.2d 18 (1978) ).
Deaver argues that the independent counsel’s investigation violates important rights and that this violation cannot adequately be remedied at a later date. He contends that he is being forced to defend himself against criminal charges brought by a mere private citizen — a vigilante. It is true that the burden of being haled into court by a pretender to the throne, so to speak, cannot be completely remedied once a trial begins, for the defendant would still have suffered the indignity. Yet, without *71deciding an issue not squarely before us, we doubt that Deaver’s claim — were it unsuccessfully raised in a Rule 12(b)(1) motion after indictment — would be immediately appealable under the collateral order exception to the final judgment rule. Unlike the defendants in the cases described above, Deaver does not assert a constitutional right not to stand trial, but merely claims that Seymour is not qualified to direct the prosecution. Assuming arguendo Deaver’s contention is correct, his rights can be vindicated by a reversal of any conviction. See, e.g., Hollywood Motor Car, 458 U.S. at 268, 102 S.Ct. at 3084 (defendant’s prosecutorial vindictiveness claim can be remedied through post-conviction appeal); United States v. MacDonald, 435 U.S. 850, 860, 98 S.Ct. 1547, 1552-53, 56 L.Ed.2d 18 (1978) (objection to trial based on speedy trial grounds appealable only after conviction); United States v. Taylor, 798 F.2d 1337, 1340 (10th Cir.1986) (claims of prosecutorial misconduct, including improper use of state officers in grand jury investigation, appealable after conviction); Bird, 709 F.2d at 392 (claim that prosecution violated plea bargain agreement not to prosecute can be vindicated on post-conviction appeal). Thus, were Deaver to bring this same claim as a Rule 12(b)(1) motion, we think it likely the final judgment rule would bar any appeal of a denial of that motion until after conviction. Were we to allow Deaver to bring a civil challenge, with its attendant rights of appeal, before a prosecution even begins, we would thereby undermine the final judgment rule.
That Deaver’s challengé is a serious one with far-ranging and troubling constitutional implications does not support his argument for accelerated and unorthodox judicial review. Indeed, it substantially weakens it. We have an obligation to avoid constitutional questions if at all possible. See Ashwander v. Tennessee Valley Auth., 297 U.S. 288, 346-48, 56 S.Ct. 466, 482-84, 80 L.Ed. 688 (1936) (Brandeis, J., concurring). This principle is particularly strong when the constitutionality of a federal statute is challenged. See Hastings v. Judicial Conference of the United States, 770 F.2d 1093, 1100 (D.C.Cir.1985), cert. denied, — U.S. -, 106 S.Ct. 3272, 91 L.Ed.2d 563 (1986). If appellant is acquitted of the charges brought against him, we of course would not be obliged to decide this constitutional issue.11
Congress has established a comprehensive set of rules governing federal criminal prosecutions — the Federal Rules of Criminal Procedure. These rules provide adequate, although limited, opportunities for defendants to challenge shortcomings in prosecutorial authority. The final judgment rule, moreover, generally prevents defendants from bringing appeals until after conviction. We cannot allow Deaver to avoid these rules — and thereby encourage a flood of disruptive civil litigation — by bringing his constitutional defense in an independent civil suit. Prospective defendants cannot, by bringing ancillary equitable proceedings, circumvent federal criminal procedure.
. Section 595(e) provides:
. The Act provides for the assignment of three Circuit Judges to a division of the United States Court of Appeals for the District of Columbia Circuit for the purpose of appointing independent counsels. See 28 U.S.C. § 49 (1982). If the Attorney General, upon completion of a preliminary investigation, finds "reasonable grounds” to believe that further investigation or prosecution is warranted, or, if within ninety days after receiving "information” sufficient to preliminarily investigate a person, fails to find that no investigation or prosecution is warranted, then the Attorney General "shall apply to the division of the court for appointment of a[n] independent counsel." 28 U.S.C. § 592(c)(1) (1982). The Attorney General recused himself from this matter and appointed the Deputy Attorney General to act in his place.
. Section 207 prohibits former high-level federal employees from lobbying the government under certain circumstances in connection with matters for which they had responsibility as government officials.
. Section 1292(a)(1) provides "[T]he courts of appeals shall have jurisdiction of appeals from: (1) Interlocutory orders of the district courts of the United States ... granting, continuing, modifying, refusing or dissolving injunctions____" 28 U.S.C. § 1292(a)(1) (1982).
. Section 1292(b) provides:
When a district judge, in making in a civil action an order not otherwise appealable under this section, shall be of the opinion that such order involves a controlling question of law as to which there is substantial ground for difference of opinion and that an immediate appeal from the order may materially advance the ultimate termination of the litigation, he shall so state in writing in such order. The Court of Appeals may thereupon, in its discretion, permit an appeal to be taken from such order____
28 U.S.C. § 1292(b) (1982).
. In Dombrowski, the plaintiffs had alleged that their prosecutions were brought in bad faith, see 380 U.S. at 482, 85 S.Ct. at 1118-19, yet the Court did not seem to rely on this allegation as the primary basis for ordering that an injunction be granted. But see Younger v. Harris, 401 ns. 37, 47-49, 91 S.Ct. 746, 752-753, 27 L.Ed.2d 669 (1971) (discussing Dombrowski).
. In the District of Columbia, the United States Attorney may also prosecute criminal charges in *70the District of Columbia court system. See D.C. Code Ann. § 23-101(c) (1981).
. Juluke assumed (but did not actually hold) that federal courts may extend Doran and Wooley to justify enjoining future federal arrests and prosecutions that chill the exercise of First Amendment rights. See 811 F.2d at 1557. Deaver is neither asserting a violation of First Amendment rights nor complaining that Seymour's threatened indictment chills future behavior.
. The Federal Rules of Criminal Procedure are a comprehensive set of rules of pleading, practice, and procedure for federal criminal prosecutions. The Supreme Court has been given authority by statute to prescribe such rules and present them to the Congress for examination. The proposed rules take effect 90 days later, unless Congress, by legislation, delays their implementation and/or amends them. Once put into effect, the Federal Rules have the force of law. See 18 U.S.C. § 3771 (1982). See also Hungate, Changes in the Federal Rules of Criminal Procedure, 61 A.B.AJ. 1203 (1975).
. Applying the rationale of Helstoski, three circuit courts have permitted sitting federal officials who claim immunity from prosecution on separation of powers grounds to bring interlocutory appeals from the denial of their motions to dismiss. See United States v. Myers, 635 F.2d 932 (2d Cir.1980) (Member of Congress); United States v. Hastings, 681 F.2d 706 (11th Cir.1982) (federal judge); United States v. Claiborne, 727 F.2d 842 (9th Cir.1984) (federal judge).
. The district court’s certification of the constitutional question as a controlling question of law under 28 U.S.C. § 1292(b) (1982) does not affect our disposition. To be sure, that issue may well be controlling in the criminal proceeding that would follow Deaver’s indictment, but, of course, section 1292(b), by its terms, does not apply to criminal proceedings. And, as we have explained, the issue cannot be controlling in this suit since appellant may not raise the issue in the manner he did.