¶ 1. PER CURIAM

Four of the twenty-nine plaintiffs-respondents in Jackson v. Benson, 218 Wis.2d 835, 578 N.W.2d 602 (1998), cert. denied, 525 U.S. 967 (1998), move this court to vacate its decision of June 10, 1998, upholding the constitutionality of the state's amended Milwaukee Parental Choice Program (MPCP). As grounds for their motion, the four respondents assert that they recently received new information that this court's decision was rendered by an improperly constituted panel because of the participation of a justice disqualified by law. The respondents seek to reinforce their motion by noting that the school choice issue is currently pending before the United States Supreme Court on a similar constitutional challenge to an Ohio school choice program. See Zelman v. Simmons-Harris, 234 F.3d 945 (6th Cir. 2000), cert. granted, 533 U.S. ___ (No. 00-1571). Oral argument in Zelman is scheduled for February 20, 2002. The respondents assert that at least three parties to this court's decision in Jackson v. Benson who support school choice have submitted amicus briefs to the United States Supreme Court and are likely to have cited Jackson v. Benson as persuasive authority.

¶ 2. We dismiss the respondents' motion because it is untimely and frivolous as a matter of law. More than 1300 days have passed since this court issued its decision in Jackson v. Benson. More importantly, more than 600 days have passed since the information advanced by respondents in support of their disqualification claim became publicly known. Inasmuch as motions such as this constitute an attack on the integrity of this court's decisions, they must be brought promptly. This one was not. Respondents' inordinate and unexplained delay in raising the disqualification issue in a timely fashion constitutes a waiver of whatever objections they may have had in this regard and lead us to the conclusion that the motion to vacate is frivolous.

I

¶ 3. We set forth the significant facts surrounding Jackson v. Benson and respondents' claims that Justice Jon P. Wilcox should not have participated in the decision.

¶ 4. The constitutionality of the amended MPCP has been before this court on two occasions. In 1996 this court heard argument in an original action. On March 29, 1996, this court split three-three over the constitutionality of the amended MPCP, with Justice Wilcox voting to uphold it. State ex rel. Thompson v. Jackson, 199 Wis.2d 714, 720, 546 N.W.2d 140 (1996). The case was remanded to Dane County Circuit Court, which later found the statute unconstitutional.

¶ 5. On April 1, 1997, Justice Wilcox won a ten-year term on this court, defeating Milwaukee attorney Walter Kelly by a margin of 185,437 votes. On April 3, 1997, two days after the election, there was a press report that an anonymous group of individuals had spent an estimated $135,000 to print and mail as many as 450,000 postcards to support Justice Wilcox's election. In April 1997 Mark Block, the campaign manager for the Justice Wilcox for Justice Campaign (JWJC), admitted to the public that he had been contacted in January and March by the group that sent the postcards, but he did not identify the group. The names of the persons who gave the money were not revealed at that time, nor was it revealed that the donors were school choice proponents.

¶ 6. On June 16, 1997, an organization called The Wisconsin Coalition for Voter Participation (WCVP) was identified as the group that coordinated the postcard mailing. On July 30, 1997, the State Elections Board voted unanimously to investigate the anonymous mass mailing. The investigation ultimately revealed that WCVP made disbursements and incurred obligations of approximately $200,000 on mailings and telephone calls to targeted voters.

¶ 7. On August 22, 1997, the court of appeals, in a two-one decision, affirmed an order of the circuit court for Dane county, Paul B. Higginbotham, Judge, finding the amended MPCP unconstitutional.Jackson v. Benson, 213 Wis.2d 1, 570 N.W.2d 407 (Ct.App. 1997). The majority of the court of appeals concluded that the amended MPCP was invalid under Article I, Section 18 of the Wisconsin Constitution because it directed payments of money from the state treasury for the benefit of religious seminaries. This court granted the state's petition for review on October 14, 1997. In late December 1997 the WCVP filed a lawsuit seeking to halt the investigation into possible ties between the group and the Wilcox campaign.

¶ 8. This court heard oral argument in Jackson v. Benson on March 4, 1998. The court issued its decision on June 10, 1998. Justice Steinmetz authored the majority opinion reversing the court of appeals. Justices Wilcox, Geske, and Crooks joined the majority opinion. Chief Justice Abrahamson and Justice Bablitch dissented. Justice Bradley did not participate. On June 26, 1998, intervenors/respondents Parents For School Choice, et al., filed a motion for clarification of the opinion, so that for a time a post-decision motion was pending before this court. The motion was subsequently withdrawn. On November 9, 1998, the United States Supreme Court denied certiorari review.

¶ 9. In November 1999 the court of appeals allowed the State Elections Board to proceed in its investigation of the connection between the WCVP mailing and the Wilcox campaign, affirming the circuit court's dismissal of the WCVP's lawsuit to halt the investigation and have the mailing declared legal. Coalition for Voter Participation v. Elections Bd., 231 Wis.2d 670, 605 N.W.2d 654 (Ct.App. 1999), review denied, 231 Wis.2d 377, 607 N.W.2d 293 (1999).

¶ 10. On March 22, 2000, the State Elections Board unanimously adopted the following motion:

MOTION: TO EXPRESS THE SENSE OF THE ELECTIONS BOARD THAT JUSTICE JON WILCOX DID NOTHING ILLEGAL AND WAS NOT PERSONALLY RESPONSIBLE FOR ANY ILLEGAL ACTIVITIES OF HIS CAMPAIGN FOR THE OFFICE OF JUSTICE OF THE SUPREME COURT, THE ELECTION FOR WHICH WAS HELD IN APRIL 1997; . . .

¶ 11. In the spring of 2000 the identities of the persons who contributed to the WCVP became publicly known.

¶ 12. On March 20, 2001, the civil action brought by the State Elections Board against the JWJC and campaign manager Mark Block ended with a monetary settlement, stipulation, and order for dismissal. In a statement attached to the stipulation, Justice Wilcox stated:

Last March the State Elections Board stated that it was the sense of the Board that I did nothing illegal and was not personally responsible for any illegal activities of my campaign. However, the Board's investigation has implicated my campaign manager and others in violations of the state's campaign finance law. I choose not to contest this. I acknowledge that I had a responsibility for the conduct of campaign staff. Therefore, as the candidate, I am funding my campaign committee so that the committee can pay a monetary penalty to settle this matter.

¶ 13. On January 9, 2002, respondents filed their motion to vacate the Jackson v. Benson decision, claiming that the facts set forth above demonstrate that Justice Wilcox was disqualified by law from participating in the case.

¶ 14. The general rule is that, after remittitur, the supreme court has no jurisdiction to vacate or modify its judgment. Ott v. Boring, 131 Wis. 472, 110 N.W. 824 (1907). Where a justice who participated in a case was disqualified by law the court's judgment in that case is void.Case v. Hoffman, 100 Wis. 314, 72 N.W. 390, reh'g granted 74 N.W. 220 (1898). We have previously stated, "[a]n attack on the validity of a judgment of the state's highest court on the ground of a member's disqualification by law for an apparent inability to act impartially is not, nor can we conceive of it ever being, a `routine matter.'" State v. American TV Appliance, 151 Wis.2d 175, 192, 443 N.W.2d 662 (1989). We have also said, however, that it behooves the court in the defense of its own legitimacy and of its integrity to consider a party's claim that a decision may be void because a justice should not have participated in the case. City of Edgerton v. General Cas. Co., 190 Wis.2d 510, 527 N.W.2d 305 (1995).

¶ 15. The chronology of events in this case demonstrates that the respondents were on notice by the spring of 2000 as to the identity of the donors to WCVP and their support of the school choice issue. Instead of bringing their motion at that time, the respondents remained silent for almost another two years, raising their disqualification objection on the eve of the United States Supreme Court's oral argument in another case raising the issue of the constitutionality of a private school voucher program.

¶ 16. Although respondents claim "it was not until a few months ago that information was made public casting a shadow on the 1997 supreme court election and highlighting the role of money in that election from the advocates for the defendants in a pending case," the record amply demonstrates that all information arguably pertinent to any disqualification issue in the case was publicly known by the spring of 2000. By failing to raise the issue in a timely fashion, respondents waived whatever objections they may have had to Justice Wilcox's participation in the court's decision.

¶ 17. We came to a similar conclusion in City of Edgerton. In that case Edgerton Sand Gravel, Inc., (ESG) moved to vacate this court's decision or, in the alternative, moved for a rehearing in the matter. Edgerton Sand Gravel, Inc., argued that Justice Geske improperly participated in the case. At the outset of oral argument, Justice Geske stated on the record that the previous night she noted for the first time that one of the companies listed in the appendix to an amicus brief was St. Paul Companies, the employer of Justice Geske's husband. Justice Geske stated she did not believe that fact presented any conflict and it would not influence her. She informed the parties that if anyone had any objections to her sitting on the case, she would appreciate hearing from them by letter by the end of the week.

¶ 18. No objection was raised by any of the parties until a non-party, Kenosha Auto Transport (KAT), raised the question of Justice Geske's participation in a proposed amicus brief KAT tendered to the court in support of a motion for reconsideration filed over seven months later. The motion to file an amicus brief was denied and the movants' request to seek Justice Geske's disqualification was dismissed. More than two months later ESG filed a motion to vacate the decision, arguing that Justice Geske was disqualified under Wis. Stat. § 757.19(2) and (3) from participating in the original decision and asking for the vacation of the decision or, in the alternative, for rehearing without Justice Geske's participation. Edgerton Sand Gravel, Inc., argued that Justice Geske's disclosure about her connection with St. Paul Companies had been incomplete.

¶ 19. The Edgerton court noted that the disqualification statute provides that any disqualification "may be waived by agreement of all parties and the judge after full and complete disclosure on the record of factors creating the disqualification." Wis. Stat. § 757.19(3). TheEdgerton court found it significant that ESG did not argue that Justice Geske's disclosure and her setting of a time limit to object or to waive objection to her participation in the case was not a proper procedural framework for the waiver of disqualification. Instead, ESG argued Justice Geske's disclosure was not sufficient and did not constitute a "full and complete disclosure." The Edgerton court said:

We conclude that under the circumstances of this case the disclosure made by Justice Geske was sufficient — that all the facts necessary for counsel to determine whether to assert or waive any disqualification were either disclosed or were readily obtainable of record prior to the "weekend deadline" suggested by Justice Geske. Following that disclosure, if ESG had been concerned, it could have examined the financial disclosures Justice Geske had filed with the Ethics Board and if those disclosures did not satisfy ESG in respect to Justice Geske's financial ties to St. Paul Companies, it could have asked for more information from her or could have advised her "by the end of the week" that it objected to her participation.

If ESG's counsel examined the public record, it apparently did not deem the information in it sufficient to pursue the disqualification issue. Now, however, ESG's substituted counsel asserts that Justice Geske's disqualification was required on the basis of inferences it makes from that information. Clearly, ESG waived any possible disqualification by not acting by the "end of the week" and for one year following oral argument.

Even after the court's decision on June 16, 1994 — after learning that Justice Geske was the scrivener for the court ESG's counsel did not raise the question of Justice Geske's qualification to sit but asserted in its reconsideration motion only that the court had failed to follow what counsel considered controlling law. Despite the fact that ESG had been served with a copy of KAT's proposed amicus motion and brief raising the disqualification issue, it did not join in KAT's motion or express to the court in its motion for reconsideration on the merits any position in respect to disqualification.

Hence, we conclude that on at least two discrete occasions, ESG's counsel failed to make any objection to Justice Geske's participation. These successive waivers in themselves bar ESG from asserting its motion for vacatur at this time, months after it could have informed itself of the facts on which its motion is based and made any concern known to the court.

Id. at 518-19.

¶ 20. The same analysis applies with even greater force in this case. Although there was no judicial disclosure here, the basic facts upon which the respondents now rely in raising the issue of Justice Wilcox's participation were readily available as of the spring of 2000. Yet respondents did not raise the disqualification issue at that time; indeed, their inaction continued for almost another two years.

¶ 21. Not until January 9, 2002, twenty-one months after the identity of the donors to WCVP became publicly known, did respondents file a motion to vacate the decision. Respondents' delay in bringing the motion mandates a finding of waiver. Although respondents claim the motion was filed in January of 2002 because of "new information," this court has searched the entire record and found nothing "new." Instead, all of the facts arguably pertinent to the disqualification claim were well known in the spring of 2000.

¶ 22. The respondents' inordinate delay in filing the motion to vacate mocks the fundamental and vital principle of finality, which is essential to the operation of a society governed by law. See Wittke v. State ex rel. Smith, 80 Wis.2d 332, 342, 259 N.W.2d 515 (1977). Motions such as this, having the potential to undermine the public's trust and confidence in the legitimacy of this court's decisions and the integrity and impartiality of this court as an institution, are very serious indeed, and, accordingly, must be raised in a timely fashion.

II

¶ 23. The State of Wisconsin and Marquelle Miller, et al., ask this court to assess reasonable attorney fees and costs against respondents and their counsel pursuant to Wis. Stat. § 809.25(3). We agree that the extraordinary untimeliness of the motion to vacate justifies a finding of frivolousness. The fact that the motion was filed a mere six weeks before the scheduled oral argument of another state-funded private school voucher case in the United States Supreme Court calls the timing of and motives behind the respondents' motion into question.

¶ 24. We conclude that the motion to vacate, coming as it did almost two years after the public disclosure of the information pertinent to the respondents' claims and shortly before oral argument in the United States Supreme Court, was filed in bad faith, for improper purpose, to undermine the public's confidence in the legitimacy of this court's decision and the integrity of this court as an institution. The seriousness of a motion of this sort is not an excuse for tardiness in bringing it; to the contrary, the gravity of this type of motion compels that it be timely brought to ensure a prompt resolution. The only reasonable inference that can be drawn from the inordinate untimeliness and suspect timing of this motion is that it was brought in bad faith for improper purpose. Any other conclusion would seriously undermine the concept of frivolousness. We grant the motions of the state and Marquelle Miller, et. al., for an award of reasonable attorney fees and costs incurred in responding to the motion to vacate. We remand the matter to the Dane County Circuit Court for a determination of the amount of reasonable attorney fees and costs.

¶ 25. JON P. WILCOX and ANN WALSH BRADLEY, JJ., did not participate.