Ross and Amy Parkhurst, the adoptive father and biological mother of H.P., a minor child, asserted claims as next friend under 42 U.S.C. § 1983 against Arkansas state prosecutors Stephen Tabor and Daniel Shue, and Sebastian County, Arkansas. The Parkhursts alleged a violation of H.P.’s right to equal protection under the Fourteenth Amendment based on Tabor and Shue’s decision to issue a nolle prosequi 1 and forego prosecution of H.P.’s biological father for the felony sexual assault of his daughter. The district court 2 dismissed the case under Rule 12(b)(6) for failure to state a claim. The Parkhursts appeal, arguing that the Fourteenth Amendment guarantees to crime victims the nondiscriminatory prosecution of crime. We affirm.
I.
When a district court dismisses a claim under Rule 12(b)(6) we examine the facts alleged in the complaint.
See Hafley v. Lohman,
H.P. first visited Belt in Arkansas for an extended period of time during the summer of 2001 when she was seven. After returning to Arizona H.P. begged her mother not to require her to visit her biological father again. When Belt arrived in Arizona the following summer to take H. P. back to Arkansas, she became emotionally overwrought and was allowed to skip the visit. Belt insisted that H.P. resume visitation in 2003, however, and H.P. spent seven weeks in Arkansas with him when she was nine. Amy Parkhurst spoke regularly to H.P. that summer and reported that her daughter seemed increasingly uncomfortable and emotional as the summer progressed.
On July 21, 2003 H.P. telephoned her mother from Arkansas and informed her that she had injured her genitals in a diving board accident and was bleeding vaginally. Two days later Amy Parkhurst traveled to Arkansas to investigate the nature of H.P.’s injuries and to procure medical treatment for her daughter since Belt had not. Upon Amy Parkhurst’s arrival, H.P. informed her that she had injured both her “bottom” and her vagina. Between July 23 and 28 H.P. was examined at three separate medical facilities in Arkansas and Oklahoma. Although H.P. continued to insist that she had been injured in an inconsistently described accident, all medical personnel diagnosed H.P. as a potential victim of sexual abuse. The matter was referred to the Crimes Against Children Division of the Arkansas State Police which determined that H.P. had been sexually abused but noted that she feared identifying the perpetrator.
Shortly after H.P. and her mother left Arkansas for Washington state, where the Parkhursts had relocated, Belt spontaneously offered to relinquish his parental rights to H.P. if the Parkhursts would sign a statement that they were not accusing him of molesting the girl. The Parkhursts executed the requested document and Belt consented to the termination of his parental rights. Thereafter Ross Parkhurst began proceedings to adopt H.P., and H.P. *864 sought and received assurance that she would not have to visit Belt in the future. Several days after the adoption ceremony, H.P. disclosed that Belt had raped her during the summers of 2001 and 2003. Belt was arrested by the Sebastian County, Arkansas police and charged with felony sexual assault on December 5, 2003.
Chief Deputy Prosecuting Attorney Tabor and Prosecuting Attorney Shue were assigned to the case. The prosecutors expressed confidence in the overwhelming evidence against Belt. Shue stated, however, that as a matter of policy his office was reluctant to prosecute sexual abuse perpetrated by a close relative. As he put it, “no one wants these [incest] eases” and his office “would prefer not to prosecute such a case if it could find a reason not to.” In their appellate brief Tabor and Shue suggested that victims of incest make “hesitant” and “incredible” witnesses and that the department prioritizes “other types of cases” as a result. Shue acknowledged that in this respect the departments’ approach to incestuous assault differs from its approach to other sexual assault cases.
The Parkhursts claim that as a result of this policy Tabor and Shue sought a pretext for abandoning the Belt prosecution. Under Arkansas law the result of a polygraph test is inadmissible in a criminal proceeding unless the parties stipulate to its admissibility. The Parkhursts allege that Tabor and Shue were aware that an agreement to administer a polygraph examination and to stipulate that the result would be admissible was contrary to sound prosecutorial policy because the perpetrator of a sex crime is often able to pass a polygraph test. Despite their alleged knowledge that it would be inadvisable, Tabor and Shue arranged for the administration of a polygraph exam to Belt and stipulated that the results would be admissible in court. On March 4, 2004 Belt took a polygraph test. The examiner posed only three relevant questions: (1) “Did you ever have sexual contact with [H.P.’s] private area?” (2) “Have you ever had sex with [H.P]?” and (3) “Is [H.P.] telling the truth about you having sex with her?” Belt was not asked about H.P.’s alleged diving board injury or the circumstances surrounding his offer to terminate parental rights. The polygraph examiner informed Tabor on March 16 that Belt “ha[d] been truthful in answering the ... questions.”
Several months later Tabor and Shue informed the Parkhursts by letter that they intended to issue a nolle prosequi as a result of the polygraph examination:
[We are] convinced that the event occurred and, under normal conditions, would have no compunction whatsoever in proceeding to trial in this matter. However, ... [i]n this case, because of the stipulated polygraph examination results, it is [our] belief that a grand jury would not convict the Defendant, Chad Belt....
That same day Tabor and Shue issued the nolle prosequi and suspended the Belt prosecution.
On June 6, 2007 the Parkhursts brought a § 1983 action on H.P.’s behalf against Tabor and Shue, in both their official and individual capacities, and against Sebastian County, Arkansas, alleging a violation of H.P.’s right to equal protection. 3 The Parkhursts asserted that H.P. was discriminated against as a member of a disfavored class they defined as victims of *865 incestuous sexual abuse. They sought damages, an injunction requiring the reinstatement of the charges against Belt, and a declaratory judgment that the challenged prosecutorial policy violated the equal protection clause by failing to provide to victims of incest the same protection offered to other victims of sexual assault.
Tabor, Shue, and the county moved to dismiss for failure to state a claim, arguing that as victims the Parkhursts lacked standing to subject state prosecutorial decisions to constitutional scrutiny. The district court granted the motion, explaining that prosecutorial conduct may only be subjected to such review by those with a constitutional right to the nondiscriminatory prosecution of crime. That right, according to the district court, rests with defendants subjected to discriminatory prosecution but does not accrue to the victims of crime. The Parkhursts appeal, arguing that the district court erred in dismissing their suit because the Fourteenth Amendment guarantees to crime victims the nondiscriminatory prosecution of crime.
II.
We review de novo a district court’s grant of a 12(b)(6) motion to dismiss.
Botz v. Omni Air Int’l,
Article III of the United States Constitution restricts the jurisdiction of the federal courts to actual cases and controversies. The case or controversy requirement has been effectuated by several doctrines, the most important of which is standing.
Allen v. Wright,
Consistent with these principles, crime victims have standing to challenge allegedly discriminatory prosecutorial conduct only if those victims have a constitutional right to the nondiscriminatory prosecution of crime such that its deprivation constitutes injury in fact.
Cf. Linda R.S. v. Richard D.,
In
Linda R.S.
the mother of an illegitimate child who was owed support payments sued on behalf of herself and all others similarly situated to enjoin the discriminatory application of a Texas statute criminalizing the failure to pay child support.
The Supreme Court concluded that Linda R.S. lacked standing to bring suit, explaining that “a citizen lacks standing to contest the policies of the prosecuting authority when he himself is neither prosecuted nor threatened with prosecution” because “a private citizen lacks a judicially cognizable interest in the prosecution or nonprosecution of another.”
Id.
at 619,
The lower federal courts have maintained the distinction in standing between those prosecuted by the state and those who would urge the prosecution of others, even when the failure to prosecute was allegedly discriminatory.
See United Sec. Sav. Bank,
The Parkhursts point to several cases where crime victims were determined to have a right to challenge the allegedly discriminatory provision of police protection.
See, e.g., Estate of Macias v. Ihde,
The Parkhursts claim to have been injured by a failure to prosecute Belt
*867
rather than by a failure to provide police protection to H.P., and they point to no eases which have recognized a right to compel prosecution of a wrongdoer. That the standing analysis differs depending on whether the alleged injury arises from a failure to prosecute or a failure to protect is not without rationale. While police officers are under a “statutorily imposed duty to enforce the laws equally and fairly,”
Thurman,
III.
For the foregoing reasons, the judgment of the district court is affirmed. 5
Notes
. A legal notice that a lawsuit has been abandoned. Black's Law Dictionary 1070 (7th ed.1999).
. The Honorable Robert T. Dawson, United States District Judge for the Western District of Arkansas.
. The complaint also included state claims against Belt for battery and outrage. Those claims were tried before a jury which found Belt liable for sexually abusing H.P. and awarded the Parkhursts $250,000 in compensatory damages and $750,000 in punitive damages. We recently affirmed that judgment on appeal.
See Parkhurst v. Belt,
. We note that the Parkhursts are not without other avenues to redress their grievance. Prosecutorial decisions are “discretionary public duties that are enforced by public opinion, policy, and the ballot.”
Pocomoke City,
. The motion of Tabor and Shue to strike documents from the appellants’ appendix and submission of exhibits is denied as moot.
