Stacy Prier, a former employee of the Sedgwick County Sheriffs Office, appeals a district court declaratory judgment that she is prohibited from carrying a firearm under federal law following her conviction in Municipal Court in Wichita, Kansas for disorderly conduct by fighting. Prior to final resolution of the declaratory judgment claim, Prier dismissed with prejudice her underlying claim that she was terminated from her employment in violation of the federal Family Medical Leave Act (“FMLA”). Because the FMLA claim was dismissed, no justiciable case or controversy exists as required by Article III of the constitution, and thus this case is now moot. For this reason, we DISMISS for lack of subject matter jurisdiction.
I
While employed as a Sedgwick County Deputy Sheriff, Stacy Prier slapped her husband during a domestic altercation at their home in Wichita, Kansas. She was charged with violating Wichita’s domestic battery statute and, pending resolution of the charges against her, the Sheriffs Office relieved Prier of her firearm but allowed her to continue employment as a civilian. Prier became concerned that under the Brady Act, 18 U.S.C. § 922(g)(9), she would be permanently prohibited from carrying a firearm if she was convicted of domestic battery. Such a prohibition would prevent her from continuing her employment as a Sedgwick County Deputy Sheriff because she would be unable to maintain her certification as a law enforcement officer. 1 In an effort to avoid this *1211 result, Prier’s counsel sought and obtained assurances from the prosecutor, Sedgwick County Sheriff Gary Steed, an attorney with the Sedgwick County Counselor’s office, and additional Kansas law enforcement personnel that a guilty plea to a reduced charge of disorderly conduct would not affect her certification. 2
Once Prier was sufficiently satisfied that her employment was not in jeopardy, she pled no contest to disorderly conduct by fighting in violation of Section 5.24.010(a) of the Code of the City of Wichita. 3 Soon thereafter, Prier notified her supervisors at the Sheriffs Office about the outcome of her criminal proceedings and informed them that her conviction would not preclude her reinstatement. Based on Prier’s representations, she was re-qualified for use of a firearm and resumed her position as a Deputy Sheriff.
Relations between Prier and her supervisor, Captain McKeel, grew sour during the following month. Prier tells us McKeel’s displeasure was the result of his disappointment with her numerous absences immediately following her reinstatement, despite the fact that these absences were approved as family and medical leave. In any event, Captain McKeel obtained a copy of the court records relating to her conviction, and soon notified Prier that she had been recommended for termination. Two weeks later, Prier was terminated. In a letter explaining its decision, the Sheriffs Office informed Prier that she was fired because of her lengthy disciplinary history and her Municipal Court conviction, which reflected poorly on the Sheriffs Office. The Sheriffs Office’s take on the matter was that her conviction precluded her from possessing a firearm under the Brady Act, making it impossible for her to do her job within the confines of federal law.
After failing to obtain relief through the Sheriffs Office’s internal grievance procedures and Kansas state court system, Prier filed suit in federal court against Steed, alleging retaliatory discharge under the FMLA. Steed filed a motion to dismiss, arguing that her termination was clearly justified as she was unable to perform her job because she could not possess a firearm following her Municipal Court conviction. After the district court denied Steed’s motion to dismiss, Prier amended her complaint to include a claim for a declaratory judgment that her Municipal Court conviction did
*1212
not disqualify her from carrying a sidearm under federal law. Cross-motions for summary judgment were filed by the parties on the declaratory judgment claim. While those motions were pending, the parties agreed to dismiss the FMLA claim without prejudice. Citing our unpublished decision in Woods
v. City and County of Denver,
II
Having dismissed her underlying FMLA claim with prejudice, Prier asks us to determine the validity of a defense to that claim. We cannot accommodate her request. Article III of the Constitution requires that we only decide cases or controversies, and thus prohibits us from resolving hypothetical legal questions like the one before us, relevant only to the resolution of an already dismissed dispute.
Although neither party has raised this issue, we have an obligation to conduct an independent de novo review to “determine whether a case is moot before proceeding to the merits.”
Citizens for Responsible Government State Political Action Committee v. Davidson,
“Constitutional mootness doctrine is grounded in the Article III requirement that federal courts may only decide actual ongoing cases or controversies.”
Seneca-Cayuga Tribe of Okla. v. Nat’l Indian Gaming Comm’n,
Actions under the Declaratory Judgment Act must comport with the same mootness principles as any other suit.
Cardtoons L.C. v. Major League Baseball Players Ass’n,
Prier contends that this dispute is not moot. Her “employment with the Sheriff,” she argues, “is completely dependent on the legal effect of her municipal court conviction.” Steed agrees, noting Prier dismissed her FMLA claim in exchange for the “opportunity” to be reemployed by the Sheriffs Office “subject to the decision in the declaratory judgment action.” Both parties are mistaken: Any decision on our part would not resolve a “dispute which affects the behavior of the defendant toward the plaintiff.” See
Cox,
In
Calderon v. Ashmus,
Before us, the underlying controversy between these parties is whether the Sheriffs Office illegally terminated Prier. When Prier originally filed suit in federal court alleging that her termination violated the FMLA, a case and controversy was clearly present. However, the parties no longer seek a determination as to the lawfulness of the actions of the Sheriffs Office; Prier dismissed that claim with prejudice. All that remains is a claim for a declaratory judgment with respect to a collateral legal issue, whether Steed’s affirmative defense to Prier’s claim under the FMLA was valid.
*1214
Resolution of this issue will have no coercive effect on the legal rights or obligations of either party. It is true that Prier’s employment with the Sheriffs Office as a deputy is dependent on her ability to obtain certification as a law enforcement officer. However, a declaratory judgment by this court that Prier is able to carry a firearm may provide Prier with the opportunity for reinstatement, but will not provide Prier with a legal basis to demand reinstatement, or require the Sheriffs Office to change its behavior in any way toward Prier. Moreover, Prier has not demonstrated a good chance of being likewise injured in the future: Indeed, she has dismissed her claim to having been injured at all.
See Facio v. Jones,
Steed concedes that our jurisdiction is “tenuous,” but argues we should determine, nonetheless, that jurisdiction exists in this case. His arguments are clearly meritless. That the parties stipulate that jurisdiction exists is of no import. “[N]o action of the parties can confer subject-matter jurisdiction upon a federal court. Thus, the consent of the parties is irrelevant”
Ins. Corp. of Ireland, Ltd. v. Compagnie des Bauxites de Guinee,
III
Accordingly, the case is DISMISSED.
See U.S. Bancorp Mortgage Co. v. Bonner Mall Partnership,
Notes
. 18 U.S.C. § 922(g)(9) (commonly referred to as the "Brady Act”) provides that "[i]t shall be unlawful for any person ... who has been convicted in any court of a misdemeanor crime of domestic violence, to ship or transport in interstate or foreign commerce, or possess in or affecting commerce, any firearm or ammunition; or to receive any firearm or ammunition which has been shipped or transported in interstate or foreign commerce.”
*1211 Section 921(a)(33) of title 18 defines a "misdemeanor crime of domestic violence” as an offense that:
(i) is a misdemeanor under Federal or State law; and
(ii) has, as an element, the use or attempted use of physical force or the threatened use of a deadly weapon, committed by a current or former spouse, parent, or guardian of the victim, by a person with whom the victim shares a child in common, by a person who is cohabitating with or has cohabi-tated with the victim as a spouse, parent, or guardian, or by a person similarly situated to a spouse, parent, or guardian of the victim.
. Prier's counsel admits that he discussed only the effects of a general conviction of disorderly conduct, as opposed to the more specific conviction of disorderly conduct by fighting.
. Section 5.24.010 of the Wichita Municipal Code defines "disorderly conduct” as follows:
Disorderly conduct is, with knowledge or probable cause to believe that such acts will alarm, anger or disturb others or provoke an assault or other breach of peace:
(a) Engaging in brawling or fighting; or
(b) Disturbing an assembly, meeting, or procession, not unlawful in its character; or
(c) Using offensive obscene, or abusive language or engaging in noisy conduct, tending to reasonably arouse alarm, anger or resentment in others.
. Because we conclude that the case is moot, we need not address a second underlying question raised by this appeal: whether the parties colluded to create an actual case or controversy before the district court. Steed states in his brief that, when Prier refiled her complaint after it was dismissed for lack of jurisdiction, “it was the intent of the parties [for] the [district] court to construe [certain Brady Act] provisions.” It is clearly established that colluding to create federal jurisdiction is strictly prohibited.
United States v. Johnson,
