Physicians enrolled in the Louisiana Patient’s Compensation Fund challenge the constitutionality of a state statute denying abortion providers the benefits of participation in the Fund. They seek to enjoin the Patient’s Compensation Fund Oversight Board from using that statute to prevent processing and paying of abortion-related claims. The district court determined that the members of this Board were entitled to Eleventh Amendment immunity because they lacked sufficient connection with the challenged statute. We disagree and therefore REVERSE and REMAND.
I. STATEMENT OF FACTS
Hope Medical Group for Women (“Hope”) provides women’s health services, including elective abortions, in Shreveport, Louisiana. Plaintiffs K.P. and D.B. are both physicians who perform abortions at Hope.
Both K.P and D.B. are enrolled in the Louisiana Patient’s Compensation Fund. The Fund was created by the 1975 Medical Malpractice Act (“the Med-Mal Act”) in an effort to control the costs of medical malpractice insurance. The Fund’s purpose is to make uniform compensation to patients claiming injuries as a result of medical malpractice. The Fund is a voluntary program for which all licensed and certified healthcare providers are eligible.
Participation in the program requires a healthcare provider to file an application and proof of financial responsibility with the Patients’ Compensation Fund Oversight Board (“the Board”), which administers the Fund. Financial responsibility can be shown either by medical malpractice insurance coverage or $125,000 in cash or cash equivalents. Participating providers must also pay annual surcharges based on the risks associated with their respective practices and the claims history in those areas.
Healthcare providers that meet these requirements and pay the applicable charges are deemed qualified and are issued a certificate of enrollment. Once enrolled in the program, providers are eligible for significant benefits. Among these benefits is a cap on medical malpractice liability. A Fund participant’s personal liability is limited to $100,000. Any damages in excess of that amount are paid by the Fund. Total recovery is limited to $500,000 plus future medical expenses. Qualified providers are also entitled to a medical review panel’s expert opinion on whether the provider violated the standard of care. The panel’s report is admissible in any subsequent civil proceeding.
In June 2007, a former Hope patient named Brittany Prudhome requested the formation of a Fund medical review panel to assess claims for injuries sustained during an abortion at Hope. Prudhome’s complaint sought damages for medical negligence. She identified as defendants Doctors K.P. and D.B., as well as the clinic.
After reviewing her claim, the Board in July 2007 informed Prudhome that neither K.P. nor D.B. was qualified for Fund coverage as to her claim. The Board cited Louisiana Revised Statute Section 9:2800.12 as the reason it refused Prudhome’s claim. That 1997 statute defines the tort liability of physicians who perform abortions. A doctor is liable for “any damage occasioned or precipitated by the abortion,” including “injuries suffered or damages occasioned by the unborn child .... ” La.Rev.Stat. Ann. § 9:2800.12(A), (B)(2). It further provides that “laws governing medical malpractice or limitations of liability thereof provided in [the Medical Mai-*120practice Act] are not applicable to this Section.” Id. § 9:2800.12(0(2).
Based on Section 9:2800.12, the Board reasoned that abortion providers were not entitled to participate in the Fund for abortion-related procedures. Despite the two doctors’ enrollment in the Fund, the Board refused to convene a review panel to hear Prudhome’s complaint. Prudhome subsequently filed suit against the doctors and Hope in state court.
In November 2007, the doctor identified as K.P. filed suit in the United States District Court for the Middle District of Louisiana. The Defendants were the members of the Board and also Lorraine LeBlanc, the Fund’s Executive Director, named in their official capacities. Later, Hope and the doctor identified as D.B. became Plaintiffs. The suit challenged the constitutionality of Section 9:2800.12 both on its face and as applied. Specifically, Plaintiffs contended that the statute is unconstitutionally vague and violates the rights of physicians and their patients to equal protection and privacy as guaranteed by the Fourteenth Amendment. Plaintiffs requested declaratory and injunctive relief.
The Defendants filed a motion to dismiss on the grounds that they are immune from suit under the Eleventh Amendment. The district court dismissed the action, concluding that the statute in question did not charge these defendants with any particular enforcement authority. This appeal followed.
II. DISCUSSION
A. Mootness
After litigation commenced in this case, the Board in March 2008 agreed to convene a medical review panel to assess Prudhome’s claims. In correspondence with Prudhome’s attorney, the Board expressed a willingness to review the merits of her action but reserved the right to refuse payment if the Board later determined that abortion-related procedures were not covered by the Med-Mal Act. Defendants now assert that their determination to admit Prudhome’s claim against the Plaintiffs moots this action.
Mootness exists when the actual controversy among the parties has ended. Ctr. for Individual Freedom v. Carmouche, 449 F.3d 655, 661 (5th Cir.2006). If accepting the claim for processing gives to the Plaintiffs everything the Defendants could properly be ordered to do by a court in this lawsuit, mootness might have arisen. The constitutional issues at the core of this litigation would be for another cast of players.
To understand whether the case is moot, we need to understand the role of the Defendants regarding a claim such as that presented by Prudhome. Among the actions the Board takes is to decide — as a gatekeeper, to use the parties’ word— whether the claim is one it may accept. The Board has now changed positions on that, from its July 2007 denial to its March 2008 acceptance. In a letter dated March 12, 2008, the Board stated that the claim would be considered by a medical review panel. Relevant to mootness, though, the Board reserved its right to deny the coverage of the Fund if it is determined that the claim was not “malpractice” as defined by state law. The reservation was capitalized, presumably, because of its importance:
THE PATIENT’S COMPENSATION FUND AND THE OVERSIGHT BOARD RESERVE THE RIGHT TO DENY PCF COVERAGE FOR THOSE ALLEGATIONS DETERMINED TO BE OUTSIDE OF THE SCOPE OF MALPRACTICE AS DEFINED IN THE MEDICAL MALPRACTICE ACT.
*121Section 9:2800.12 was not cited, but it was the unnamed potential barrier to use of the Fund. The Board did not commit the medical review panel to completing its usual process for a claim and preparing a report.
The difficulties the panel would have in preparing a report can be seen from the panel procedures and responsibilities set out at some length in a section of the MedMal Act. See La.Rev.Stat. Ann. § 40:1299.47. The panel is to receive evidence, consult with experts if it desires, and then “express its expert opinion as to whether or not the evidence supports the conclusion that the defendant or defendants acted or failed to act within the appropriate standards of care.” Id. § 1299.47(F), (G). The panel report is admissible in a medical malpractice action. Id. § 1299.47(H). Section 9:2800.12, though, might make the report irrelevant because it provides that no standard of care will apply to damages resulting from abortions. Id. § 9.2800.12. Thus, it could be that the panel or the Board may decide that the report is useless to an abortion claim under Section 9:2800.12 and end up not preparing one. We find no concession by the Defendants that the medical review panel will actually prepare a report that will state an opinion on whether medical malpractice occurred.
The Board would again become involved in a claim such as Prudhome’s at least by the time of a settlement between a patient and the abortion providers, or after a civil action were concluded. That is when the Board would decide whether an amount greater than the $100,000 that the medical provider has to pay should be paid by the Fund. Id. § 1299.44(B)(2)(A). We do not see specific reference in that section to an obligation of the Board to determine whether the claim is one covered by the Fund. Elsewhere, though, the Med-Mal Act declares that the Fund is not “liable for any sums except those arising from medical malpractice.” Id. § 1299.41(1). The Med-Mal Act under which the Fund operates is specifically made inapplicable by Section 9:2800.12.
We know from the evidence that the Board has taken the position that the Fund is not available to pay claims that are affected by Section 9:2800.12. That view is unremarkable, as the statute clearly prohibits use of the Fund for abortion claims that are brought under Section 9:2800.12. A Louisiana “administrative agency does not have the authority to determine the constitutionality of statutes.” Albe v. La. Workers Comp. Corp., 700 So.2d 824, 828 (La.1997). The Board has to apply statutes as written. This litigation calls on the Board to defend the statute, not to question it.
The only basis argued for mootness is that in March 2008, the Board agreed after this litigation commenced to have the Prudhome claim considered by a medical review panel. At best, this is a voluntary cessation of one effect of the earlier announced refusal to allow use of the Fund for abortion claims. Voluntary cessation even of all the conduct being challenged in a lawsuit does not moot a case. Sossamon v. Lone Star State of Tex., 560 F.3d 316, 324 (5th Cir.2009). A defendant, without court compulsion, could legally return to its former ways. The defendants, who are the ones asserting mootness, must convince us that there is no reasonable prospect that what the plaintiffs allege as the cause of their injury will recur. Friends of the Earth, Inc. v. Laidlaw Envtl. Servs., Inc., 528 U.S. 167, 189, 120 S.Ct. 693, 145 L.Ed.2d 610 (2000). We are not convinced.
This suit is not moot.
*122 B. Standing
Neither party has raised the issue of standing. We should address standing, though, when there exists a significant question about it. See Doe v. Tangipahoa Parish Sch. Bd., 473 F.3d 188, 194 (5th Cir.2006). We raise the point because of the similarity of the present action to a case heard en banc by this court in 2001. Okpalobi v. Foster, 244 F.3d 405 (5th Cir.2001) (en banc). There, a physician who performed abortions challenged the constitutionality of Section 9:0028.12. Id. at 409. Like the Plaintiffs here, a doctor sought to enjoin enforcement of the statute. Id. Named as defendants in that suit were the Attorney General and the Governor of Louisiana, who asserted Eleventh Amendment immunity as a defense. Id. at 410.
The district court in Okpalobi declared the statute unconstitutional; a panel of this Court affirmed. Okpalobi v. Foster, 190 F.3d 337 (5th Cir.1999), superseded by Okpalobi, 244 F.3d 405 (en banc). The en banc Court reversed the district court because ten of the fourteen judges agreed that the Plaintiffs lacked Article III standing. Okpalobi, 244 F.3d at 429.
Article III of the United States Constitution grants jurisdiction to the federal courts only over claims that constitute “cases” or “controversies.” U.S. Const. art. III, § 2, cl. 1. Federal courts should exercise power only “in the last resort[] and as a necessity ... and only when adjudication is consistent with a system of separated powers and the dispute is one traditionally thought to be capable of resolution through the judicial process.” Allen v. Wright, 468 U.S. 737, 752, 104 S.Ct. 3315, 82 L.Ed.2d 556 (1984) (citations, brackets, and quotation marks omitted).
Article III standing requires an injury-in-fact caused by a defendant’s challenged conduct that is redressable by a court. Lujan v. Defenders of Wildlife, 504 U.S. 555, 560-61, 112 S.Ct. 2130, 119 L.Ed.2d 351 (1992). We discuss all three components.
1. Injury-in-fact
An injury sufficient to confer standing is both “concrete and particularized” and “actual or imminent.” Croft v. Governor of Tex., 562 F.3d 735, 745 (5th Cir.2009). The initial alleged injury was the failure of the defendants to convene a medical review panel. A panel was subsequently convened, a fact we discussed earlier regarding mootness. Plaintiffs also complain that they sustained actual pecuniary injuries when they were refused the benefits otherwise associated with their paid membership in the Fund. For example, they are subject to unlimited liability for the performance of abortion procedures because the liability caps of the Fund are not being applied to their abortion patients. The uncapped liability likely affects malpractice insurance rates.
We conclude that being denied these and other protections of the MedMal Act is a “direct pecuniary injury” that generally is sufficient to establish injury-in-fact. See Henderson v. Stalder, 287 F.3d 374, 379 (5th Cir.2002).
Admittedly, the injury alleged here is not as concrete as some might be. The Plaintiffs’ liability for suits filed by Prudhome or other future patients has not yet materialized. Still, both this court and the Supreme Court have generally permitted future events which are sufficiently likely to occur to serve as a basis for standing when the plaintiffs, as here, are seeking injunctive relief. For example, the Supreme Court has determined that a “real and immediate threat of future injury” is sufficient to confer standing to pursue an injunction so long as that threat is not merely conjectural. City of L.A. v. Lyons, *123461 U.S. 95, 107 n. 8, 103 S.Ct. 1660, 75 L.Ed.2d 675 (1983). We have also held that in order to have standing to seek injunctive relief, plaintiffs must demonstrate that they are “likely to suffer future injury by the defendant.” James v. City of Dallas, 254 F.3d 551, 563 (5th Cir.2001). Given the imminent threat posed by Prudhome’s suit — and the probability of future suits of the same type — it is sufficiently likely that the physicians will face liability for abortion-related procedures.
Plaintiffs have alleged a sufficient injury-in-fact.
2. Causation
Whether a defendant’s actions caused a plaintiffs injuries must be assessed. The Defendant Board is responsible for administering the benefits the Plaintiffs claim to have been denied. Members of the Board serve as initial arbiters of compensable claims under the Fund. Although the Board cannot prevent a private litigant from pursuing relief in Louisiana court, it can unilaterally preclude the Plaintiffs from claiming the benefits of limited liability and independent medical review. It can subsequently refuse to recognize the right to call on the Fund to pay a settlement or court judgment. This places the Defendants among those who would contribute to Plaintiffs’ harm. The Board is the body with the initial authority to disburse or withhold the benefits associated with Fund membership.
Although the Board’s decision could be overridden by a court, that does not block the tracing of the injury to these Defendants. Tracing an injury is not the same as seeking its proximate cause. Bennett v. Spear, 520 U.S. 154, 168-69, 117 S.Ct. 1154, 137 L.Ed.2d 281 (1997). Because the Defendants significantly contributed to the Plaintiffs’ alleged injuries, Plaintiffs have satisfied the requirement of traceability.
S. Redressability
Redressability was a key basis for the Okpalobi court’s holding that those plaintiffs did not have standing. Okpalobi, 244 F.3d at 426-28. The court concluded that the Governor and Attorney General could not prevent private litigants from prosecuting causes of action pursuant to Section 9:2800.12. Id. at 428-29. The Board cannot either. The Board can, though, start the process for considering a claim against an abortion provider under the Med-Mal Act, or it can refuse to do so. Until March 2008, it refused. Even if the Board convenes a medical review panel, what the panel would do is unclear. It is supposed to state an opinion about whether a physician has met the standard of care. For abortion claims under Section 9:2800.12, though, such a standard may not matter. Finally, the Board can refuse to pay a claim if it determines malpractice legally was not involved.
We acknowledge that the Board is far from the sole participant in the application of the challenged statute. For example, litigants may bypass the Board and proceed directly in the courts. But at several points, Section 9:2800.12 impacts the Board’s actions sufficiently to confer standing on these Plaintiffs. “[A] plaintiff satisfies the redressability requirement when he shows that a favorable decision will relieve a discrete injury to himself. He need not show that a favorable decision will relieve his every injury.” Larson v. Valente, 456 U.S. 228, 243 n. 15, 102 S.Ct. 1673, 72 L.Ed.2d 33 (1982). This distinguishes the Board’s role from that of the Governor and Attorney General in Okpalobi Those two officials were found not to have “any duty or ability to do anything'” relating to enforcement of the statute. *124Okpalobi, 244 F.3d at 427. Here, the Board has definite responsibilities relating to the application of Section 9:2800.12. Perhaps this distinction was sufficiently obvious that the Defendants decided not to contest standing.
Plaintiffs have standing to seek relief from these Defendants.
C. Eleventh Amendment Immunity
The Eleventh Amendment bars suits by private citizens against a state in federal court. See Hutto v. Finney, 437 U.S. 678, 700, 98 S.Ct. 2565, 57 L.Ed.2d 522 (1978). The bar applies not only to the state itself, but also protects state actors in their official capacities. See Nelson v. Univ. of Tex. at Dallas, 535 F.3d 318, 320 (2008).
We review de novo a district court’s order granting a motion to dismiss on Eleventh Amendment grounds. Hudson v. City of New Orleans, 174 F.3d 677, 682 (5th Cir.1999).
The Supreme Court carved out a narrow exception to the Eleventh Amendment in Ex Parte Young, 209 U.S. 123, 28 S.Ct. 441, 52 L.Ed. 714 (1908). The rule is based on the legal fiction that a sovereign state cannot act unconstitutionally. Id. at 159, 28 S.Ct. 441. Thus, where a state actor enforces an unconstitutional law, he is stripped of his official clothing and becomes a private person subject to suit. Id. at 160, 28 S.Ct. 441.
In order to use the Ex Parte Young exception, a plaintiff must demonstrate that the state officer has “some connection” with the enforcement of the disputed act. Id. at 157, 28 S.Ct. 441. The connection requirement exists to prevent litigants from misusing the exception. There are plenty of state actors. A plaintiff must show that the defendant state actors “have the requisite ‘connection’ to the statutory scheme to remove the Eleventh Amendment barrier to suits brought in federal court against the State.” Okpalobi 244 F.3d at 410-11.
Ex Parte Young gives some guidance about the required “connection” between a state actor and an allegedly unconstitutional act. “The fact that the state officer, by virtue of his office, has some connection with the enforcement of the act, is the important and material fact, and whether it arises out of the general law, or is specially created by the act itself, is not material so long as it exists.” Ex Parte Young, 209 U.S. at 157, 28 S.Ct. 441.
Defendants rely heavily on the lead opinion in Okpalobi for the proposition that a “special” relationship — not just “some connection” — needs to exist. Okpalobi, 244 F.3d at 414. Because that part of the en bane opinion did not garner majority support, the Eleventh Amendment analysis is not binding precedent. See United States v. Ferguson, 211 F.3d 878, 885 (5th Cir.2000).
We need not resolve whether Ex Parte Young requires only “some connection” or a “special relationship” between the state actor and the challenged statute. We conclude that the Board falls within Ex Parte Young under either standard. As noted above, the state actor must be connected with an act’s “enforcement” for the exception to apply. Ex Parte Young, 209 U.S. at 157, 28 S.Ct. 441. “Enforcement” typically involves compulsion or constraint. Webster’s Third New International Dictionary 751 (1993). By excluding abortion-related procedures from the coverage of the Med-Mal Act, Section 9:2800.12(0 implicitly requires the Board to differentiate between claims allowable and not allowable under the statute. By saying that only malpractice claims can be paid from the Fund, the Med-Mal Act also requires the *125Board to determine whether a claim presented to it has been statutorily excluded by Section 9:2800:12 from coverage. La. Rev.Stat. Ann. § 40:1299.41(1).
In summary, the Board’s role starts with deciding whether to have a medical review panel consider abortion claims and ends with deciding whether to pay them. By virtue of these responsibilities, Board members are delegated some enforcement authority. Indeed, the evidence in this record indicates that the Board took an active role in enforcing Section 9:2800.12 as to Brittany Prudhome. When she brought her claim to the Board, she was instructed that she was without recourse under the Fund and should instead submit her claim to the courts. The Board enforces Section 9:2800.12 by applying its prohibitions.
The Defendants have the requisite connection with Section 9:2800.12 to fall within the Ex Parte Young exception. Consequently, this suit is not barred by the Eleventh Amendment.
We REVERSE and REMAND for further proceedings.