Appeal from the United States District Court for the Western District of New York. Shawn Michael Vincent brought this action under 42 U.S.C. §1983, seeking compensatory damages for the 686 days that he was unlawfully incarcerated after this court clearly established in Earley v. Murray, 451 F.3d 71 (2d Cir.) (Earley I), reh’g denied, 462 F.3d 147 (2d Cir. 2006) (Earley II), that only a court could lawfully impose postrelease supervision (PRS). Vincent served this time for violating the terms of his PRS that the New York Department of Correctional Services (DOCS) — not his sentencing judge — had imposed. He sued various New York state officials including Anthony Annucci, then-Deputy Commissioner and legal counsel for DOCS, for the unlawful deprivation of his liberty under the Due Process Clause of the 14th Amendment of the Constitution. On appeal, Annucci challenges the district court’s award of compensatory damages to Vincent and revives his claim of qualified immunity which was previously unsuccessful. We previously held in Vincent v. Yelich, 718 F.3d 157 (2d Cir. 2013), that the unconstitutionality of administratively imposed terms of PRS was clearly established by Earley I. And we later held in Betances v. Fischer, 837 F.3d 162 (2d Cir. 2016), that because Annucci failed to make objectively reasonable efforts to comply with federal law that was clearly established by Earley I, he was not entitled to qualified immunity. Annucci offers no compelling argument for us to reconsider these prior holdings. We thus conclude that the district court (Larimer, J.) did not err in applying our prior precedents to deny him qualified immunity. We remand solely for the district court to reconsider the issue of damages. While Earley gave the state the option of either (1) arranging for defendants subject to null and void PRS terms to be appropriately resentenced or (2) excising their PRS terms, we did not decide which defendants were eligible for resentencing. We now hold that the resentencing option was not available for defendants like Vincent, who had completed their judicially imposed sentences and were incarcerated solely for violating their administratively imposed PRS terms. We remand for the district court to determine the steps that were available to Annucci, to conduct any additional fact finding that may be necessary in that regard, and to reconsider, in light of these findings and determinations, whether Vincent established his entitlement to compensatory damages. For the reasons that follow, we affirm in part and vacate in part the district court’s decision, and remand for proceedings consistent with this opinion. In a separate opinion, Judge Kearse dissents in part and concurs in part. JOHN WALKER, C.J. Shawn Michael Vincent brought this action under 42 U.S.C. §1983, seeking compensatory damages for the 686 days he was unlawfully incarcerated after this court had clearly established in Earley v. Murray, 451 F.3d 71 (2d Cir.) (Earley I), reh’g denied, 462 F.3d 147 (2d Cir. 2006) (Earley II), that only a court could lawfully impose post-release supervision (PRS). Vincent served this time for violating the terms of his PRS that the New York Department of Correctional Services1 — not his sentencing judge — had imposed. He sued various New York state officials including Anthony Annucci, then-Deputy Commissioner and legal counsel for the New York Department of Correctional Services, for the unlawful deprivation of his liberty under the Due Process Clause of the 14th Amendment of the Constitution. On appeal, Annucci challenges the district court’s award of compensatory damages to Vincent and revives his claim of qualified immunity which was previously unsuccessful. We previously held in Vincent v. Yelich, 718 F.3d 157 (2d Cir. 2013), that the unconstitutionality of administratively imposed terms of PRS was clearly established by Earley I. And we later held in Betances v. Fischer, 837 F.3d 162 (2d Cir. 2016), that because Annucci failed to make objectively reasonable efforts to comply with federal law that was clearly established by Earley I, he was not entitled to qualified immunity. Annucci offers no compelling argument for us to reconsider these prior holdings. We thus conclude that the district court (Larimer, J.) did not err in applying our prior precedents to deny him qualified immunity. We remand solely for the district court to reconsider the issue of damages. While Earley gave the state the option of either (1) arranging for defendants subject to null and void PRS terms to be appropriately resentenced or (2) excising their PRS terms, we did not decide which defendants were eligible for resentencing. We now hold that the resentencing option was not available for defendants like Vincent, who had completed their judicially imposed sentences and were incarcerated solely for violating their administratively imposed PRS terms. We remand for the district court to determine the steps that were available to Annucci, to conduct any additional fact finding that may be necessary in that regard, and to reconsider, in light of these findings and determinations, whether Vincent established his entitlement to compensatory damages. For the reasons that follow, we affirm in part and vacate in part the district court’s decision, and remand for proceedings consistent with this opinion. BACKGROUND This appeal is the second in this case but part of a decades-long series of litigations over DOCS’s unconstitutional imposition of PRS and re-incarceration of felons who violated the terms and conditions of their unlawful PRS. Accordingly, some familiarity with this court’s sequence of decisions is presumed. Vincent’s Incarceration We draw the following undisputed facts from the district court’s summary judgment decision in favor of Vincent. In 2001, Vincent pled guilty and was sentenced to five years’ imprisonment. At the time, New York law required that every determinate sentence2 for a repeat violent felony offender, like Vincent, be followed by a five-year term of PRS.3 The state court did not impose PRS at Vincent’s sentencing. Vincent’s imposed sentence expired on October 4, 2005, but he was conditionally released on January 15, 2005 for good conduct. Following his conditional release, DOCS unilaterally imposed a five-year PRS term. On October 14, 2005, ten days after his judicially imposed determinate sentence ended, Vincent was arrested for possessing a credit card, which was a violation of a condition of his PRS, and taken into custody. Nearly a year later, on August 29, 2006, while Vincent was in custody, a state judge determined that he had violated the terms of the administratively imposed PRS. He was released on March 21, 2007 after completing this sentence. Two weeks later, on April 5, Vincent was again arrested for violating his PRS, this time because he failed to report an address change. He was immediately reincarcerated and sentenced to an additional two years. While Vincent was in custody awaiting adjudication of his first PRS violation, this court held in Earley v. Murray that PRS terms that are not imposed by a judge are unconstitutional and are thus null and void.4 In March 2008, while serving the sentence for his second PRS violation, Vincent filed a state habeas petition asserting that his incarceration for the PRS violations was unconstitutional, which was granted. Vincent was released in July 2008. Separately, by form letter dated June 1, 2008 — nearly two years after we decided Earley — Annucci, DOCS’s legal counsel, advised Vincent’s sentencing judge that he had not imposed a PRS term in 2001 and requested that the judge either hold a hearing to determine whether to resentence Vincent or direct DOCS to release him. The state sentencing judge never resentenced Vincent; nor did that judge ever issue an order in response to Annucci’s letter. Procedural History Vincent was incarcerated for 686 days for violating the terms of his PRS after the Second Circuit’s August 31, 2006 decision in Earley II denying rehearing of Earley I.5 He brought the instant civil action under §1983, seeking damages from Annucci and others for DOCS’s unlawful imposition and enforcement of PRS, including Vincent’s arrests and incarceration. The district court initially granted Annucci’s motion to dismiss, ruling that Annucci was entitled to qualified immunity.6 This court reversed and remanded, holding that Earley “clearly established that DOCS violated federal law in adding PRS terms to the sentences of prisoners who had not received such terms from the court.”7 As for Annucci’s personal involvement, the record in Vincent I established Annucci’s “relevant responsibilities,” including his position as “chief legal advisor” for DOCS and his acknowledged responsibility “for all of the legal services” in his “capacity as the head of counsel’s office.”8 The Vincent I panel also acknowledged Annucci’s testimony in another case that he was “aware” of Earley shortly after its issuance in 2006, but that he “did not agree with that decision” and that he “did not begin a resentencing initiative” “at that time.”9 The Vincent I panel remanded for the district court to develop further the factual record to determine “the objective reasonableness of Annucci’s efforts to relieve [plaintiffs] of the burdens of those unlawfully imposed terms after he knew it had been ruled that the imposition violated federal law.”10 Independently, after Vincent’s case was remanded to the district court, a §1983 suit on behalf of a class of individuals subjected to administratively imposed PRS was filed against Annucci and other DOCS officials.11 Annucci again asserted a qualified-immunity defense in that case, Betances v. Fischer.12 On appeal, a panel of this court in Betances held that Annucci’s entitlement to qualified immunity extended only to August 31, 2006 — when the Earley court denied the petition for rehearing — after which it was clearly established that administratively imposed PRS violated federal due process guarantees.13 The court also held that for 19 months after August 31, 2006, Annucci failed to take objectively reasonable steps to comply with Earley.14 Annucci acknowledged that he understood that Earley required him to change DOCS’s policies and customs to conform with federal law, that “nothing prevented” him from doing so, and that he “affirmatively decided not to do so” for over a year and a half.15 The court rejected Annucci’s attempt to shift blame to the state courts, which he argued resisted implementing Earley’s holding.16 Their conduct did not bear on whether Annucci took objectively reasonable steps after it was clearly established that DOCS-imposed PRS terms violated federal law.17 With the benefit of the Betances decision, Vincent and Annucci each moved for summary judgment in this case. Vincent moved for a finding that Annucci violated his constitutional rights, and that he was entitled to compensatory damages. Annucci again moved to dismiss the complaint as barred by qualified immunity. In the alternative, Annucci sought to limit Vincent’s recovery to nominal damages. According to Annucci, Vincent was at most “deprived of his due process right to have a judge pronounce his PRS term” and would have remained incarcerated anyway, so he suffered no actual injury for which he could be compensated.18 Relying on controlling circuit case law, the district court denied Annucci’s claim to qualified immunity. The district court also rejected Annucci’s alternative nominal-damages argument and granted Vincent’s motion for compensatory damages as a matter of law. It concluded that “but for Annucci’s failure to promptly excise Vincent’s PRS or to refer him for curative resentencing,” Vincent might have been spared some part of the 686 days he was incarcerated.19 That was sufficient for the district court to find that Vincent was injured without it engaging in what it deemed “baseless speculation” as to what might have happened to Vincent had Annucci complied with Earley.20 The district court then held a hearing on the amount of damages and, based on the parties’ submissions, awarded Vincent $175,000. Annucci timely appealed. DISCUSSION Annucci appeals the district court’s grant of summary judgment as to Vincent’s entitlement to compensatory damages. He also reiterates that he is entitled to qualified immunity. I. Qualified Immunity As noted earlier, we have previously heard and rejected Annucci’s qualified-immunity argument. Generally, we review a denial of qualified immunity de novo.21 But Annucci concedes — as he must — that this “panel is bound by this Court’s decision in Vincent [I] denying [him] qualified immunity.”22 We are also bound by our related decision in Betances, which held that Annucci’s unexcused delay in complying with Earley was objectively unreasonable.23 In his brief, Annucci claims that the Vincent I court “erroneously focused only on federal case law” to hold that the unconstitutionality of administratively imposed PRS terms was “clearly established.”24 In Vincent I, however, we made it clear that “[f]or a right to be ‘clearly established’ for purposes of qualified immunity, it is sufficient if decisions of the Supreme Court or of the appropriate circuit have defined the contours of the right with reasonable specificity.”25 Vincent I appropriately relied on Earley’s “explicit ruling” that “New York’s Department of Correctional Services has no…power to alter a sentence.”26 Annucci’s suggestion that, because certain lower state court decisions initially rejected Earley’s logic, the law was not clearly established has no merit. While we may “look to state court decisions to determine if a federal right has been clearly established,”27 we had no need to do so in Vincent I. Earley was a decision that this court had issued. Under the Supremacy Clause of the Constitution, it was binding on state courts and state officials, regardless of their willingness to accept it. II. Vincent’s Entitlement to Compensatory Damages A §1983 plaintiff must establish that a person acting under the color of state law deprived him of a right guaranteed by the Constitution or the laws of the United States.28 The burden is “normally on the plaintiff to prove each element of a §1983 claim, including those elements relating to damages.”29 “The cardinal principle of damages in Anglo-American law is that of compensation for the injury caused to plaintiff by defendant’s breach of duty.”30 For that reason, a plaintiff seeking compensatory damages in a §1983 suit must prove more than just a deprivation of his rights; he must also establish that the “deprivation caused him some actual injury.”31 If he cannot marshal that proof, he is at most entitled to collect nominal damages. Similarly, “[w]hen a defendant has deprived the plaintiff of liberty, but the adverse action would have been taken even in the absence of the wrongful conduct, the plaintiff is entitled only to nominal damages.”32 This sort of analysis requires the court to reconstruct what would have “occurred had proper procedure been observed.”33 As we have previously explained, Annucci’s liability “arose from [his] unreasonable delay in acting to comply with Earley I for many months after that decision,”34 not from the initial pre-Earley imposition of PRS.35 The sole issue before us now is the question of damages that resulted from Annucci’s liability. The dispositive issue is whether, in moving for summary judgment, Vincent established that he suffered an injury as a result of Annucci’s failure to follow our directive in Earley that would not have occurred otherwise. The district court relied on the undisputed facts that Annucci did not promptly refer Vincent for a resentencing following Earley and that Vincent was not released until nearly two years after that decision. Rather than address what might have happened to Vincent had Annucci acted responsively to Earley, the court simply declared it would instead “forever remain a mystery.”36 In so doing, the court improperly declined to consider what steps were feasibly and legally available to Annucci, did not discuss Vincent’s burden of proving damages, and did not determine whether Vincent had met that burden. The district court’s cursory treatment of damages causation does not comport with our precedent and thus warrants remand and reconsideration. As the district court proceeds on remand, it should be mindful of the following. Earley held that the practice of administratively imposing PRS was unconstitutional, rendering any such PRS null and void. As we explained in Vincent I, Earley did not absolve New York of its unconstitutional conduct and announce a prospective rule that would affect only future defendants.37 It was incumbent on the state to rectify the constitutional violations that were ongoing. As to those affected persons, the state “was required” to arrange for people to be “resentenced by the court for the imposition of PRS terms in a constitutional manner or…excise the PRS conditions from their records and relieve them of those conditions.”38 While we indicated in Earley that our ruling was “not intended to preclude the state from moving in the New York courts to modify [the defendant's] sentence to include the mandatory PRS term,”39 we expressed no opinion then as to which defendants were constitutionally eligible for resentencing. Since Earley, we have held that there is no constitutional bar to resentencing defendants who were incarcerated and serving determinate sentences without a judicially imposed PRS term.40 “[S]o long as the defendant properly remains imprisoned, he can have no legitimate expectation of finality in a sentence that, illegally, does not provide for his post-release supervision….”41 But the same cannot be said for those defendants, like Vincent, who had served their judicially imposed determinate sentences and who had been released from custody, only to be re-incarcerated for violating the terms of their administratively imposed PRS. Annucci acknowledges that the New York Court of Appeals held in 2010 that resentencing after a defendant completed the lawful portion of his sentence and had been released from custody violates the Double Jeopardy Clause of the federal constitution.42 But he insists that, at the time Vincent could have been resentenced, it was not clearly established that principles of double jeopardy prohibited obtaining resentencing for defendants who had been released.43 Therefore, Annucci asserts that, had he promptly referred Vincent for judicial resentencing after Earley, the state court would have likely imposed PRS nunc pro tunc. This assertion is without merit. Any hypothetical referral and resentencing would have taken place after DOCS had imprisoned Vincent for a PRS violation.44 Implicit in Annucci’s argument is the assumption that a court could retroactively ratify an incarceration that was based upon a null and void act by DOCS. For defendants like Vincent, resentencing was not an available corrective measure for the simple reason that their incarceration was a consequence of an unconstitutional sentence that DOCS, not the court, had imposed. While courts have inherent authority to correct their own errors,45 the error here was not made by a court, but by DOCS. Because only courts can impose a valid sentence, the unconstitutional PRS term that Annucci imposed on Vincent was a “nullity” from its inception.46 Earley was clear that “any additional penalty added to th[e] sentence by another authority is invalid, regardless of its source, origin, or authority until the judge personally amends the sentence.”47 So, the consequences that flowed from the administratively imposed PRS — including Vincent’s PRS-based incarceration — were likewise unauthorized and without legal effect. Put differently, a defendant, like Vincent, who was incarcerated for violating the terms of an administratively imposed PRS could not have been resentenced nunc pro tunc for the simple reason that courts do not have the power to substantively rewrite history or backdate events.48 “Incantation of Latin phrases does not bestow such an Orwellian power.”49 Nunc pro tunc orders serve the limited purpose of correcting clerical errors in the record.50 But Vincent’s record contained no such error; it correctly reflected that no PRS was imposed by a court — the only body that could legally impose it. Resentencing “for the imposition of PRS terms”51 connotes amending the sentence to add PRS in the first instance. Once a defendant serves his original sentence, however, a court cannot reverse the “error” and retroactively validate DOCS’s ultra vires and unlawful imposition of PRS.52 Although resentencing may have been an option for certain defendants, it was not — as we clarify today — a viable avenue with respect to Vincent.53 The remaining option, as we outlined in Earley, was to excise the terms of the null and void administratively imposed PRS and relieve Vincent of the conditions associated with it.54 The only open question is whether DOCS needed court approval to eliminate the PRS term that it alone had imposed. At a minimum, Annucci was obligated to “at least attempt to cease [DOCS's] administrative and custodial operations that had been held to violate federal law.”55 And, as a state official, Annucci was not permitted to flout the Constitution or federal law, even if there were state laws to the contrary.56 On the record before us, it is not clear whether there was any impediment, legal or otherwise, to Annucci’s simply and unilaterally releasing Vincent.57 Accordingly, on remand, we direct the district court to clarify that question, bearing in mind that the burden rests upon the plaintiff to establish the onset date for calculating any compensatory damages to which he may be entitled. If no such impediment existed, the plaintiff will have satisfied his burden upon the existing record. If an impediment is claimed, the district court must determine its validity and effect, if any, upon the length of Vincent’s unlawful incarceration.58 The district court should conduct any additional fact-finding as may be required. Only then can the district court properly determine whether Vincent has carried his burden of proving the extent to which he is entitled to compensatory damages. CONCLUSION For the foregoing reasons, we affirm in part and vacate in part the district court’s decision, and remand for proceedings consistent with this opinion. The Clerk of Court is directed to refer this case to this panel in the event of any future appeal. KEARSE, Circuit Judge, dissenting: I respectfully dissent from so much of the majority opinion as vacates the district court’s award of compensatory damages to plaintiff Shawn Michael Vincent from defendant Anthony Annucci for unreasonably prolonging Vincent’s unconstitutional reincarceration, in defiance of this Court’s ruling in Earley v. Murray, 451 F.3d 71 (2d Cir.), (“Earley I” or “Earley”), rehearing denied, 462 F.3d 147 (2d Cir. 2006), that the administrative process that was the foundation for reincarceration was constitutionally unauthorized, null, and void. Vincent, after serving the entire sentence that was lawfully imposed on him by a state court, was arrested and reimprisoned twice for violations of postrelease supervision conditions (“PRS”) that had been administratively imposed on him by the Department of Correctional Services (“DOCS”) in violation of the United States Constitution. For those PRS violations — consisting of noncriminal conduct, i.e., changing his address without informing his PRS parole officer in advance and possessing a credit card — he was imprisoned for a total of nearly two years. The district court found that 686 of those days fell after Earley had been decided and become final; that it was appropriate to allow a 90-day period for Annucci to take action to comply with Earley; and that Vincent should therefore be compensated for a total of 596 days of his unconstitutional imprisonment. Although we are unanimous in rejecting Annucci’s renewed contention that he is entitled to qualified immunity from paying money damages for such violations — a contention definitively rejected in Betances v. Fischer, 837 F.3d 162 (2d Cir. 2016) (“Betances”) — I am unable, for the reasons set out in Part A below, to see that the majority’s decision to remand to the district court to determine whether there was “any impediment, legal or otherwise, to Annucci’s simply and unilaterally releasing Vincent,” Majority Opinion ante at 18, is reconcilable with the record in this case. As documented in Parts A and B below, the record includes Annucci’s deposition admissions that whether “to either take action or not take action” to comply with Earley was his decision; that Annucci “deci[ded] not to follow [Earley's] holding” and instructed DOCS personnel “not [to] follow [Earley]“; that Vincent spent 687 days imprisoned “[a]s the result of the unlawful imposition of post release supervision”; and that “Annucci acknowledged that…’nothing prevented‘ him from” “chang[ing] DOCS’s policies and customs to conform with federal law,” Majority Opinion ante at 9 (quoting Betances, 837 F.3d at 172 (emphasis mine)). The majority’s suggestion that there may have been “any impediment” is contrary both to Annucci’s acknowledgement that there was “nothing,” and to his formal pleading in this action that his alleged conduct was within his “official…discretionary authority”. We are also unanimous that as a matter of law, Vincent could not constitutionally have been kept imprisoned after Earley by having him resentenced to PSR. See Majority Opinion ante at 5, 15-17. Thus, under Earley, DOCS was required to release Vincent from his unconstitutional reimprisonment. Given Annucci’s claim that he had “discretion[]” to make the decisions he did and to follow the course of inaction he chose in disregard of Earley for some 14-19 months, and his acknowledgement that “ nothing prevented” him from complying with Earley, the majority’s remand — suggesting that Annucci may be excused from paying compensatory damages if it is determined that “Vincent would have been incarcerated for some period despite Annucci’s best efforts to secure his release,” Majority Opinion ante at 19 n.58 (emphasis added) — makes no sense to me. Any suggestion that Annucci used his best efforts to secure the release of any unconstitutionally imprisoned PRS violators is foreclosed by the ruling in Betances, 837 F.3d at 173, that Annucci’s delay was “objectively unreasonable.” A. Annucci’s Liability I am in agreement with most of the majority opinion describing prior liability-related rulings of this Court as to DOCS’s unconstitutional policy and practice of administratively imposing PRS on certain prisoners whose judiciallyimposed sentences did not include PRS, including Earley I, 451 F.3d 71 (holding that DOCS practice unconstitutional); Vincent v. Yelich, 718 F.3d 157 (2d Cir. 2013) — the original name of the present case — (hereafter “Vincent I”); and Betances, 837 F.3d 162. Annucci “[a]t all times relevant to this matter” was DOCS’s “Deputy Commissioner and Counsel,” and “was responsible for DOCS legal services.” (Joint Stipulations dated November 23, 2020, Facts Not in Dispute (“Stipulated Facts”)