Reguli v. Hetzel (6th Cir. 2026): Immunity Shields Officials for Prosecution Based on an Unsettled Statute, and Monell Ratification Requires a Final Policymaker

I. Introduction

This appeal arose from a child-custody removal dispute that escalated into criminal prosecution and then civil-rights litigation. Connie Reguli (a lawyer and parents’ rights activist) and Wendy Hancock (a mother) helped evade enforcement of a Tennessee juvenile-court removal order placing Hancock’s child, B.B., in the custody of the Tennessee Department of Children’s Services. After a coordinated investigation involving a DCS lawyer (Tracy Hetzel), Brentwood police (Detective Lori Russ and Captain David O’Neil), and prosecutors (Assistant District Attorney Mary Katherine Evins and District Attorney Kimberly Helper), Tennessee charged Hancock with felony custodial interference and charged Reguli as an accessory and facilitator.

Both women were convicted by juries under a reading of Tenn. Code Ann. § 39-13-306(a)(2) that did not require proof that the child was detained “after the expiration of the noncustodial ... parent ...’s lawful period of visitation.” The Tennessee Court of Criminal Appeals later vacated the convictions, holding that the “lawful period of visitation” language was a material element that the jury instructions improperly omitted. Afterward, Tennessee amended the statute to criminalize conduct like Hancock’s via a new subsection. Reguli and Hancock then sued city officials, the city, prosecutors, police, and a state official in federal court for malicious prosecution, conspiracy, and municipal liability.

The key federal issues on appeal were whether defendants could be liable for initiating/advancing prosecution when the criminal statute’s coverage was unsettled at the time—and whether various immunities and Monell doctrine foreclosed relief.

II. Summary of the Opinion

The Sixth Circuit affirmed dismissal of all challenged claims. It held:

• Police officers (Russ and O’Neil) were entitled to qualified immunity because plaintiffs failed to show a violation of clearly established law—especially where the alleged wrongdoing was “fabrication of a crime” (i.e., advancing a statutory interpretation later rejected), not fabrication of evidence.
• DCS attorney Hetzel also received qualified immunity because plaintiffs identified no clearly established law making her conduct unlawful; her actions fit within her discretionary functions.
• Prosecutors (Helper and Evins) received absolute immunity for drafting/structuring the indictment and pursuing prosecution—core “advocate for the State” functions—even if the indictment omitted language later deemed material.
• Conspiracy claims failed because the same immunities applied to the same underlying conduct.
• Monell claim against the City of Brentwood failed because the plaintiffs’ “ratification” theory required that Captain O’Neil have final policymaking authority, which he lacked under Tennessee law and the Brentwood municipal code.

III. Analysis

A. Precedents Cited

1. Pleading/Judgment-on-the-pleadings framework

• Moderwell v. Cuyahoga County and Jackson v. Pro. Radiology Inc.: establish that Rule 12(c) uses the Rule 12(b)(6) standard and permits judgment where defendants are “clearly entitled” even accepting well-pleaded facts.
• Mixon v. Ohio: courts need not accept legal conclusions or unwarranted inferences—important here because plaintiffs’ theory depended on characterizing a contested statutory reading as a constitutional tort.
• Moon v. Harrison Piping Supply: recognizes discretion to decline supplemental jurisdiction over state claims; the panel noted plaintiffs did not challenge the district court’s decision to reach the state claims on the merits.

2. Malicious prosecution elements and probable cause

• Sykes v. Anderson: supplies the Sixth Circuit’s federal malicious-prosecution elements, including participation in prosecution, lack of probable cause, deprivation of liberty, and favorable termination.
• Mynatt v. Nat'l Treasury Emps. Union, Chapter 39: provides Tennessee’s malicious-prosecution elements (instituted without probable cause, malice, favorable termination).
• Robertson v. Lucas: states the “general rule” that a grand jury indictment “fair upon its face” conclusively determines probable cause—background pressure against plaintiffs’ “no probable cause” theory.

3. Reasonable mistake of law as compatible with probable cause

• Barrera v. City of Mount Pleasant and Heien v. North Carolina: support that a reasonable mistake of law (like a reasonable mistake of fact) can be consistent with Fourth Amendment reasonableness.
• Sinclair v. Lauderdale County: applies that principle in the probable-cause context, sustaining probable cause despite a legal misinterpretation that was not “so unreasonable.”
• Devenpeck v. Alford: makes the officer’s subjective state of mind irrelevant to probable cause (except for facts known), undermining any attempt to convert alleged malice into a probable-cause defect.

4. Qualified immunity standards and “clearly established” law

• Hopkins v. Nichols: places the burden on plaintiffs to show defendants are not entitled to qualified immunity once raised.
• Guptill v. City of Chattanooga and Jackson v. City of Cleveland: articulate the two-part qualified-immunity test and confirm courts may decide prongs in either order.
• District of Columbia v. Wesby: defines “clearly established” with specificity—every reasonable official must understand the rule as applied to the particular facts.

5. What counts as actionable “malicious prosecution” conduct by officers

• Newman v. Township of Hamburg: frames officer liability as involving deliberate or reckless falsehoods leading to prosecution without probable cause.
• Mills v. Barnard: describes typical malicious-prosecution scenarios as involving fabricated evidence leading to wrongful arrest/indictment.
• Plaintiffs relied on cases about fabrication/omission in warranting and prosecuting, but the panel found them not analogous:
  • Spurlock v. Satterfield (fabricated evidence),
  • Gardenhire v. Schubert (arrest without probable cause),
  • Wesley v. Campbell (warrant affidavit lacking obviously exonerating testimony).

6. State qualified immunity parallels

• Hammond-Beville v. Landis and Youngblood v. Clepper: describe Tennessee qualified immunity as mirroring federal qualified immunity in relevant respects.
• Cawood v. Booth (citing Rogers v. Gooding): supports that Tennessee officers are immune absent violation of clearly established state tort law.

7. Qualified immunity for non-police state officials; “discretionary function”

• Ziglar v. Abbasi and Lucas v. State: invoked for the “discretionary function” aspect of qualified immunity.
• Pittman v. Cuyahoga Cnty. Dep't of Child. & Fam. Servs.: illustrates qualified immunity for children’s services employees even amid allegations of misleading conduct, reinforcing the breadth of protection for child-welfare-related discretionary acts.
• Hinchman v. Moore: cited by plaintiffs for the general proposition that falsifying facts to establish probable cause is unconstitutional; the panel distinguished it on the facts (no falsification of evidence by Hetzel).

8. Prosecutorial absolute immunity

• Buckley v. Fitzsimmons: provides the functional test—absolute immunity for “advocate” conduct (initiating/pursuing prosecution), but not for police-like investigative work.
• Price v. Montgomery County, Jackson v. City of Cleveland, and Smith v. Wayne County: recent Sixth Circuit authority applying the advocate/investigator distinction and reiterating broad immunity for prosecutorial initiation and pursuit of prosecutions.
• Malley v. Briggs: cited to reinforce that seeking an indictment is protected.
• Grant v. Hollenbach: absolute immunity applies even if a prosecutor allegedly acted in bad faith.
• Imbler v. Pachtman: policy rationale—absolute immunity may leave wronged defendants without civil redress, but is necessary for vigorous prosecutorial function.
• Willett v. Ford: Tennessee parallels federal prosecutorial immunity for state malicious-prosecution claims.

9. Monell, ratification, and “final policymaking authority”

• Monell v. Dep't of Soc. Servs.: municipal liability exists only when an official policy/custom causes a constitutional violation.
• Pembaur v. City of Cincinnati: single decisions can constitute policy only when made by a final policymaker.
• Burgess v. Fischer and Miller v. Calhoun County: ratification requires final policymaking authority under state law.
• Feliciano v. City of Cleveland: “mere discretion” is not final policymaking authority; decisions must be final, unreviewable, and unconstrained by superior policy.

B. Legal Reasoning

1. The court’s central move: resolve on immunity and “clearly established” grounds

Although plaintiffs pressed probable cause—arguing there could be no probable cause because the statute (as later interpreted) did not cover their conduct—the Sixth Circuit did not need to definitively decide whether defendants’ statutory reading was reasonable enough to support probable cause. Instead, it disposed of the claims on immunity doctrines:

• Russ and O’Neil: Even assuming plaintiffs could frame the officers’ conduct as an omission of a “material” fact (absence of a visitation order), plaintiffs failed to identify clearly established authority requiring officers to disclose the absence of “arguably material” information during an investigation—particularly where statutory coverage was unsettled at the time.
• Hetzel: Plaintiffs’ reliance on general “falsifying facts” principles did not fit because Hetzel did not fabricate evidence; she reported conduct that appeared to violate a court order and collaborated with police in a role consistent with statutory child-welfare duties. Plaintiffs also failed to show her conduct fell outside discretionary functions.
• Helper and Evins: Drafting an indictment is paradigmatic “advocate” conduct under Buckley v. Fitzsimmons and thus absolutely immune, even if the indictment’s phrasing later contributed to erroneous jury instructions and convictions.

2. The court’s caution about criminalizing statutory misinterpretation as a constitutional tort

This reflects a structural concern: if later appellate statutory interpretation could retroactively convert a prosecution into a civil-rights tort, officials would face expansive liability whenever statutes are ambiguous—precisely the kind of hindsight-driven exposure qualified immunity and prosecutorial immunity are designed to limit.

3. Conspiracy claims fall with the immunities

Plaintiffs’ conspiracy counts were not independently analyzed on separate conduct; they “lump[ed]” the same meetings, motives, and coordinated steps used to support malicious prosecution. Because immunity analysis is conduct-based, the court held defendants were immune for the same reasons:

• Qualified immunity for Russ/O’Neil/Hetzel due to lack of clearly established law governing the novel “fabricated crime” theory.
• Absolute immunity for prosecutors for advocate-phase coordination in preparing initiation of judicial proceedings; to the extent any conduct resembled police-like investigation, prosecutors would still have at least qualified immunity absent clearly established unlawfulness.

4. Monell “ratification” requires a true final policymaker

Plaintiffs’ municipal theory depended on Captain O’Neil “ratifying” the prosecution decision, turning it into city policy. The court rejected this because Tennessee law and Brentwood’s code required officers to follow the police chief’s orders, meaning O’Neil’s decisions were constrained and reviewable. Under Feliciano v. City of Cleveland, that is not final policymaking authority; thus ratification could not create municipal liability.

C. Impact

• Novel “fabricated crime” theories face steep qualified-immunity barriers: The decision signals that plaintiffs cannot rely on general fabrication-of-evidence cases to overcome qualified immunity when the allegation is that officials advanced a legal theory later rejected. Absent closely analogous precedent, courts may find the law not clearly established.
• Prosecutorial immunity remains robust even when indictments omit material elements: By treating indictment drafting as core advocate conduct, the opinion reinforces that post hoc statutory or instructional errors typically do not create civil exposure for prosecutors.
• Municipal liability via ratification is narrow: The opinion emphasizes the “final policymaker” requirement and rejects attempts to elevate mid-level supervisory discretion (a police captain) into city policy authority without clear state-law grounding.
• Practical effect on civil-rights litigation strategy: Plaintiffs challenging prosecutions premised on ambiguous statutes may need to focus on non-immune actors and clearly established disclosure/fabrication rules tied to evidence (not law), or identify prior precedent squarely recognizing a duty to disclose the omitted fact in the specific context.

IV. Complex Concepts Simplified

• Qualified immunity: A defense that protects officials unless they violated a right that was “clearly established” at the time. It is not enough that a court later says the official was wrong; the unlawfulness must have been clearly settled then.
• Absolute immunity (prosecutors): Stronger protection for prosecutors acting as courtroom advocates—initiating cases, drafting indictments, presenting evidence—regardless of alleged malice or bad faith. It generally does not cover police-like investigative work, but the line is drawn by function.
• Probable cause: A reasonable basis to believe a crime was committed. It can exist even if the defendant is ultimately acquitted or the conviction is reversed. The opinion also highlights that reasonable mistakes of law can be compatible with Fourth Amendment reasonableness.
• Grand jury indictment and probable cause: Sixth Circuit precedent recognizes a “general rule” that a facially valid indictment conclusively establishes probable cause, though exceptions exist (not developed here because the case was resolved on immunity).
• Monell liability: Cities are not liable under § 1983 just because they employ a wrongdoer. The plaintiff must show a city policy or custom caused the violation. “Ratification” works only if an official with final policymaking authority made or adopted the challenged decision.
• Final policymaker: Not simply someone with discretion. It is someone whose decision is final, unreviewable, and not constrained by superior policies—determined by state law and municipal structure.

V. Conclusion

Reguli v. Hetzel affirms that civil-rights claims premised on a prosecution under an ambiguous statute are unlikely to proceed absent clearly established authority translating that theory into a constitutional violation. The Sixth Circuit relied on the functional breadth of prosecutorial absolute immunity, the stringent specificity demanded by “clearly established” qualified-immunity doctrine, and the narrowness of Monell ratification (limited to true final policymakers). The decision’s broader significance is institutional: it resists hindsight-driven liability for statutory-interpretation errors and confines municipal exposure to decisions traceable to legally recognized policymakers.