Boe v. Children’s Hosp. Colo.: In CADA Preliminary-Injunction Cases, Public Interest and Equities Cannot Be Defeated by Headcounts or Speculative Federal Retaliation

Citation: Boe v. Children's Hosp. Colo., 2026 CO 32, 26SA66 (Colo. May 18, 2026) (en banc).
Posture: Original proceeding under C.A.R. 21; order to show cause made absolute; preliminary injunction ordered.

I. Introduction

Boe v. Children's Hosp. Colo. arises from Children’s Hospital Colorado (“CHC”) suspending medical gender-affirming care (including puberty blockers and hormone therapy) for patients under eighteen after a federal agency declaration threatened potential exclusion from federal health care payment programs. Minor plaintiffs (Bella Boe, Chloe Coe, Danielle Doe, and Gabriella Goe), representing a putative class of similarly situated patients, sued CHC under the Colorado Anti-Discrimination Act (“CADA”), alleging that CHC—while continuing to provide the same medications to cisgender youth for other indications—denied transgender youth full and equal services “because of” protected status (principally gender identity).

The central issue before the Colorado Supreme Court was not the ultimate merits of the CADA claim, but whether the district court misapplied the preliminary-injunction test from Rathke v. MacFarlane, 648 P.2d 648 (Colo. 1982), particularly the “public interest,” “balance of the equities,” and “status quo” factors, in an anti-discrimination setting where the defendant asserted existential risk from federal retaliation.

II. Summary of the Opinion

The Court (Hood, J.) held that the district court abused its discretion in denying a preliminary injunction. Although the district court found plaintiffs satisfied likelihood of success, irreparable harm, and no adequate legal remedy, it denied relief based on (i) public interest, (ii) balance of equities, and (iii) insufficient specificity/status quo concerns. The Supreme Court reversed those determinations, concluding:

  • Public interest: In protected-class discrimination cases, courts may not employ a strict numerical comparison of affected individuals (a “greater number” rationale) that structurally disadvantages minority groups; and the asserted “federal law” obstacle was mischaracterized because the “Kennedy Declaration” was not itself federal law and, in any event, had been enjoined in Oregon v. Kennedy, No. 6:25-cv-02409-MTK (D. Or. Apr. 18, 2026).
  • Balance of equities: Plaintiffs’ ongoing physical and psychological harms were actual and immediate, while CHC’s feared exclusion from federal programs was contingent and procedurally buffered by notice, administrative process, and potential judicial review; speculative harm could not outweigh demonstrated irreparable injury on these facts.
  • Status quo/specificity: The status quo was CHC’s pre-suspension policy (pre-January 2026) of offering medically necessary medical gender-affirming care. The injunction request was sufficiently precise; “medically necessary” is a term of art and not impermissibly vague in context.
  • Likelihood of success: Deferring to the district court’s supported findings, plaintiffs showed a reasonable probability of succeeding under CADA, particularly on gender identity discrimination, where CHC denied puberty blockers/hormones for gender-affirming purposes to transgender youth while continuing to provide them to cisgender youth for other reasons.

The Court ordered the district court to issue a preliminary injunction requiring CHC to restore medically necessary medical gender-affirming care pending resolution on the merits. Justices Boatright and Samour dissented, arguing plaintiffs were unlikely to succeed because CHC acted due to federal coercion, not “because of” protected status, and because the majority improperly defined the relevant “service.”

III. Analysis

A. Precedents Cited

1. Rathke v. MacFarlane, 648 P.2d 648 (Colo. 1982)

Rathke supplies the controlling six-factor preliminary-injunction framework. The Court emphasized that misapplication of these factors constitutes an abuse of discretion and used Rathke not merely as a checklist but as a structured method requiring legally correct evaluation of each factor. The key move in Boe is doctrinal: it calibrates how the “public interest” and “equities” factors must be analyzed when the underlying claim is statutory anti-discrimination involving a protected class.

2. Trinidad Area Health Ass'n v. Trinidad Ambulance Dist., 2024 COA 113, 562 P.3d 928

The district court relied on Trinidad to deny an injunction by reasoning that granting relief could “create a greater risk to a greater number of individuals.” The Supreme Court distinguished Trinidad as a non-protected-class context and rejected importing its headcount-driven logic into CADA discrimination cases. New operational rule: numerical majoritarian balancing is an inapt proxy for “public interest” where the movant alleges discrimination against a protected minority.

3. United States v. Carolene Prods. Co., 304 U.S. 144 (1938)

Invoked (via footnote 4) as an equality principle: prejudice against “discrete and insular minorities” can justify heightened judicial solicitude. In Boe, it supports the proposition that protected-class protections would be hollow if courts could deny equitable relief simply because fewer people are directly affected.

4. Regular Route Common Carrier Conf. of Colo. Motor Carriers Ass'n v. Pub. Utils. Comm'n, 761 P.2d 737 (Colo. 1988) and Burroughs Wellcome Co. v. Schweiker, 649 F.2d 221 (4th Cir. 1981)

These authorities were used to draw a line between policy statements and binding law. They undergird the Court’s holding that the “Kennedy Declaration” was not “federal law” and therefore could not be treated as a direct legal prohibition justifying denial of an anti-discrimination injunction.

5. Colo. Mining Ass'n v. Bd. of Cnty. Comm'rs, 199 P.3d 718 (Colo. 2009) and Kourlis v. Dist. Ct., 930 P.2d 1329 (Colo. 1997)

These cases support consulting legislative pronouncements to identify public policy and presuming elected branches act in the public interest. The Court leveraged them to give substantial weight to the General Assembly’s express policy choices in CADA and related statutes protecting gender identity and access to gender-affirming care.

6. Elder v. Williams, 2020 CO 88, 477 P.3d 694

Cited to characterize CADA claims as implementing broad anti-discrimination policy rather than merely compensating individual injury. This framing strengthened the Court’s public-interest analysis: enforcing CADA is itself a public interest, not merely a private dispute.

7. RoDa Drilling Co. v. Siegal, 552 F.3d 1203 (10th Cir. 2009) and Am. Invs. Life Ins. Co. v. Green Shield Plan, Inc., 358 P.2d 473 (Colo. 1960)

These cases informed the equities inquiry: speculative harm to a defendant generally does not outweigh proven, concrete harm to a plaintiff. The Court applied this principle to treat CHC’s asserted catastrophic consequences as contingent on multiple future steps and therefore insufficient to defeat injunctive relief.

8. Administrative review/exhaustion cases: Santos-Zacaria v. Garland, 598 U.S. 411 (2023); Smith v. Berryhill, 587 U.S. 471 (2019); Koerpel v. Heckler, 797 F.2d 858 (10th Cir. 1986); Mathews v. Eldridge, 424 U.S. 319 (1976)

Though not CADA cases, these authorities were central to the Court’s “speculation” assessment: they demonstrate pathways for CHC to obtain prompt judicial review (and emergency relief) if federal exclusion proceedings materialize, thereby reducing the immediacy—and increasing the contingency—of CHC’s feared harm.

9. Status quo/specificity cases: Anderson v. Pursell, 244 P.3d 1188 (Colo. 2010); Dominion Video Satellite, Inc. v. EchoStar Satellite Corp., 269 F.3d 1149 (10th Cir. 2001); Sanger v. Dennis, 148 P.3d 404 (Colo.App. 2006); Colo. Springs Bd. of Realtors, Inc. v. State, 780 P.2d 494 (Colo. 1989); People ex rel. Rein v. Meagher, 2020 CO 56, 465 P.3d 554

These cases guided the Court to define the status quo as the last uncontested relationship between the parties (here, CHC’s pre-suspension service offering), and to hold that injunction terms must be sufficiently precise. The Court concluded “medically necessary” was precise enough in context and consistent with accepted usage in litigation and medicine.

10. Causation and CADA parallels: Craig v. Masterpiece Cakeshop, Inc., 2015 COA 115, 370 P.3d 272, rev'd on other grounds sub nom., Masterpiece Cakeshop, Ltd. v. Colo. C.R. Comm'n, 584 U.S. 617 (2018); and Bostock v. Clayton Cnty., 590 U.S. 644 (2020)

These cases supplied the Court’s causation model: plaintiffs must show that “but for” protected status they would not have been denied full enjoyment, and that protected status need only be a cause “in whole or in part,” not the sole cause; animus is not required. The Court used Bostock to rebut CHC’s argument that another factor (federal pressure) “breaks” causation: multiple causal factors do not immunize discrimination when protected status is a but-for cause.

11. Dissent’s comparative authority: United States v. Skrmetti, 605 U.S. 495 (2025)

The dissent relied on Skrmetti for a definitional move: a “medical service” should be defined by the condition treated rather than by the medication used. While the majority did not adopt that framing, the dissent highlights a likely fault line for future litigation: whether CADA’s “services” analysis should be anchored in diagnosis/indication or in access to comparable medical interventions.

B. Legal Reasoning

1. Public interest: anti-discrimination policy and the rejection of majoritarian headcounts

The Court treated CADA and related statutes as authoritative public policy declarations: Colorado has chosen to prohibit discrimination on the basis of gender identity and to protect access to gender-affirming care “without unnecessary governmental interference.” From this, the Court drew two decisive conclusions:

  • Doctrinal constraint on “public interest” balancing: When plaintiffs seek to enjoin discrimination against a protected class, courts may not deny relief by reasoning that compliance could risk harms affecting a numerically larger population. The Court’s premise is structural: protected-class guarantees would be routinely defeated if “more affected people” automatically prevailed.
  • Speculation is not “public interest”: The district court treated the “Kennedy Declaration” as “federal law” and assumed imminent enforcement. The Supreme Court corrected both points: the declaration lacked the force of law; and the claimed enforcement harm became even less concrete after Oregon v. Kennedy enjoined enforcement based on the declaration.

2. Balance of the equities: actual harm vs contingent institutional risk

The Court accepted as established that plaintiffs faced immediate, ongoing harms—physical (irreversible pubertal changes) and psychological (including suicidal ideation). It then evaluated CHC’s competing harm claim through a procedural-likelihood lens: exclusion from federal programs would require notice and process, and CHC could pursue administrative and judicial remedies, potentially including immediate federal court intervention and interim relief.

The result is a practical injunction principle: when a defendant’s asserted catastrophe depends on multiple future discretionary steps by third parties, and when the defendant has potential legal avenues to prevent or pause that catastrophe, the harm may be treated as too speculative—at least at the preliminary stage—to outweigh proven irreparable injury.

3. Status quo and specificity: restoring a withdrawn service offering

The Court defined the status quo as CHC’s last uncontested practice: providing medically necessary medical gender-affirming care to minors prior to the January 2026 suspension. It framed the injunction as restorative rather than transformative: plaintiffs sought return to the prior scope of services, leaving clinical judgment with providers.

On specificity, the Court held that “medically necessary” is an established term of art and sufficiently determinate here because the trial court found the TRUE Center already used medical necessity criteria to decide when to prescribe such care. Thus, the injunction did not require CHC to guess at compliance.

4. Likelihood of success under CADA: differential access and “because of” causation

The Court affirmed (for preliminary purposes) the district court’s conclusion that plaintiffs had a reasonable probability of success under section 24-34-601(2)(a). Two strands of reasoning did the work:

  • Comparative access: CHC stopped providing puberty blockers and hormone therapy to transgender minors while continuing to provide those medications to cisgender minors for other indications. The Court treated this as evidence of differentiation “based on gender identity,” because the denial was tied to gender-affirming purpose and, by extension, gender identity.
  • Intrinsic linkage: The Court reasoned that actions “related to gender-affirming care” inherently “implicate gender identity,” analogizing to Craig’s treatment of conduct/status linkage. CHC’s lack of animus did not negate “because of” causation under CADA as interpreted through Craig and reinforced by Bostock.

5. The dissent’s competing causal theory

The dissent argued plaintiffs were unlikely to succeed because CHC acted “only after” federal threats and thus not “because of” protected status. It further contended that “service” must be defined by the underlying condition (e.g., precocious puberty versus gender dysphoria) rather than the shared medication, warning the majority’s approach risks converting any service-line decision into discrimination if it disproportionately impacts a protected group.

The majority’s implicit response is that CADA’s “because of” inquiry is satisfied where protected status is a but-for cause of the denial of equal enjoyment, even if other motivating forces exist, and that anti-discrimination norms can require entities to bear certain external pressures rather than pass them through to protected minorities.

C. Impact

1. A recalibrated “public interest” factor in protected-class injunctions

Boe is likely to be cited for the proposition that “public interest” cannot be reduced to a utilitarian tally when statutory protected-class rights are at stake. This materially strengthens preliminary-injunction prospects in civil rights cases where defendants argue that compliance risks collateral harm to others.

2. Speculative third-party retaliation is less effective as a defense to interim relief

The Court’s emphasis on contingency, procedural safeguards, and available review mechanisms signals that defendants will need more than threatened enforcement to defeat injunctions—particularly when the threatened harm depends on discretionary actions by other sovereigns and is not immediately unavoidable.

3. “Medically necessary” injunction language is validated (in context)

By holding “medically necessary” sufficiently specific here, the Court provides drafting guidance: injunctions can incorporate medical-necessity standards where the record shows established clinical criteria and prior practice.

4. CADA causation in public-accommodation healthcare disputes

The decision reinforces that, at least at the preliminary stage, CADA “because of” causation can be shown without animus and without sole-cause proof, and that defendants cannot necessarily escape CADA exposure by citing external pressures that “influenced” their decisions.

IV. Complex Concepts Simplified

  • Preliminary injunction: A temporary court order issued early in a case to prevent harm before a final trial. It does not finally decide who wins.
  • Rathke factors: Six requirements Colorado courts use to decide whether to grant a preliminary injunction, including likelihood of success, irreparable harm, public interest, equities, and preserving the status quo.
  • Public interest vs. balance of equities: “Public interest” looks at broader societal consequences; “equities” compares the harms to the parties themselves.
  • Status quo: The last stable, uncontested arrangement between the parties before the dispute erupted. Injunctions typically aim to hold that line.
  • “Because of” / but-for causation in discrimination law: A decision is “because of” a protected trait if changing that trait (holding everything else constant) would change the outcome—even if other factors also contributed.
  • “Speculative” harm: Harm that might occur depending on future uncertain events. Courts often give it less weight than harm that is already happening or is imminent and concrete.

V. Conclusion

Boe v. Children's Hosp. Colo. establishes an important Colorado injunction principle for civil rights litigation: when plaintiffs seek to halt discrimination against a protected class under CADA, courts may not deny preliminary relief by (1) relying on majoritarian headcounts to define the public interest, or (2) treating contingent third-party retaliation as outweighing proven irreparable harm. The Court also clarifies that restoring a provider’s pre-dispute service offering can preserve the status quo and that “medically necessary” can be sufficiently specific when grounded in existing clinical practice.

Going forward, Boe will likely shape how Colorado trial courts handle emergency requests in anti-discrimination cases where defendants argue that compliance risks broader institutional consequences: the analysis must be legally anchored in statutory policy choices, attentive to minority-rights structure, and disciplined about the difference between real and speculative harms.