ERISA Preempts State PBM “Any-Willing-Provider” and Anti-Steering Incentive Restrictions that Dictate Pharmacy Network Design and Cost-Sharing

Case: McKee Foods Corp. v. BFP Inc. (6th Cir. Apr. 7, 2026)  |  Court: United States Court of Appeals for the Sixth Circuit  |  Panel: McKeague, Readler, and Davis, JJ.

1. Introduction

This Sixth Circuit decision sits at the intersection of (i) growing state efforts to regulate pharmacy benefit managers (PBMs) and (ii) the Employee Retirement Income Security Act of 1974 (ERISA)’s broad preemption of state laws that intrude into the structure or administration of employer-sponsored benefit plans. The plaintiff, McKee Foods Corporation, sponsors and administers a self-funded ERISA health plan and uses a PBM (MedImpact) to help administer prescription-drug benefits and pharmacy networks.

Tennessee enacted PBM-focused laws—first Public Chapter 569 (2021), then Public Chapter 1070 (effective Jan. 1, 2023)—aimed at reducing “steering” to PBM-affiliated pharmacies and protecting smaller/rural pharmacies. The statutes did so chiefly by: (a) imposing “any-willing-provider” (AWP) style access rules for pharmacy networks, and (b) restricting differential cost-sharing and incentives tied to pharmacy choice.

The core issue was whether ERISA preempts these Tennessee PBM laws when applied to self-funded ERISA plans and their PBMs—particularly in light of the Supreme Court’s decision in Rutledge v. PCMA, 592 U.S. 80 (2020), which upheld an Arkansas PBM reimbursement-rate law against an ERISA preemption challenge.

2. Summary of the Opinion

The Sixth Circuit affirmed a permanent injunction prohibiting Tennessee’s Insurance Commissioner from enforcing the challenged PBM provisions against McKee’s self-funded ERISA plan (directly) or against its PBM (indirectly, for actions taken on the plan’s behalf). The court held that Tennessee’s PBM laws have an impermissible “connection with” ERISA plans because they:

  • require plans to be structured in particular ways (especially regarding pharmacy network composition and cost-sharing),
  • govern central matters of plan administration (pharmacy network design and benefit incentives), and
  • interfere with nationally uniform plan administration by forcing state-specific plan tailoring.

The court also resolved threshold justiciability and enforcement-path questions in McKee’s favor, holding that McKee (as a plan fiduciary) could proceed and had standing to bring a pre-enforcement challenge, and that Ex parte Young allowed prospective injunctive relief against the Commissioner.

3. Analysis

3.1. Precedents Cited (and How They Shaped the Decision)

Organizing principle: The panel treats Rutledge v. PCMA as the key modern baseline: states may regulate PBM reimbursement and similar cost measures, but they cross the ERISA line when they dictate benefit design, network structure, or core administrative choices for self-funded plans.

  • Rutledge v. PCMA, 592 U.S. 80 (2020)
    Role: The Commissioner invoked Rutledge as permission for broader PBM regulation. The Sixth Circuit instead used Rutledge’s framework to distinguish permissible “cost regulation” from impermissible dictation of plan structure. Rutledge’s “connection with” tests—state laws that (i) mandate plan structures, (ii) bind administrators to benefit choices, (iii) govern central plan administration, or (iv) disrupt national uniformity—anchored the preemption analysis. The panel held Tennessee’s laws were unlike Rutledge’s reimbursement tethering because they compelled network inclusion and flattened cost-sharing differentials across pharmacies.
  • Gobeille v. Liberty Mut. Ins. Co., 577 U.S. 312 (2016)
    Role: Provided the “central matter of plan administration” and “nationally uniform plan administration” concepts. The panel leaned on Gobeille to emphasize ERISA’s goal of avoiding a 50-state compliance patchwork for plan administrators.
  • Shaw v. Delta Air Lines, Inc., 463 U.S. 85 (1983)
    Role: Supported the proposition that ERISA preemption reaches state laws that prohibit employers from structuring plans in certain ways—here, Tennessee’s laws effectively removing the plan’s discretion to design a limited or tiered pharmacy network.
  • N.Y. State Conf. of Blue Cross & Blue Shield Plans v. Travelers Ins. Co., 514 U.S. 645 (1995)
    Role: Used both for the “bind plan administrators to a particular choice” phrasing and for the caution that not every cost impact triggers preemption; only sufficiently “acute” impacts that effectively dictate plan choices do. The panel used Travelers to differentiate ordinary economic effects from network-design mandates.
  • Cal. Div. of Lab. Standards Enf't v. Dillingham Constr., N.A., Inc., 519 U.S. 316 (1997)
    Role: Supplied the “nature of the effect” lens for “connection with” analysis. Tennessee’s statutes were judged by their functional effect on plan administration and benefit design.
  • Egelhoff v. Egelhoff ex rel. Breiner, 532 U.S. 141 (2001)
    Role: Reinforced the patchwork concern: state-by-state variations force administrators to track, update, and litigate diverse state rules—exactly what ERISA seeks to prevent. The panel used Egelhoff to underscore why Tennessee-specific network rules are preempted even if framed as PBM regulation.
  • Kentucky Ass'n of Health Plans, Inc. v. Nichols, 227 F.3d 352 (6th Cir. 2000), aff'd sub nom. Kentucky Ass'n of Health Plans, Inc. v. Miller, 538 U.S. 329 (2003)
    Role: A critical intra-circuit comparator for AWP laws. Nichols held Kentucky AWP statutes “connected with” ERISA plans because they effectively required purchase of a “certain structure” of benefits by forcing provider inclusion. The panel treated Tennessee’s AWP provisions as materially similar: they remove the plan’s option to design a narrower network by requiring access for any pharmacy willing to accept set terms.
  • PCMA v. Mulready, 78 F.4th 1183 (10th Cir. 2023)
    Role: Served as persuasive authority aligning with Nichols and the panel’s reading of Rutledge. Mulready treated pharmacy network composition and differential cost-sharing as “key benefit designs” and held comparable Oklahoma PBM provisions preempted where they required inclusion in preferred networks and prohibited differential cost-sharing. The Sixth Circuit used Mulready to reinforce that “anti-steering” and AWP rules can dictate plan design, not merely prices.
  • PCMA v. Dist. of Columbia, 613 F.3d 179 (D.C. Cir. 2010)
    Role: Supported the proposition that rules disabling cost-sharing arrangements can operate as regulation of ERISA plans themselves. The Sixth Circuit used this to frame Tennessee’s incentive provisions as more than ordinary market regulation.
  • Pilot Life Ins. Co. v. Dedeaux, 481 U.S. 41 (1987) and FMC Corp. v. Holliday, 498 U.S. 52 (1990)
    Role: Controlled the saving clause/deemer clause structure. Even assuming Tennessee’s PBM laws “regulate insurance,” the deemer clause prevents applying such laws to self-funded ERISA plans by “deeming” them insurers.
  • US Airways, Inc. v. McCutchen, 569 U.S. 88 (2013), Mertens v. Hewitt Assocs., 508 U.S. 248 (1993), and CIGNA Corp. v. Amara, 563 U.S. 421 (2011)
    Role: Used to confirm that injunctions are “typically available in equity,” supporting the availability of equitable relief under ERISA § 1132(a)(3).
  • Armstrong v. Exceptional Child Ctr., Inc., 575 U.S. 320 (2015) and Ex parte Young, 209 U.S. 123 (1908)
    Role: Provided the doctrinal pathway for suing state officials for prospective equitable relief to stop enforcement of allegedly preempted state laws (and the general “long history” of such review).
  • Susan B. Anthony List v. Driehaus, 573 U.S. 149 (2014) and McKay v. Federspiel, 823 F.3d 862 (6th Cir. 2016)
    Role: Framed the pre-enforcement standing test and the “credible threat of prosecution” factors. The court found credible threat based on complaint-driven enforcement mechanisms and the Commissioner’s repeated insistence that ERISA plans were covered.
  • Plan fiduciary status authorities: Gobeille v. Liberty Mut. Ins. Co., 577 U.S. 312 (2016); Briscoe v. Fine, 444 F.3d 478 (6th Cir. 2006); Tiara Yachts, Inc. v. Blue Cross Blue Shield of Mich., 138 F.4th 457 (6th Cir. 2025); Hunter v. Caliber Sys., Inc., 220 F.3d 702 (6th Cir. 2000); and the monitoring duty discussion referencing Hughes v. Nw. Univ., 595 U.S. 170 (2022) and Tibble v. Edison Int'l, 575 U.S. 523 (2015).
    Role: These cases supported the functional determination that McKee, which designed and administered key plan features and made discretionary network decisions (including exclusion of a pharmacy after an audit), qualified as an ERISA fiduciary eligible to sue under ERISA’s civil enforcement provision.

3.3. Impact

1) Narrowing the post-Rutledge regulatory “green light”

The opinion is best read as a corrective to expansive interpretations of Rutledge v. PCMA. Rutledge is not a blanket approval of PBM statutes touching ERISA plans; it tolerates certain price/cost regulations that do not dictate plan design. Tennessee crossed the line by regulating (a) who must be in pharmacy networks and (b) how plans may structure participant cost-sharing and incentives.

2) Pharmacy networks and tiering are treated as “central” ERISA plan administration

By repeatedly framing network composition and differential cost-sharing as “central” and “key benefit design,” the Sixth Circuit signals that state laws reshaping preferred networks, limited networks, and steering incentives are particularly vulnerable to ERISA preemption when applied to self-funded plans.

3) Enforcement mechanics matter for standing—and thus for pre-enforcement challenges

The court’s standing analysis underscores that complaint-driven administrative schemes (where “any member of the public” can initiate proceedings) can generate a “credible threat” sufficient for pre-enforcement review, even absent warning letters or finalized sanctions. That lowers procedural barriers for ERISA fiduciaries seeking early federal adjudication of preemption.

4) Drafting choices that expressly include ERISA plans can backfire

Tennessee’s explicit expansion of statutory definitions to include ERISA plans—and the “notwithstanding” clause applying the PBM part to ERISA plans—made the ERISA collision unmistakable and strengthened the case for preemption, including via the deemer clause.

5) Practical consequences for states

States remain able to regulate PBMs in ways closer to Rutledge (e.g., reimbursement-rate methodology and pharmacy appeals processes), but must tread carefully when regulation effectively mandates: (i) open pharmacy networks, (ii) preferred-network access for any willing pharmacy, or (iii) uniform participant cost-sharing across pharmacies—at least as applied to self-funded ERISA plans.

4. Complex Concepts Simplified

  • ERISA preemption (“relate to”): ERISA overrides state laws that “relate to” employee benefit plans. A law “relates to” a plan if it has a forbidden reference to or connection with the plan. This case focuses on “connection with,” i.e., whether the law’s practical effect intrudes into plan design/administration.
  • “Connection with” tests (from Rutledge/Gobeille): A state law is likely preempted if it (a) mandates plan structure, (b) binds administrators to particular benefit choices, (c) governs central plan administration, or (d) disrupts nationally uniform plan administration.
  • Self-funded ERISA plan: The employer pays benefits from its own funds rather than buying an insurance policy to cover claims. Self-funded status is crucial because the deemer clause prevents states from treating the plan as an insurer.
  • Any-Willing-Provider (AWP): A rule requiring a network to accept any provider (here, any licensed pharmacy) willing to accept the network’s terms. Courts often view AWP mandates as altering network design and thus plan structure.
  • Cost-sharing / steering incentives: Copays, coinsurance, and differential pricing that encourage beneficiaries to use certain pharmacies (e.g., preferred, mail-order, specialty, or plan-owned pharmacies). Tennessee’s “incentive provisions” effectively forbid these differential tools within the network.
  • Saving clause vs. deemer clause: The saving clause can preserve state insurance regulation from ERISA preemption, but the deemer clause prevents a state from treating a self-funded ERISA plan as an insurance company. In practice, many insurance-style state rules still cannot be applied to self-funded plans.
  • Ex parte Young: A doctrine allowing suits against state officials (not the state itself) for prospective injunctions to stop ongoing violations of federal law—here, enforcement of state statutes alleged to be preempted by ERISA.

5. Conclusion

McKee Foods Corp. v. BFP Inc. establishes a clear Sixth Circuit boundary for PBM-related state regulation applied to self-funded ERISA plans: statutes that functionally mandate pharmacy network inclusion (AWP rules) or eliminate differential cost-sharing and steering incentives intrude on core ERISA plan design and administration and are therefore preempted under ERISA’s “connection with” doctrine as articulated in Rutledge v. PCMA and Gobeille v. Liberty Mut. Ins. Co..

The opinion’s broader significance is twofold. Substantively, it treats pharmacy network architecture and participant-facing cost-sharing as central ERISA concerns, not mere economic side effects. Procedurally, it confirms that ERISA fiduciaries can bring pre-enforcement challenges for equitable relief against state officials under an Ex parte Young framework, particularly where administrative complaint mechanisms and affirmative enforcement positions create a credible threat of enforcement.