Caremark, LLC v. Chickasaw Nation ( 2022 )


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  •                FOR PUBLICATION
    UNITED STATES COURT OF APPEALS
    FOR THE NINTH CIRCUIT
    CAREMARK, LLC; CAREMARK PHC,            No. 21-16209
    LLC; CAREMARKPCS HEALTH LLC;
    CAREMARK RX, LLC; AETNA, INC.;            D.C. No.
    AETNA HEALTH, INC.,                    2:21-cv-00574-
    Petitioners-Appellees,          SPL
    v.
    OPINION
    CHICKASAW NATION; CHICKASAW
    NATION DEPARTMENT OF HEALTH;
    ARDMORE HEALTH CLINIC;
    CHICKASAW NATION MEDICAL
    CENTER; PURCELL HEALTH CLINIC;
    TISHOMINGO HEALTH CLINIC;
    CHICKASAW NATION ONLINE
    PHARMACY REFILL CENTER,
    Respondents-Appellants.
    Appeal from the United States District Court
    for the District of Arizona
    Steven Paul Logan, District Judge, Presiding
    Argued and Submitted January 11, 2022
    Pasadena, California
    2              CAREMARK V. CHICKASAW NATION
    Before: J. Clifford Wallace, Danny J. Boggs, * and
    Michelle T. Friedland, Circuit Judges.
    Filed August 9, 2022
    Opinion by Judge Friedland
    SUMMARY **
    Arbitration
    The panel affirmed the district court’s order granting the
    petition of Caremark, LLC, and Caremark affiliates to
    compel arbitration of a dispute with the Chickasaw Nation
    and five pharmacies that the Nation owns and operates.
    The Chickasaw Nation, a sovereign and federally
    recognized Indian tribe, operates its own healthcare system,
    which includes the five pharmacies. Under federal law,
    members of federally recognized Native nations are eligible
    to receive healthcare services at the nations’ facilities at no
    charge, and a nation may recoup the cost of services that it
    provides to a tribal member from that member’s health-
    insurance plan. Caremark is the pharmacy benefit manager
    for health-insurance plans that cover many tribal members
    served by the Chickasaw Nation’s pharmacies. The Nation
    signed agreements with Caremark, enrolling its pharmacies
    *
    The Honorable Danny J. Boggs, United States Circuit Judge for
    the U.S. Court of Appeals for the Sixth Circuit, sitting by designation.
    **
    This summary constitutes no part of the opinion of the court. It
    has been prepared by court staff for the convenience of the reader.
    CAREMARK V. CHICKASAW NATION                     3
    in Caremark’s networks to facilitate reimbursement for the
    costs of providing pharmacy services to tribal members.
    Each of these agreements incorporated by reference a
    Provider Agreement and a Provider Manual. The Provider
    Manual included an arbitration provision with a delegation
    clause requiring the arbitrator, rather than the courts, to
    resolve threshold issues about the scope and enforceability
    of the arbitration provision.
    The Nation sued Caremark in the United States District
    Court for the Eastern District of Oklahoma, claiming
    violations of 25 U.S.C. § 1621e, a provision of the Indian
    Health Care Improvement Act referred to as the “Recovery
    Act.” The Nation alleged that Caremark improperly denied
    claims for reimbursement for covered medications that its
    pharmacies provided to tribal members enrolled in
    Caremark-managed health-insurance plans. Caremark filed
    a petition to compel arbitration of the Nation’s Recovery Act
    claims. It filed that petition in the United States District
    Court for the District of Arizona, the forum that the Provider
    Manual designated for arbitration. The district court granted
    the petition.
    The Nation argued that its Recovery Act claims were not
    arbitrable for two reasons. First, it argued that it was not
    bound by the arbitration provision in Caremark’s Provider
    Manual because it never clearly and unequivocally waived
    its tribal sovereign immunity. Second, it argued that the
    Recovery Act itself precluded the enforcement of any
    agreement to arbitrate. Rather than addressing these
    arguments, the district court sent the threshold arbitrability
    question to the arbitrator in light of the delegation clause in
    the Provider Manual.
    4            CAREMARK V. CHICKASAW NATION
    The panel applied the following principles from
    Supreme Court case law. First, a court must resolve any
    challenge that an agreement to arbitrate was never formed,
    even in the presence of a delegation clause. Next, a court
    must also resolve any challenge directed specifically to the
    enforceability of the delegation clause before compelling
    arbitration of any remaining gateway issues of arbitrability.
    Finally, if the parties did form an agreement to arbitrate
    containing an enforceable delegation clause, all arguments
    going to the scope or enforceability of the arbitration
    provision are for the arbitrator to decide in the first instance.
    The panel rejected the Nation’s argument that it did not
    actually form contracts with Caremark that included
    arbitration provisions with delegation clauses. The Nation
    argued that agreeing to arbitration would have waived its
    tribal immunity, and because the Nation did not take the
    clear and unequivocal steps necessary to waive immunity, it
    could not have agreed to the arbitration provisions. The
    panel concluded that the premise of the Nation’s argument—
    that an arbitration agreement always and necessarily waives
    tribal sovereign immunity—was incorrect. Rather, the
    arbitration agreement simply designated a forum for
    resolving disputes for which immunity was waived.
    In the alternative, the Nation contended that arbitration
    of its claims against Caremark was precluded by the
    Recovery Act, which states that “no provision of any
    contract . . . shall prevent or hinder the right of recovery of
    . . . an Indian tribe[] or organization.” The panel concluded
    that this contention challenged the enforceability of the
    arbitration provisions as a whole, rather than impugning the
    validity of the delegation clause specifically, and therefore
    was for the arbitrator to decide.
    CAREMARK V. CHICKASAW NATION                5
    COUNSEL
    Jonathan Massey (argued) and Matthew M. Collette, Massey
    & Gail LLP, Washington, D.C.; Michael Burrage, Patricia
    A. Sawyer, and Reggie N. Whitten, Whitten Burrage,
    Oklahoma City, Oklahoma; Michael B. Angelovich,
    Chad E. Ihrig, Bradley W. Beskin, and Nicholas W.
    Shodrok, Nix Patterson LLP, Austin, Texas; for
    Respondents-Appellants.
    Sarah M. Harris (argued), Kimberly Broecker, and Helen E.
    White, Williams & Connolly LLP, Washington, D.C.; Jon T.
    Neumann, Greenberg Traurig LLP, Phoenix, Arizona; Peter
    J. Kocoras, Thompson Hine LLP, Chicago, Illinois; Brian
    Steinwascher, Thompson Hine LLP, New York, New York;
    for Petitioners-Appellees.
    John M. Masslon II and Cory L. Andrews, Washington
    Legal Foundation, Washington, D.C., for Amicus Curiae
    Washington Legal Foundation.
    Mark Emery, Jonathan S. Franklin, and Peter B. Siegal,
    Norton Rose Fulbright US LLP, Washington, D.C.; Tara S.
    Morrissey and Jennifer B. Dickey, U.S. Chamber Litigation
    Center, Washington, D.C.; for Amicus Curiae Chamber of
    Commerce of the United States of America.
    6            CAREMARK V. CHICKASAW NATION
    OPINION
    FRIEDLAND, Circuit Judge:
    The Chickasaw Nation and five pharmacies that it owns
    and operates (collectively, “the Nation”) appeal from a
    district court’s order compelling arbitration of the Nation’s
    dispute with Caremark and Caremark affiliates (collectively,
    “Caremark”). The district court explained that, in light of a
    clause in the parties’ contract delegating to the arbitrator the
    authority to resolve threshold issues regarding the scope and
    enforceability of the arbitration provision, the Nation’s
    arguments that its claims are not arbitrable must be resolved
    by the arbitrator. We affirm.
    I.
    A.
    The Chickasaw Nation is a sovereign and federally
    recognized Indian tribe that operates its own healthcare
    system, which includes the five pharmacies that are co-
    appellants in this case. 1 The Nation’s healthcare system
    serves Native persons throughout Chickasaw territory.
    Under federal law, members of federally recognized Native
    nations are eligible to receive healthcare services at the
    Nation’s facilities at no charge, and the Nation may recoup
    the cost of services that it provides to a tribal member from
    that member’s health-insurance plan.
    Caremark is the pharmacy benefit manager (“PBM”) for
    health-insurance plans that cover many tribal members
    1
    Those pharmacies are the Ardmore Health Clinic, the Chickasaw
    Nation Medical Center, the Chickasaw Nation Online Pharmacy Refill
    Center, the Purcell Health Clinic, and the Tishomingo Health Clinic.
    CAREMARK V. CHICKASAW NATION                      7
    served by the Nation’s pharmacies. As a PBM, Caremark
    manages prescription drug benefits for health insurers,
    Medicare Part D drug plans, large employers, and other
    healthcare payers. Caremark manages these benefits by
    enrolling individual pharmacies in “pharmacy networks.”
    By enrolling in a Caremark network, the pharmacies agree
    to offer preferential pricing to patients enrolled in Caremark-
    supported health-insurance plans. Under that business
    model, the health plans and their member-patients receive
    lower prices when the patients obtain their prescription drugs
    from in-network pharmacies. By enrolling in Caremark
    networks, the pharmacies avoid the administrative costs of
    submitting reimbursement claims to each patient’s
    individual insurer. Instead, an enrolled pharmacy deals only
    with Caremark, which pays each pharmacy directly for any
    prescription drugs that it provides to the patients covered by
    the Caremark-supported insurance plans.
    The Nation has signed agreements with Caremark,
    enrolling its pharmacies in Caremark’s networks to facilitate
    reimbursement for the costs of providing pharmacy services
    to tribal members. 2 Like all Caremark pharmacy-network
    agreements, each of the Nation’s agreements with Caremark
    includes two key documents: the Provider Agreement and
    the Provider Manual.
    The Provider Agreement is a three-page document
    setting forth the general terms of the relationship. It contains
    a section entitled “Entire Agreement” stating that the
    Provider Manual, among other documents, is “incorporated
    2
    The Ardmore Health Clinic, the Chickasaw Nation Online
    Pharmacy, and the Tishomingo Health Clinic enrolled in Caremark
    networks in 2003. The Purcell Health Clinic enrolled in 2005. The
    Chickasaw Nation Medical Center enrolled in 2010.
    8             CAREMARK V. CHICKASAW NATION
    by this reference as if fully set forth herein.” By signing the
    Provider Agreement, the pharmacy “acknowledges receipt
    of the Provider Manual.” 3
    The Provider Manual is a hundred-plus-page document
    that governs a pharmacy’s relationship with Caremark. The
    Manual describes, among other things, the services that
    Caremark-network pharmacies must provide, the claim-
    submission process, and the terms governing
    reimbursement. A section entitled “Miscellaneous” includes
    several subsections governing matters such as assignment of
    rights, termination of the contract, and the amendment
    process. It also includes a subsection entitled “Arbitration.”
    According to the amendment provision, the Provider
    Manual is updated from time to time, and providers accept
    amendments to the Manual by receiving the updated version
    and subsequently submitting to Caremark claims for
    reimbursement. Caremark amended the Provider Manual
    eight times between 2004 and 2020. Every version of the
    Provider Manual has included substantially the same
    amendment provision.
    The “Arbitration” subsection in every version of the
    Provider Manual has instructed that all disputes arising in
    connection with the agreement will be resolved in
    arbitration. The arbitration provision also includes a
    “delegation clause”—a clause requiring the arbitrator, rather
    than courts, to resolve threshold issues about the scope and
    enforceability of the arbitration provision. A delegation
    3
    The Provider Agreements for the Chickasaw Nation Medical
    Center and Purcell Health Clinic are in the record. The other three co-
    appellant pharmacies’ Provider Agreements, which were signed with
    Caremark’s predecessor-in-interest, are not in the record.
    CAREMARK V. CHICKASAW NATION                           9
    clause appeared in earlier versions of the Provider Manual
    through incorporation, by reference to the Rules of the
    American Arbitration Association; after 2014, a delegation
    clause was expressly set forth in the Provider Manual itself.
    Specifically, the pre-2014 versions of the Provider
    Manual included clauses stating that “[a]ny and all
    controversies in connection with or arising out of the
    Provider Agreement . . . will be exclusively settled by
    arbitration before a single arbitrator in accordance with the
    Rules of the American Arbitration Association.” Since at
    least 2002, those rules have contained a delegation clause
    stating that the “arbitrator shall have the power to rule on his
    or her own jurisdiction, including any objections with
    respect to the existence, scope or validity of the arbitration
    agreement.” See Am. Arb. Ass’n, Commercial Dispute
    Resolution Procedures (Including Mediation and
    Arbitration Rules) R-8 (2002). 4
    Since 2014, the arbitration provision in the Provider
    Manual, including its express delegation clause, has
    remained essentially the same. The arbitration provision in
    the most recent Provider Manual in the record, including the
    delegation clause (which we underline below), states:
    Any and all disputes between Provider and
    Caremark [and Caremark’s affiliates],
    including but not limited to, disputes in
    connection with, arising out of, or relating in
    any way to, the Provider Agreement or to
    Provider’s participation in one or more
    Caremark networks . . . will be exclusively
    4
    For archived versions of these rules, see Rules, Forms, Fees, Am.
    Arb. Ass’n, http://www.adr.org/ArchiveRules.
    10          CAREMARK V. CHICKASAW NATION
    settled by arbitration.      This arbitration
    provision applies to any dispute arising from
    events that occurred before, on or after the
    effective date of this Provider Manual. . . .
    The arbitrator(s) shall have exclusive
    authority to resolve any dispute relating to the
    interpretation, applicability, enforceability or
    formation of the agreement to arbitrate,
    including but not limited to, any claim that all
    or part of the agreement to arbitrate is void or
    voidable for any reason. In the event the
    arbitrator(s) determine that any provision of
    this agreement to arbitrate is invalid for any
    reason, such provision shall be stricken and
    all remaining provisions will remain in full
    force and effect. The arbitrator(s) must
    follow the rule of Law, and the award of the
    arbitrator(s) will be final and binding on the
    parties, and judgment upon such award may
    be entered in any court having jurisdiction
    thereof. Any such arbitration must be
    conducted in Scottsdale, Arizona and
    Provider agrees to such jurisdiction, unless
    otherwise agreed to by the parties in writing.
    Since at least 2004, Caremark has sent Provider Manuals
    to all network pharmacies. Caremark sent updated Manuals
    to all network pharmacies in 2004, 2007, 2009, 2011, 2014,
    2016, 2018, and 2020.         Since 2014, Caremark has
    maintained proof of delivery of the Provider Manual to all
    network pharmacies, including all Chickasaw Nation
    pharmacies.      Between 2014 and 2020, the Nation’s
    pharmacies submitted to Caremark about 1.5 million claims
    CAREMARK V. CHICKASAW NATION                    11
    for reimbursement, which collectively exceeded $173
    million in value.
    B.
    In December 2020, the Nation sued Caremark in the
    United States District Court for the Eastern District of
    Oklahoma, claiming violations of 25 U.S.C. § 1621e, a
    provision of the Indian Health Care Improvement Act
    referred to here as the “Recovery Act.”
    Congress passed the Recovery Act to enable tribal
    healthcare providers to recover the cost of healthcare
    services from third-party insurers. Although many Native
    persons were covered by employer-sponsored or other
    private health-insurance plans, their insurance contracts
    often contained coverage exceptions for care provided
    through the Indian Health Service or at tribal healthcare
    facilities.    Accordingly, the insurers were collecting
    premiums for insurance coverage for Native individuals
    whose healthcare costs the insurers were, in reality,
    reimbursing only rarely. See S. Rep. No. 100-508, at 15–16
    (1988), reprinted in 1988 U.S.C.C.A.N. 6183, 6197–98. To
    address that problem, Congress created a mechanism
    whereby “Indian tribes and tribal organizations” could
    “recover reasonable expenses incurred for the provision of
    health services to any individual through third party
    reimbursement.” H.R. Rep. No. 102-643, pt. 1, at 75 (1992).
    The statute allows tribal governments to enforce the
    statutory “right of recovery” by bringing a civil action to
    recoup from any applicable insurer the cost of services
    provided to tribal members. See 25 U.S.C. § 1621e(a),
    (e)(1)(B). The Recovery Act also states that “no provision
    of any contract . . . or other health care plan or program . . .
    shall prevent or hinder the right of recovery of . . . an Indian
    tribe[] or tribal organization.” 25 U.S.C. § 1621e(c).
    12             CAREMARK V. CHICKASAW NATION
    The Nation alleges that, since approximately 2015,
    Caremark has violated the Recovery Act in several ways.
    For example, the Nation alleges that Caremark improperly
    denied claims submitted by the Nation seeking
    reimbursement for covered medications that its pharmacies
    provided to tribal members enrolled in Caremark-managed
    health-insurance plans, and that the Recovery Act entitles
    the Nation to recover from Caremark the cost of providing
    those prescription drugs. The Nation seeks compensatory
    and punitive damages, attorney’s fees, and declaratory and
    injunctive relief.
    A few months after the Nation filed its Complaint,
    Caremark filed a Petition under the Federal Arbitration Act
    to compel arbitration of the Nation’s Recovery Act claims.
    Caremark filed that Petition in the United States District
    Court for the District of Arizona, the forum that the Provider
    Manual designates for arbitration.
    The district court granted the Petition. The court first
    explained that “[e]ach of Chickasaw Nation’s pharmacies
    has a current contract with Caremark” and that “[t]hese
    contracts contain arbitration agreements.” The court then
    declined to transfer, stay, or dismiss the action based on the
    Nation’s earlier-filed lawsuit in federal court in Oklahoma. 5
    Finally, the court held that the delegation clause in the
    5
    The district court explained that “[t]he majority of courts, including
    the Tenth Circuit in which Oklahoma is located, hold that where the
    parties have agreed to arbitrate in a particular forum, only a district court
    in that forum has the authority to compel arbitration under § 4 of the
    [Federal Arbitration Act].” (quotation marks omitted). The court
    reasoned that, if it were to “defer to the Oklahoma court on the arbitration
    issue, and the Oklahoma court were to find that the claims in this case
    were subject to arbitration, the Oklahoma court could not enforce the
    agreement and compel arbitration.”
    CAREMARK V. CHICKASAW NATION                      13
    Provider Manual was “clear and unmistakable” evidence of
    the parties’ intent to submit the threshold issue of
    arbitrability to the arbitrator and that, therefore, the
    “arbitrator must decide whether the claims in this case are
    subject to arbitration, not [the district court].”
    The Nation timely appealed and moved the district court
    for a stay of its order pending appeal, which the court denied.
    The Nation sought a stay from our court. In an unexplained
    order, a motions panel granted a stay pending appeal and
    ordered expedited briefing.
    II.
    We review de novo a district court’s decision to grant or
    deny a petition to compel arbitration. Bushley v. Credit
    Suisse First Bos., 
    360 F.3d 1149
    , 1152 (9th Cir. 2004). We
    review for clear error any factual findings underlying the
    district court’s order. O’Connor v. Uber Techs., Inc.,
    
    904 F.3d 1087
    , 1093 (9th Cir. 2018).
    III.
    The Nation advances two reasons why its Recovery Act
    claims are not arbitrable. First, the Nation argues that it is
    not bound by the arbitration provision in Caremark’s
    Provider Manual because it never clearly and unequivocally
    waived its tribal sovereign immunity. Second, and in the
    alternative, the Nation argues that the Recovery Act itself
    precludes the enforcement of any agreement to arbitrate in
    this context.
    The primary issue raised by this appeal, however, is who
    should decide whether the Nation’s claims are arbitrable—
    the arbitrator or the court. The district court sent the
    threshold arbitrability question to the arbitrator in light of the
    14           CAREMARK V. CHICKASAW NATION
    delegation clause in the Provider Manual. The Nation argues
    that the district court erred by refusing to decide for itself the
    threshold issue of arbitrability.
    A.
    We briefly explain the background legal principles that
    guide our analysis. To start, Section 2 of the Federal
    Arbitration Act (“FAA”) provides:
    A written provision in . . . a contract
    evidencing a transaction involving commerce
    to settle by arbitration a controversy
    thereafter arising out of such contract . . .
    shall be valid, irrevocable, and enforceable,
    save upon such grounds as exist at law or in
    equity for the revocation of any contract.
    
    9 U.S.C. § 2
    . Section 4 of the FAA further provides that a
    party may petition to compel arbitration in federal district
    court, and the court “shall make an order directing the parties
    to proceed to arbitration” “upon being satisfied that the
    making of the agreement for arbitration . . . is not in issue.”
    
    9 U.S.C. § 4
    .
    The Supreme Court has interpreted that statutory
    language to cabin a court’s authority to adjudicate challenges
    to contracts governed by the FAA that contain arbitration
    provisions. In general, courts may resolve challenges
    directed specifically to the validity of the arbitration
    provision itself. See Buckeye Check Cashing, Inc. v.
    Cardegna, 
    546 U.S. 440
    , 445–46 (2006). If there is no such
    challenge—or if such a challenge fails—the court must send
    to the arbitrator any other challenges, including challenges
    to the validity of the contract as a whole. 
    Id.
     For instance,
    in the presence of an otherwise-valid arbitration provision, a
    CAREMARK V. CHICKASAW NATION                    15
    challenge that “the [entire] agreement was fraudulently
    induced” or “that the illegality of one of the contract’s
    provisions renders the whole contract invalid” must be sent
    to the arbitrator. 
    Id.
     at 444–46 (enforcing an arbitration
    clause despite a challenge that the contract as a whole was
    void for illegality under state law); see also Prima Paint
    Corp. v. Flood & Conklin Mfg. Co., 
    388 U.S. 395
    , 402–04
    (1967) (enforcing an arbitration clause despite a challenge
    that the contract as a whole was fraudulently induced).
    The presence of a delegation clause further limits the
    issues that a court may decide. A delegation clause is a
    clause within an arbitration provision that delegates to the
    arbitrator gateway questions of arbitrability, such as whether
    the agreement covers a particular controversy or whether the
    arbitration provision is enforceable at all. Rent-A-Center,
    W., Inc. v. Jackson, 
    561 U.S. 63
    , 68–69 (2010). The FAA
    “allows parties to agree by contract that an arbitrator, rather
    than a court, will resolve threshold arbitrability questions as
    well as underlying merits disputes.” Henry Schein, Inc. v.
    Archer & White Sales, Inc., 
    139 S. Ct. 524
    , 527 (2019). But
    the Supreme Court has “added [the] important qualification”
    that there must be “clear and unmistakable” evidence that
    “the parties agreed to arbitrate arbitrability.” First Options
    of Chi., Inc. v. Kaplan, 
    514 U.S. 938
    , 944 (1995) (alterations
    and quotation marks omitted). The Court has held that “[a]n
    agreement to arbitrate a gateway issue is simply an
    additional, antecedent agreement the party seeking
    arbitration asks the federal court to enforce.” Rent-A-Center,
    561 U.S. at 70. In other words, a delegation clause is
    essentially a mini-arbitration agreement, nested within a
    larger one. “[T]he FAA operates on this additional
    arbitration agreement just as it does on any other.” Id.
    16            CAREMARK V. CHICKASAW NATION
    The Court has treated delegation clauses within
    arbitration provisions the same way it treats arbitration
    provisions within broader contracts. In Rent-A-Center, the
    Court held that a challenge to the validity of an entire
    arbitration agreement—there, an unconscionability
    challenge—must be decided by the arbitrator if the
    agreement includes a delegation clause that is not directly
    challenged. Id. at 70–72. The Court emphasized that a party
    must “challenge[] the delegation provision specifically” for
    a court to intervene. Id. at 71–72. Under Rent-A-Center,
    then, a valid—i.e., enforceable 6—delegation clause commits
    to the arbitrator nearly all challenges to an arbitration
    provision.
    But in Granite Rock Company v. International
    Brotherhood of Teamsters, 
    561 U.S. 287
     (2010)—decided
    just three days after Rent-A-Center—the Supreme Court
    clarified that contract-formation issues are always matters
    for judicial resolution. Granite Rock explained that the
    issues reserved to the courts for decision “always include”
    whether an arbitration agreement was formed, even in the
    presence of a delegation clause. 
    Id. at 297
    ; see 
    id. at 299
    .
    That principle follows from the fundamental premise that
    arbitration is “strictly ‘a matter of consent.’” 
    Id. at 299
    (quoting Volt Info. Scis., Inc. v. Bd. of Trs. of Leland
    Stanford Junior Univ., 
    489 U.S. 468
    , 479 (1989)). “To take
    the question of contract formation away from the courts
    would essentially force parties into arbitration when the
    parties dispute whether they ever consented to arbitrate
    anything in the first place.” Dr.’s Assocs., Inc. v.
    Alemayehu, 
    934 F.3d 245
    , 251 (2d Cir. 2019). And
    See Rent-A-Center, 
    561 U.S. at
    69 n.1 (stating that the issue of an
    6
    agreement’s “validity” concerns “whether it is legally binding”
    (emphasis omitted)).
    CAREMARK V. CHICKASAW NATION                          17
    preserving for the courts the contract-formation question
    comports with the requirement in section 4 of the FAA that
    courts enforce arbitration agreements only “upon being
    satisfied that the making of the agreement for arbitration . . .
    is not in issue.” 
    9 U.S.C. § 4
    . Accordingly, a court “should
    order arbitration of a dispute only where the court is satisfied
    that neither the formation of the parties’ arbitration
    agreement nor (absent a valid provision specifically
    committing such disputes to an arbitrator) its enforceability
    or applicability to the dispute is in issue.” 7 Granite Rock,
    
    561 U.S. at 299
    .
    The following principles emerge from the above line of
    cases. First, a court must resolve any challenge that an
    agreement to arbitrate was never formed, even in the
    presence of a delegation clause. Next, a court must also
    resolve any challenge directed specifically to the
    enforceability of the delegation clause before compelling
    arbitration of any remaining gateway issues of arbitrability.
    Finally, if the parties did form an agreement to arbitrate
    containing an enforceable delegation clause, all arguments
    going to the scope or enforceability of the arbitration
    provision are for the arbitrator to decide in the first instance.
    7
    To the extent that there may have been any lingering ambiguity
    after Granite Rock, numerous courts of appeals have since held that
    contract formation is always an issue for the court, notwithstanding the
    presence of a delegation clause. Dr.’s Assocs., Inc. v. Alemayehu,
    
    934 F.3d 245
    , 251 (2d Cir. 2019); Rowland v. Sandy Morris Fin. & Est.
    Plan. Servs., LLC, 
    993 F.3d 253
    , 258 (4th Cir. 2021); Edwards v.
    Doordash, Inc., 
    888 F.3d 738
    , 744 (5th Cir. 2018); Fedor v. United
    Healthcare, Inc., 
    976 F.3d 1100
    , 1105–06 (10th Cir. 2020). Our cases
    decided before Granite Rock are in accord. See Textile Unlimited, Inc.
    v. A..BMH & Co., Inc., 
    240 F.3d 781
    , 786 (9th Cir. 2001); Three Valleys
    Mun. Water Dist. v. E.F. Hutton & Co., 
    925 F.2d 1136
    , 1140–41 (9th
    Cir. 1991).
    18            CAREMARK V. CHICKASAW NATION
    We next apply these principles to the Nation’s two
    arguments challenging the arbitrability of its Recovery Act
    claims.
    B.
    We first address the Nation’s argument that it did not
    actually form contracts with Caremark that included
    arbitration provisions with delegation clauses. The Nation
    argues that agreeing to arbitration would have waived its
    tribal immunity, and because the Nation did not take the
    clear and unequivocal steps necessary to waive immunity, it
    cannot have agreed to the arbitration provisions. We reject
    that argument.
    The Nation does not seriously dispute that its pharmacies
    have contractual relationships with Caremark that are
    governed by the terms of the Provider Manual. The Nation
    acknowledges that all its pharmacies signed Provider
    Agreements with Caremark or with Caremark’s
    predecessors-in-interest governing reimbursement of claims
    for pharmacy services. Again, the Provider Agreements
    state that the Provider Manuals are “incorporated [in the
    Provider Agreements] by this reference as if fully set forth
    herein.” 8
    8
    The Provider Agreements signed by Ardmore Health Clinic,
    Tishomingo Health Clinic, and the Chickasaw Nation Online Pharmacy
    Refill Center are not in the record. See supra note 3. Caremark has
    submitted a declaration stating that, because its agreements use
    consistent language, those pharmacies’ Provider Agreements “would
    have contained the same language” as the Agreements signed by the
    Chickasaw Nation Health Center and Purcell Health Clinic purporting to
    incorporate the Provider Manual by reference as part of the entire
    agreement. The record also contains a 2005 Addendum to the Provider
    CAREMARK V. CHICKASAW NATION                          19
    As explained above, every version of the Provider
    Manual has included an arbitration provision delegating
    gateway questions of arbitrability to the arbitrator. The pre-
    2014 Manuals did so by incorporating the Rules of the
    American Arbitration Association, which contain a
    delegation clause. We have held that “incorporation of the
    AAA rules constitutes clear and unmistakable evidence that
    contracting parties agreed to arbitrate arbitrability.”
    Brennan v. Opus Bank, 
    796 F.3d 1125
    , 1130 (9th Cir. 2015).
    Since 2014, the Provider Manuals have expressly stated that
    the arbitrator “shall have exclusive authority to resolve any
    dispute relating to the interpretation, applicability, [or]
    enforceability . . . of the agreement to arbitrate.”
    Given that history—and considering the hundreds of
    thousands of claims the Nation has submitted to Caremark
    over the last several years—the Nation cannot plausibly
    deny that it formed contracts with Caremark. And the
    language of those contracts includes arbitration provisions
    with delegation clauses. 9
    Agreement signed by the Tishomingo Health Clinic confirming that “the
    terms” of the original Provider Agreement “includ[e] the Provider
    Manual.” In concluding that the Nation’s pharmacies have current
    contracts with Caremark that include the terms in the Provider Manuals,
    the district court implicitly credited the assertion in Caremark’s
    declaration that all the Provider Agreements signed by those pharmacies
    included the “incorporated by this reference” language and that the
    pharmacies received the Provider Manuals. The Nation has not shown
    that those factual findings are clearly erroneous.
    9
    The Nation challenges the amendment process laid out in the
    Provider Manual to argue that the most recent arbitration provision—the
    one contained in the Provider Manuals since 2014—does not govern this
    case. We need not reach that issue because, as we stated above, every
    version of the Provider Manual since the Nation’s pharmacies first
    20            CAREMARK V. CHICKASAW NATION
    The Nation does not disavow the contracts entirely.
    Instead, it asks us to “excise” the arbitration provisions while
    leaving the remainder of the parties’ agreements intact. The
    Nation argues that, because arbitration provisions are
    severable from the contracts in which they appear as a matter
    of substantive federal arbitration law, we may consider
    separately (1) whether the parties agreed to the arbitration
    provisions, and (2) whether the parties agreed to the other
    obligations in the Provider Agreement (including the
    Provider Manual). The Nation suggests that we must apply
    a different standard in answering each of those two
    questions, requiring a special, heightened showing to
    conclude, in answering the first question, that the Nation
    entered into an arbitration agreement. The Nation grounds
    its argument in sovereign-immunity principles: It argues
    that, because an arbitration agreement would waive its
    sovereign immunity, we must infer, absent clear and
    unequivocal evidence to the contrary, that the Nation did not
    agree to arbitration.
    The Nation is correct that any waiver of its sovereign
    immunity must be expressed in clear and unequivocal terms.
    C & L Enters., Inc. v. Citizen Band Potawatomi Indian Tribe
    of Okla., 
    532 U.S. 411
    , 417–18 (2001); see also Ute Indian
    Tribe of the Uintah & Ouray Rsrv. v. Utah, 
    790 F.3d 1000
    ,
    1009 (10th Cir. 2015) (Gorsuch, J.). That proposition is
    beyond dispute, but it is also beside the point. The premise
    of the Nation’s argument—that an arbitration agreement
    signed Provider Agreements has delegated gateway issues of
    arbitrability to the arbitrator. Accordingly, even if the Nation were
    correct about a flaw in the amendment procedure, our analysis of
    whether the district court was correct to send gateway issues to the
    arbitrator would not change.
    CAREMARK V. CHICKASAW NATION                            21
    always and necessarily waives tribal sovereign immunity—
    is incorrect, so its argument falls apart at the threshold. 10
    An arbitration agreement may or may not have
    implications for a tribe’s sovereign immunity, and courts
    need not resolve the sovereign-immunity implications (if
    any) before deciding whether an agreement to arbitrate exists
    at all. The Tenth Circuit’s decision in Ute Indian Tribe
    helpfully explains how a forum-selection clause—which,
    like an arbitration provision, is an agreement to bring any
    disputes to a particular forum—does not necessarily waive
    sovereign immunity; rather, the forum-selection clause may
    simply designate a forum for resolving disputes for which
    immunity is waived. See 790 F.3d at 1010. In that case, the
    tribe had agreed that “[o]riginal jurisdiction to hear and
    decide any disputes or litigation” under the contract “shall
    be in the United States District Court for the District of
    Utah.” Id. at 1009 (alteration in original). The court
    declined to find an immunity waiver because a different
    10
    The Nation is correct that—at least in the absence of a delegation
    clause in an arbitration agreement and a non-severability clause in the
    contract containing that agreement—the court might be able to sever an
    invalid arbitration provision from the contract and enforce the remainder
    of the parties’ agreement. See, e.g., Graham Oil Co. v. ARCO Prods.
    Co., 
    43 F.3d 1244
    , 1248–49 (9th Cir. 1994) (holding an arbitration clause
    invalid and striking the clause from the contract, where “neither party
    suggest[ed] that if the arbitration clause is unlawful, the entire contract
    must be invalidated”). The fact that the arbitration provision might be
    severable from the contract if the provision is ultimately found to be
    unenforceable, however, does not support the Nation’s argument that we
    should conduct a separate and more stringent contract-formation inquiry
    in deciding whether the Nation agreed to the arbitration provision in the
    first place. Moreover, in the presence of a valid delegation clause, the
    arbitrator—and not the court—would have to determine whether an
    arbitration provision is enforceable and, if not, whether it can be severed
    from the remainder of the contract. See Rent-A-Center, 
    561 U.S. at 71
    .
    22             CAREMARK V. CHICKASAW NATION
    provision of the contract stated that “no acquiescence in or
    waiver of claims of rights, sovereignty, authority,
    boundaries, jurisdiction, or other beneficial interests is
    intended by this Agreement.” 
    Id.
     at 1009–10. The court
    concluded that the tribe had agreed to proceed in the
    designated forum for any dispute for which it waived tribal
    immunity, but that it had reserved its right to stand on its
    claim of immunity on a case-by-case basis. Id. at 1010.
    As Ute Indian Tribe illustrates, the Nation’s assumption
    that a tribe’s entering an arbitration agreement will
    necessarily waive tribal immunity is unfounded—a tribal
    organization might agree to arbitrate any disputes for which
    it has waived sovereign immunity but still reserve its ability
    to choose whether to waive immunity in any given case. The
    Nation’s proposed approach here would put the cart before
    the horse, requiring us to resolve whether there has been a
    waiver of tribal immunity for particular claims for which
    arbitration is sought before determining whether an
    arbitration agreement exists at all.
    Accordingly, we reject the Nation’s argument that,
    because it did not clearly and unequivocally waive its tribal
    immunity, it cannot have agreed to the arbitration provisions
    (or the delegation clauses) in the Provider Manuals. 11
    11
    A couple of sentences in the Nation’s reply brief could be read to
    suggest that, even if valid arbitration agreements with valid delegation
    clauses exist, the Nation’s sovereign immunity bars Caremark from
    initiating a proceeding against the Nation in the Arizona district court to
    compel arbitration. That issue was not “argued specifically and
    distinctly in [the] opening brief,” nor adequately developed in the reply
    brief, so we decline to address it here. Christian Legal Soc’y Chapter of
    Univ. of Cal. v. Wu, 
    626 F.3d 483
    , 485 (9th Cir. 2010) (quoting
    Brownfield v. City of Yakima, 
    612 F.3d 1140
    , 1149 n.4 (9th Cir. 2010));
    CAREMARK V. CHICKASAW NATION                          23
    C.
    In the alternative, the Nation contends that the Recovery
    Act precludes arbitration of its claims against Caremark.
    The Nation relies primarily on language in the Recovery Act
    stating that “no provision of any contract . . . shall prevent or
    hinder the right of recovery of . . . an Indian tribe[] or tribal
    organization.” 25 U.S.C. § 1621e(c). The Nation argues
    that the arbitration procedures specified in the Provider
    Manual “prevent or hinder” the Nation’s right of recovery in
    violation of § 1621e(c)—and that the arbitration provision is
    therefore unenforceable, as applied to the Nation’s claims.
    The Nation points, for example, to the arbitration
    agreement’s specification of a statute-of-limitations period
    shorter than that in the Recovery Act. The Nation also
    argues that the Recovery Act’s language permitting the tribe
    to “institut[e] a separate civil action,” 25 U.S.C.
    § 1621e(e)(1)(B), gives the Nation the remedy of an action
    in federal court, not arbitration. 12
    The Nation’s theory that the Recovery Act displaces the
    arbitration provisions in the Provider Manuals does not
    impugn the validity of the delegation clauses specifically.
    Instead, like the unconscionability claim in Rent-A-Center,
    it is a challenge to the enforceability of the arbitration
    provisions as a whole. Rent-A-Center, 
    561 U.S. at 72
    ;
    accord Brennan, 796 F.3d at 1133 (holding that the
    see United States v. Kimble, 
    107 F.3d 712
    , 715 n.2 (9th Cir. 1997)
    (declining to address an argument that “was not coherently developed in
    [the] briefs on appeal”).
    12
    In its opening brief, the Nation also appeared to argue that the
    arbitration provision is an invalid prospective waiver of the Nation’s
    right to pursue its Recovery Act claims. The Nation disclaimed that
    argument in its reply brief, so we do not address it here.
    24           CAREMARK V. CHICKASAW NATION
    plaintiff’s unconscionability claim was for the arbitrator to
    decide because the plaintiff “failed to make any arguments
    specific to the delegation provision and instead argued that
    the [arbitration provision] as a whole [was] unconscionable”
    (quotation marks and citation omitted)). Accordingly, the
    district court was correct to “treat [the delegation clause] as
    valid under [FAA] § 2” and “enforce it under §§ 3 and 4,
    leaving any challenge to the validity of the [arbitration
    agreement] as a whole for the arbitrator.” Rent-A-Center,
    
    561 U.S. at 72
    .
    The Nation responds that, under New Prime Inc. v.
    Oliveira, 
    139 S. Ct. 532
     (2019), a delegation clause can
    never prevent a court from determining whether a statute
    precludes arbitration. We disagree. In New Prime, the
    Supreme Court held that a district court must determine for
    itself whether a contract is covered by the FAA before
    asserting its authority under that statute to enforce an
    arbitration provision. 
    Id.
     at 537–38. That is because, if a
    contract falls within an FAA-exempt category, the district
    court has no power at all to compel arbitration—including to
    compel arbitration of gateway issues pursuant to a delegation
    clause. See 
    id.
     By contrast, the Nation’s argument here does
    not call into question the district court’s authority to enforce
    the delegation clause—rather, it challenges the
    enforceability of the arbitration provision as a whole, on the
    ground that the Nation’s claims are not arbitrable because
    the procedural rules in arbitration “prevent or hinder” the
    Nation’s right of recovery under § 1621e(c). That challenge
    raises exactly the type of threshold arbitrability issue that the
    CAREMARK V. CHICKASAW NATION                              25
    parties have delegated to the arbitrator, and the district court
    was therefore correct not to decide it. 13
    IV.
    For the foregoing reasons, we affirm the judgment of the
    district court compelling arbitration. We express no opinion
    on the enforceability of the underlying arbitration provision,
    which—in light of the delegation clause—is an issue that the
    arbitrator must decide in the first instance. We do not decide,
    for example, whether the Nation has waived its sovereign
    immunity with respect to any counterclaims that Caremark
    might assert against the Nation in arbitration, or whether the
    13
    In its reply brief, the Nation notes that the procedures specified in
    the arbitration agreement “become effective at the moment of delegation
    and hamstring the Nation’s ability to arbitrate the threshold issues
    themselves.” Those procedures include the arbitration agreement’s
    prescription of a shorter statute-of-limitations period, less generous fee-
    and cost-shifting provisions (including a requirement that the party
    initiating the arbitration deposit funds in escrow to cover the expected
    costs of arbitrating), limitations on discovery and available damages, and
    confidentiality provisions. To the extent that this argument specifically
    challenges the enforceability of the delegation clause, we reject it. Most
    of the challenged arbitration procedures do not implicate at all the
    Nation’s ability to arbitrate the delegated gateway issues. The statute-
    of-limitations and damages provisions are immaterial at this stage, and
    the Nation has not explained why it would need discovery to arbitrate
    the legal question whether the Recovery Act displaces the arbitration
    provision. Nor has the Nation explained how the confidentiality
    provisions would hamper its ability to arbitrate that question. Finally,
    even if the delegation clause requires the Nation to deposit funds in
    escrow before arbitrating the gateway issues, that requirement does not
    impose a barrier sufficient to render the delegation clause unenforceable.
    The Nation can recover that deposit and recover attorney’s fees from
    Caremark if the Nation prevails on its argument that its Recovery Act
    claims are not arbitrable. The Nation has not raised any other challenges
    directed specifically to the validity of the delegation clause.
    26         CAREMARK V. CHICKASAW NATION
    Recovery Act precludes arbitration of the merits of the
    Nation’s claims.