William Attix v. Carrington Mortgage Services, LLC ( 2022 )


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  • USCA11 Case: 20-13575        Date Filed: 05/26/2022       Page: 1 of 52
    [PUBLISH]
    In the
    United States Court of Appeals
    For the Eleventh Circuit
    ____________________
    No. 20-13575
    ____________________
    WILLIAM ATTIX,
    on behalf of himself and all others similarly situated,
    Plaintiff-Appellee,
    versus
    CARRINGTON MORTGAGE SERVICES, LLC,
    Defendant-Appellant.
    ____________________
    Appeal from the United States District Court
    for the Southern District of Florida
    D.C. Docket No. 1:20-cv-22183-UU
    ____________________
    USCA11 Case: 20-13575       Date Filed: 05/26/2022     Page: 2 of 52
    2                      Opinion of the Court                20-13575
    Before BRANCH, GRANT, and BRASHER, Circuit Judges.
    BRANCH, Circuit Judge:
    Parties often agree to arbitrate disputes arising from their
    contracts. They may arbitrate all kinds of disputes, including
    whether their claims are arbitrable. In other words, parties are free
    to arbitrate not only the “merits” of their claims, but also the
    “arbitrability” of their claims. But—wait for it—parties sometimes
    dispute whether an arbitrator should arbitrate arbitrability. When
    that happens, a court must decide who decides whether the parties
    will arbitrate. This is one such case.
    In May 2020, William Attix sued his mortgage servicer,
    Carrington Mortgage Services, asserting claims under the Fair
    Debt Collection Practices Act (FDCPA), 
    15 U.S.C. § 1692
     et seq.,
    and Florida law. Attix’s claims arose from a mortgage payment he
    made to Carrington using an automated pay-by-phone service
    provided by Speedpay, a third-party payment service provider.
    Before making his mortgage payment, Attix agreed to be bound by
    Speedpay’s terms and conditions. Those terms and conditions—to
    which Attix, Speedpay, and Carrington were parties—provided
    that “any dispute arising from” Attix’s use of Speedpay’s service
    “shall be” arbitrated. They also provided that an “arbitrator shall
    also decide what is subject to arbitration unless prohibited by law,”
    and incorporated by reference an arbitration provision of the
    American Arbitration Association (“AAA”) stating that “[t]he
    arbitrator shall have the power to rule on his or her own
    jurisdiction.”
    USCA11 Case: 20-13575       Date Filed: 05/26/2022    Page: 3 of 52
    20-13575               Opinion of the Court                       3
    After Attix filed suit, Carrington moved to compel
    arbitration. Carrington argued that Attix’s claims arose from his
    use of Speedpay’s service and therefore must be arbitrated under
    the terms and conditions to which Attix had agreed. Carrington
    also argued that, by agreeing that an arbitrator would decide “what
    is subject to arbitration” and would “rule on his or her own
    jurisdiction,” the parties had contracted to arbitrate any disputes
    about whether Attix’s claims were arbitrable. Attix conceded that
    he had agreed to arbitrate claims arising from his use of Speedpay’s
    service, including the claims he had asserted against Carrington,
    but argued that a provision of the Dodd-Frank Wall Street Reform
    and Consumer Protection Act (Dodd-Frank Act), Pub. L. No. 111-
    203, 
    124 Stat. 1376
    , prohibited enforcement of the parties’
    arbitration agreement.
    The district court denied Carrington’s motion to compel
    arbitration. The district court found that the parties had entered
    into a valid agreement to arbitrate claims arising from Attix’s use
    of Speedpay’s service and that Attix’s claims against Carrington
    were covered by that agreement. But the district court ruled that
    the Dodd-Frank Act prohibited enforcement of the parties’
    arbitration agreement. The district court noted the provision of
    the Speedpay terms and conditions directing that an arbitrator
    decide “what is subject to arbitration,” but said that provision had
    no application in this case.
    On appeal, Carrington challenges the district court’s denial
    of its motion to compel arbitration on two grounds. First,
    USCA11 Case: 20-13575        Date Filed: 05/26/2022     Page: 4 of 52
    4                      Opinion of the Court                 20-13575
    Carrington argues that the district court erred in even deciding
    whether the Dodd-Frank Act prohibits enforcement of the parties’
    arbitration agreement. Carrington asserts that, by agreeing that an
    arbitrator would decide “what is subject to arbitration” and would
    “rule on his or her own jurisdiction,” the parties agreed that an
    arbitrator would decide such threshold arbitrability issues. Second,
    Carrington argues that, in any case, the district court erred in
    finding that the Dodd-Frank Act prohibits enforcement of the
    parties’ arbitration agreement.
    Carrington is right on the first point, which means the
    second is not for us to decide. In the terms and conditions
    governing Attix’s use of Speedpay’s service, Attix and Carrington
    clearly and unmistakably agreed that an arbitrator would decide all
    threshold questions about the arbitrability of Attix’s claims,
    including whether their arbitration agreement is enforceable. Attix
    argues that the parties agreed to arbitrate only some, but not all,
    threshold arbitrability issues, but his interpretation of the parties’
    agreement is unavailing. Moreover, although he claims that he
    has, Attix has not specifically challenged the enforceability of the
    parties’ agreement to arbitrate threshold questions about the
    arbitrability of his claims. Attix’s Dodd-Frank Act challenge relates
    only to the enforceability of the parties’ separate agreement to
    arbitrate the merits of his claims, and the parties have agreed to
    submit questions about the enforceability of that agreement to an
    arbitrator. Thus, the arbitrability dispute in this case—i.e., whether
    USCA11 Case: 20-13575        Date Filed: 05/26/2022   Page: 5 of 52
    20-13575              Opinion of the Court                       5
    the Dodd-Frank Act prohibits enforcement of the parties’
    arbitration agreement—is for an arbitrator to decide.
    After review and with the benefit of oral argument, we
    reverse and remand with instructions to compel arbitration and
    stay proceedings in the district court.
    I.    Background
    In 2008, William Attix took out a home mortgage loan.
    Later, after Attix defaulted, Carrington became his mortgage
    servicer. In May 2020, Attix made a mortgage payment to
    Carrington using Speedpay’s automated phone payment service.
    When Attix dialed Speedpay’s line, Speedpay’s automated system
    informed him that he would be charged a $10 convenience fee for
    using Speedpay’s service. Through a telephonic prompt, Attix
    agreed to pay the $10 fee.
    Before Attix completed his mortgage payment, Speedpay’s
    automated system informed him that “the terms and conditions
    applicable to this payment are located at Speedpay.com/terms,”
    and directed Attix to press 1 “to complete your transaction and
    accept these terms.” The applicable terms and conditions located
    on Speedpay’s website stated:
    THIS PAYMENT SERVICE IS SUBJECT TO THE
    FOLLOWING TERMS AND CONDITIONS.
    Do not use or access this Website or Service if You do
    not agree to be bound by these Terms and
    Conditions.
    USCA11 Case: 20-13575       Date Filed: 05/26/2022    Page: 6 of 52
    6                      Opinion of the Court                20-13575
    These Terms and Conditions (“Terms and
    Conditions”) are in effect for all transactions
    processed through this payments website
    (“Website”) on or after May 9, 2019, and apply to and
    govern Your access to and use of this Website, the
    Service and all Alternative Channels. This payment
    processing service is offered to You on behalf of your
    Biller (“Service”).
    . . . These Terms and Conditions also apply to Service
    transactions, or Payments, made by or through any
    “Alternative Payment Channels” including those
    Payments initiated, or completed through, Integrated
    Voice Response (IVR) systems, customer service
    representatives, telephone, internet, or any other
    means or mechanisms of Payment acceptance.
    The Speedpay terms and conditions defined “User,” “You,”
    and “Your” as “a user of this Website or any Alternative Payment
    Channel, located in the U.S., who is making a payment to the
    Biller.” They defined “Speedpay” as “Speedpay, an ACI
    Worldwide company, and, as applicable, its affiliates and parent
    company who support the Service.” And they defined “Biller” as
    “the receiver of Your Payment, which is generally a business that
    is a client of Speedpay that has authorized Speedpay to process
    Payments from its customers.” 1
    1
    The parties agree that, when Attix made his mortgage payment using
    Speedpay’s service, Carrington was the “Biller.”
    USCA11 Case: 20-13575       Date Filed: 05/26/2022     Page: 7 of 52
    20-13575              Opinion of the Court                        7
    The Speedpay terms and conditions contained the following
    arbitration provision:
    Unless You opt out as set forth below, any dispute
    arising from or relating to Service or your Payment(s)
    shall be resolved by mandatory and binding
    arbitration. The arbitrator shall also decide what is
    subject to arbitration unless prohibited by law. The
    arbitration will be administered by American
    Arbitration Association (“AAA”) under its Consumer
    Arbitration Rules, which are available at
    https://www.adr.org/active-rules. You will be
    responsible for up to $200 of the administration fees.
    We, or the Arbitrator, may reduce this amount if you
    demonstrate hardship. This agreement is governed
    by the Federal Arbitration Act[,] 
    9 U.S.C. § 1
     et seq.
    (“FAA”), and any award shall be final and binding,
    and may be entered as judgment in any court of
    competent jurisdiction. Any arbitration shall take
    place on an individual basis; class actions or
    consolidation of arbitrations are not permitted. The
    Arbitrator shall be required to follow applicable
    substantive law and shall have no authority to deviate
    therefrom. If any part of this paragraph is deemed
    invalid, it shall not invalidate the other parts. If AAA
    is unwilling or unavailable to administer the
    arbitration, the parties or a court will select another
    arbitrator in accordance with the FAA. You may opt
    out of arbitration within 30 days after initiating a
    Payment by calling (866) 316-3360. IF YOU DO NOT
    OPT OUT, YOU WILL WAIVE ANY RIGHT TO A
    USCA11 Case: 20-13575               Date Filed: 05/26/2022   Page: 8 of 52
    8                             Opinion of the Court               20-13575
    TRIAL BY JURY OR JUDGE IN COURT AND ANY
    RIGHT TO PARTICIPATE IN A CLASS ACTION.[ 2]
    (emphasis omitted).
    The “Consumer Arbitration Rules” that the arbitration
    provision referenced are a publicly available set of AAA rules for
    arbitrating disputes arising from consumer contracts with
    standardized arbitration clauses. See American Arbitration
    Association, Consumer Arbitration Rules 6 (amended and effective
    Sept. 1, 2014), adr.org/sites/default/files/Consumer-Rules-
    Web.pdf. Arbitrations that proceed under the Consumer
    Arbitration Rules are administered by the AAA and conducted by
    a neutral arbitrator selected by either the parties or the AAA. See
    
    id.
     R-1, R-15, R-16. Rule 14 of the Consumer Arbitration Rules—
    the “Jurisdiction” section—provides 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 or to the arbitrability of any
    claim or counterclaim.
    
    Id.
     R-14(a).
    On May 26, 2020—just a few days after he used Speedpay’s
    service to make his mortgage payment—Attix filed a putative class
    action suit against Carrington, asserting claims under the FDCPA
    and Florida law. Attix alleged that Carrington violated those laws
    2
    Attix did not opt out of arbitration.
    USCA11 Case: 20-13575            Date Filed: 05/26/2022        Page: 9 of 52
    20-13575                  Opinion of the Court                               9
    by using its payment service provider to collect convenience fees
    for mortgage payments made online or over the phone and then
    retaining some or all of those convenience fees for itself. 3
    After Attix filed suit, Carrington moved to compel
    arbitration and stay proceedings in the district court. In its motion,
    Carrington argued that Attix and Carrington were parties to the
    terms and conditions governing Attix’s use of Speedpay’s service to
    make his mortgage payment in May 2020; that Attix’s claims arose
    from his use of Speedpay’s service; and that Attix’s claims were
    therefore governed by the parties’ agreement to arbitrate “any
    dispute arising from or relating to Service or your Payment(s).”
    Carrington also argued that, by agreeing that “[t]he arbitrator shall
    also decide what is subject to arbitration unless prohibited by law,”
    and by incorporating the AAA’s rules for consumer arbitrations
    into their agreement, the parties had agreed to “delegate” any
    disputes about the arbitrability of Attix’s claims to an arbitrator. In
    3
    Although the substantive details of Attix’s claims are not relevant to this
    appeal, by way of background, Attix alleged in his class action complaint that,
    by collecting and retaining convenience fees for mortgage payments made
    online or over the phone, Carrington violated the FDCPA’s prohibition
    against “debt collector[s]” collecting fees incidental to principal debt
    obligations that are not “expressly authorized by the agreement creating the
    debt or permitted by law.” See 15 U.S.C. § 1692f(1). In his state-law counts,
    Attix alleged that, when it collected and retained convenience fees, Carrington
    also: (1) violated two Florida consumer protection statutes; and (2) breached
    the terms of Attix’s mortgage loan agreement or, in the alternative, was
    unjustly enriched.
    USCA11 Case: 20-13575      Date Filed: 05/26/2022     Page: 10 of 52
    10                     Opinion of the Court               20-13575
    response, Attix argued that the parties’ agreement to arbitrate his
    claims arising from his use of Speedpay’s service “violate[d] the
    Dodd-Frank Act,” which “prohibits the use of arbitration
    provisions or pre-dispute waivers of federal statutory causes of
    action in connection with residential mortgages.”
    The district court denied Carrington’s motion to compel
    arbitration. The district court made several findings that, on
    appeal, are undisputed: (1) Carrington was a party to the terms and
    conditions governing Attix’s use of Speedpay’s service to make his
    mortgage payment in May 2020; (2) in those terms and conditions,
    the parties entered into a valid agreement to arbitrate claims
    “arising from or relating to” Attix’s use of Speedpay’s service; and
    (3) Attix’s claims against Carrington arose from his use of
    Speedpay’s service and fell within the scope of the parties’
    arbitration agreement. Even so, the district court denied
    Carrington’s motion, finding that 15 U.S.C. § 1639c—a provision
    of the Dodd-Frank Act setting out “minimum standards for
    residential mortgage loans”—“prohibit[ed] arbitration” of Attix’s
    claims. Subsection (e)(3) of that statute provides:
    No provision of any residential mortgage loan or of
    any extension of credit under an open end consumer
    credit plan secured by the principal dwelling of the
    consumer, and no other agreement between the
    consumer and the creditor relating to the residential
    mortgage loan or extension of credit referred to in
    USCA11 Case: 20-13575               Date Filed: 05/26/2022         Page: 11 of 52
    20-13575                      Opinion of the Court                                 11
    paragraph (1),[ 4] shall be applied or interpreted so as
    to bar a consumer from bringing an action in an
    appropriate district court of the United States, or any
    other court of competent jurisdiction, pursuant to
    section 1640 of this title or any other provision of law,
    for damages or other relief in connection with any
    alleged violation of this section, any other provision
    of this subchapter, or any other Federal law.
    15 U.S.C. § 1639c(e)(3). The district court found that § 1639c(e)(3)
    prohibited arbitration of Attix’s claims arising from his use of
    Speedpay’s service to make his mortgage payment to Carrington.
    In reaching that conclusion, the district court found that, under the
    statute: (1) Attix was a “consumer”; (2) Carrington was a
    “creditor”; and (3) the terms and conditions governing Attix’s use
    of Speedpay’s service were an “agreement” between Attix and
    Carrington “relating to” Attix’s residential mortgage loan.
    Accordingly, the district court found that the Speedpay terms and
    conditions were an “agreement between [a] consumer and [a]
    creditor relating to [a] residential mortgage loan” under
    4
    “Paragraph (1)” is 15 U.S.C. § 1639c(e)(1), a related provision that states:
    No residential mortgage loan and no extension of credit under
    an open end consumer credit plan secured by the principal
    dwelling of the consumer may include terms which require
    arbitration or any other nonjudicial procedure as the method
    for resolving any controversy or settling any claims arising out
    of the transaction.
    15 U.S.C. § 1639c(e)(1). Section 1639c(e)(1) is not at issue in this case.
    USCA11 Case: 20-13575             Date Filed: 05/26/2022           Page: 12 of 52
    12                          Opinion of the Court                         20-13575
    § 1639c(e)(3). And, the district court ruled that, because
    § 1639c(e)(3) states that such agreements “shall [not] be applied or
    interpreted so as to bar a consumer from bringing an action in an
    appropriate district court of the United States,” the statute
    prohibited arbitration of Attix’s claims.
    Finally, the district court noted that the parties had agreed,
    in the “delegation” clause of the Speedpay terms and conditions,
    that an “arbitrator shall also decide what is subject to arbitration
    unless prohibited by law.” But the district court declined to
    consider whether questions about the arbitrability of Attix’s claims
    were committed to an arbitrator’s review under that provision,
    finding that “there [was] no bona fide dispute as to the scope of the
    [parties’] arbitration agreement.”
    Carrington timely appealed from the district court’s denial
    of its motion to compel arbitration. 5
    5
    After Carrington filed its notice of appeal, it filed a motion in the district court
    to stay proceedings in that court pending appeal. See Blinco v. Green Tree
    Servicing, LLC, 
    366 F.3d 1249
    , 1253 (11th Cir. 2004) (“When a litigant files a
    motion to stay litigation in the district court pending an appeal from the denial
    of a motion to compel arbitration, the district court should stay the litigation
    so long as the appeal is non-frivolous.”). In that motion, Carrington argued,
    among other things, that the district court’s decision to disregard the
    “delegation” clause in the Speedpay terms and conditions “conflict[ed] with
    controlling Supreme Court precedent requiring courts to rigorously enforce
    delegation clauses,” and that the district court had erred in deciding whether
    the Dodd-Frank Act prohibited arbitration of his claims, rather than
    compelling arbitration so that an arbitrator could decide that issue.
    USCA11 Case: 20-13575           Date Filed: 05/26/2022          Page: 13 of 52
    20-13575                  Opinion of the Court                              13
    II. Standard of Review
    We review the denial of a motion to compel arbitration de
    novo. Jenkins v. First Am. Cash Advance of Ga., 
    400 F.3d 868
    , 873
    (11th Cir. 2005).
    III. Discussion
    In this appeal, we determine whether an arbitrator must
    decide if the parties’ agreement to arbitrate claims arising from
    Attix’s use of Speedpay’s service is enforceable under the Dodd-
    The district court denied Carrington’s motion to stay proceedings pending
    appeal. As to Carrington’s argument that it had erred in deciding whether the
    Dodd-Frank Act prohibited arbitration of his claims, the district court said:
    Defendant argues that the appeal is non-frivolous because the
    [parties’] Arbitration Agreement [in the Speedpay terms and
    conditions] contained a delegation clause and under Supreme
    Court precedent, a court may not decide an arbitrability
    question that the parties have delegated to an arbitrator. But
    this argument ignores Dodd-Frank. The delegation clause [in
    the Speedpay terms and conditions] provides that “[t]he
    arbitrator shall also decide what is subject to arbitration unless
    prohibited by law.” The delegation clause therefore evinces a
    clear intent for the Court, not the arbitrator, to determine
    whether arbitration of any claims is “prohibited by law,”
    which is precisely what the Court did in this case.
    (quotation and citations omitted; emphasis in original).
    After the district court denied Carrington’s motion to stay proceedings
    pending appeal, Carrington moved in this Court for the same relief. We found
    that Carrington’s appeal is not frivolous and granted Carrington’s motion to
    stay proceedings in the district court in a summary order.
    USCA11 Case: 20-13575             Date Filed: 05/26/2022         Page: 14 of 52
    14                          Opinion of the Court                        20-13575
    Frank Act. Carrington argues that, in the Speedpay terms and
    conditions, the parties clearly and unmistakably agreed to delegate
    questions about the arbitrability of Attix’s claims to an arbitrator,
    including questions about whether the parties’ agreement to
    arbitrate those claims is enforceable. In response, Attix challenges
    the scope of the parties’ delegation agreement, arguing that the
    parties agreed to delegate some, but not all, questions of
    arbitrability to an arbitrator. Attix also argues that his statutory
    challenge based on the Dodd-Frank Act represents a “specific
    challenge” to the enforceability of the parties’ agreement to
    delegate threshold arbitrability issues. 6
    We find that, in the Speedpay terms and conditions, Attix
    and Carrington clearly and unmistakably agreed to delegate all
    questions of arbitrability to an arbitrator, including the arbitrability
    dispute in this case—i.e., whether the parties’ agreement to
    arbitrate Attix’s claims is enforceable under the Dodd-Frank Act.
    Moreover, Attix’s Dodd-Frank Act challenge relates only to the
    enforceability of the parties’ agreement to arbitrate the merits of
    his claims, not the enforceability of the parties’ separate agreement
    to arbitrate the arbitrability of his claims, and is therefore an issue
    for the arbitrator to decide. Thus, we enforce the parties’
    6
    The second issue in this appeal is whether the Dodd-Frank Act prohibits
    enforcement of the parties’ agreement to arbitrate Attix’s claims. Because we
    resolve the first issue in this appeal in Attix’s favor, we do not reach the second
    issue, which is for an arbitrator to decide.
    USCA11 Case: 20-13575     Date Filed: 05/26/2022    Page: 15 of 52
    20-13575              Opinion of the Court                     15
    agreement as written and direct the district court to compel
    arbitration.
    We begin with settled principles of law. The Federal
    Arbitration Act (FAA), 
    9 U.S.C. § 1
     et seq., provides that:
    A written provision in . . . a contract evidencing a
    transaction involving commerce to settle by
    arbitration a controversy thereafter arising out of
    such contract or transaction . . . 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
    . The FAA “reflect[s] both a liberal policy favoring
    arbitration, and the fundamental principle that arbitration is a
    matter of contract.” AT&T Mobility LLC v. Concepcion, 
    563 U.S. 333
    , 339 (2011) (citation and quotations omitted). “In line with
    these principles, courts must place arbitration agreements on an
    equal footing with other contracts, and enforce them according to
    their terms.” 
    Id.
     (citation omitted). Under the FAA, “any doubts
    concerning the scope of arbitrable issues should be resolved in
    favor of arbitration.” Moses H. Cone Mem’l Hosp. v. Mercury
    Constr. Corp., 
    460 U.S. 1
    , 24–25 (1983).
    The FAA “also establishes procedures by which federal
    courts implement [its] substantive rule.” Rent-A-Center, W., Inc.
    v. Jackson, 
    561 U.S. 63
    , 68 (2010). A party to an arbitration
    agreement may move “for an order directing that such arbitration
    proceed in the manner provided for in such agreement” under § 4
    USCA11 Case: 20-13575            Date Filed: 05/26/2022         Page: 16 of 52
    16                         Opinion of the Court                       20-13575
    of the FAA, and for a stay of proceedings in federal court pending
    the outcome of arbitration under § 3. 7 See 
    9 U.S.C. §§ 3
    –4. Before
    enforcing an arbitration agreement, the court should ensure that
    the agreement was formed and that it applies to the dispute at
    hand. See 
    id.
     § 4 (the court must compel arbitration “upon being
    satisfied that the making of the agreement for arbitration or the
    failure to comply therewith is not in issue”); id. § 3 (the court must
    stay proceedings in federal court “upon being satisfied that the
    issue involved in such suit or proceeding is referable to arbitration
    under such an agreement”). The court should also determine
    whether, under § 2, there are any “‘grounds as exist at law or in
    equity for the revocation of any contract’” that “invalidat[e]” the
    arbitration agreement or “permit[] [it] . . . to be declared
    unenforceable.” Concepcion, 
    563 U.S. at 339
     (quoting 
    9 U.S.C. § 2
    ). If the parties’ arbitration agreement applies to their dispute
    and no grounds render it invalid or unenforceable, the court “shall”
    compel arbitration and stay proceedings in federal court. 
    9 U.S.C. §§ 3
    –4.
    7
    The FAA’s provisions “do not themselves support federal jurisdiction.”
    Badgerow v. Walters, 
    142 S. Ct. 1310
    , 1316 (2022); cf. 
    id.
     at 1315–18 (describing
    how, when a defendant presents a standalone petition to compel arbitration
    in federal court under § 4 of the FAA, the district court may “look through” to
    the “underlying substantive dispute” to assess its jurisdiction). In this case,
    there is no dispute that the federal courts have subject-matter jurisdiction.
    Carrington moved to compel arbitration after Attix asserted an FDCPA claim
    raising a federal question. See 
    28 U.S.C. § 1331
    .
    USCA11 Case: 20-13575       Date Filed: 05/26/2022     Page: 17 of 52
    20-13575               Opinion of the Court                        17
    The classic arbitration agreement is an agreement to
    arbitrate any claims arising from a contract between two parties.
    See, e.g., Doe v. Princess Cruise Lines, Ltd., 
    657 F.3d 1204
    , 1214–
    15 (11th Cir. 2011) (addressing an agreement to arbitrate “any and
    all disputes, claims, or controversies whatsoever . . . relating to or
    in any way arising out of or connected with” an employment
    contract). In other words, the classic arbitration agreement is an
    agreement to arbitrate the “merits” of the parties’ claims if a
    dispute later arises between them. See Henry Schein, Inc. v. Archer
    & White Sales, Inc., 
    139 S. Ct. 524
    , 527, 529 (2019). These
    agreements to arbitrate are typically nested within the parties’
    larger contract, which may involve employment, goods or
    services, insurance, or another type of transaction. See, e.g.,
    Buckeye Check Cashing, Inc. v. Cardegna, 
    546 U.S. 440
    , 442–43
    (2006) (construing an arbitration agreement contained within a
    contract for check cashing services).
    Sometimes, parties agree not only to arbitrate the merits of
    any claims that arise from their contract, but also to arbitrate any
    “threshold” or “gateway” questions about the “arbitrability” of
    those claims, such as questions about the “enforceability, scope,
    [or] applicability” of the parties’ agreement to arbitrate their
    claims. Jones v. Waffle House, Inc., 
    866 F.3d 1257
    , 1264 (11th Cir.
    2017). By default, a court would normally decide threshold
    disputes about whether a party’s claims are arbitrable. See U.S.
    Nutraceuticals, LLC v. Cyanotech Corp., 
    769 F.3d 1308
    , 1311 (11th
    Cir. 2014) (“[O]rdinarily, the question of arbitrability is undeniably
    USCA11 Case: 20-13575             Date Filed: 05/26/2022           Page: 18 of 52
    18                          Opinion of the Court                         20-13575
    an issue for judicial determination.” (quotation omitted and
    alteration adopted)). But parties are free to have an arbitrator
    decide their threshold disputes instead. See Henry Schein, 
    139 S. Ct. at 527
     (“[P]arties [may] agree by contract that an arbitrator,
    rather than a court, will resolve threshold arbitrability questions.”).
    An agreement to arbitrate threshold arbitrability issues is
    often called a “delegation” agreement, because it delegates the
    resolution of disputes about the arbitrability of the parties’ claims
    to an arbitrator. See Rent-A-Center, 
    561 U.S. at 68
    . A delegation
    agreement “is simply an additional, antecedent agreement the
    party seeking arbitration asks the federal court to enforce, and the
    FAA operates on this additional arbitration agreement just as it
    does on any other.” 
    Id. at 70
    ; see also New Prime Inc. v. Oliveira,
    
    139 S. Ct. 532
    , 538 (2019) (“A delegation clause is merely a
    specialized type of arbitration agreement.”). As with any
    arbitration agreement, before enforcing a delegation agreement,
    the court should ensure that the agreement was formed, that it
    applies to the dispute at hand, and that no grounds render it invalid
    or unenforceable.8 See Rent-A-Center, 
    561 U.S. at
    69 (citing 
    9 U.S.C. §§ 2
    –4).
    8
    Although it is the court’s obligation to determine, before enforcing a
    delegation agreement, that no grounds render the delegation agreement
    invalid or unenforceable, see 
    9 U.S.C. § 2
    , it is the parties’ obligation to tell the
    court what those grounds might be. In other words, it is up to the parties to
    specifically challenge the delegation agreement’s validity or enforceability.
    See Rent-A-Center, 
    561 U.S. at
    70–72. More on that later.
    USCA11 Case: 20-13575        Date Filed: 05/26/2022      Page: 19 of 52
    20-13575                Opinion of the Court                          19
    Further, when analyzing whether the parties to a contract
    have agreed to arbitrate threshold questions of arbitrability, we
    “reverse[]” the FAA’s standard “presumption” favoring arbitration.
    JPay, Inc. v. Kobel, 
    904 F.3d 923
    , 929 (11th Cir. 2018). “Courts
    should not assume that the parties agreed to arbitrate arbitrability
    unless there is clear and unmistakable evidence that they did so.”
    First Options of Chi., Inc. v. Kaplan, 
    514 U.S. 938
    , 944 (1995)
    (quotation omitted). Thus, unlike with agreements to arbitrate the
    merits of the parties’ claims arising from their contract, we resolve
    ambiguities in an agreement to arbitrate questions about the
    arbitrability of those claims in favor of the party opposing
    arbitration. See 
    id.
     at 944–45. However, if the court finds that the
    parties have clearly and unmistakably agreed to delegate questions
    of arbitrability to an arbitrator, it “must respect the parties’ decision
    as embodied in the contract.” Henry Schein, 
    139 S. Ct. at 531
    . “Just
    as a court may not decide a merits question that the parties have
    delegated to an arbitrator, a court may not decide an arbitrability
    question that the parties have delegated to an arbitrator.” 
    Id. at 530
    .
    Until recently, certain courts routinely decided questions of
    arbitrability themselves, even when the parties had agreed to
    delegate those questions to an arbitrator, if the courts found that
    the arguments in favor of requiring arbitration of the parties’ claims
    were “wholly groundless.” See 
    id.
     at 527–28. In Henry Schein, the
    Supreme Court struck down this “wholly groundless” exception to
    the FAA, noting that it “short-circuit[s] the process” to which the
    USCA11 Case: 20-13575       Date Filed: 05/26/2022     Page: 20 of 52
    20                     Opinion of the Court                 20-13575
    parties have agreed. 
    Id.
     The Court made clear that the FAA leaves
    no room for such judicial maneuvers:
    We must interpret the [Federal Arbitration] Act as
    written, and the Act in turn requires that we interpret
    the contract as written. When the parties’ contract
    delegates the arbitrability question to an arbitrator, a
    court may not override the contract. In those
    circumstances, a court possesses no power to decide
    the arbitrability issue.
    
    Id. at 529
    .
    With these principles of law in mind, we proceed to our
    analysis of whether an arbitrator should decide if the parties’
    agreement to arbitrate claims arising from Attix’s use of Speedpay’s
    service is enforceable under the Dodd-Frank Act. We analyze this
    issue in two parts. First, we consider whether the parties clearly
    and unmistakably agreed to delegate questions of arbitrability to an
    arbitrator. We find that they did. Second, we consider whether
    Attix has specifically challenged the enforceability of the parties’
    delegation agreement. We find that he has not. Thus, we enforce
    the parties’ delegation agreement as written and compel
    arbitration.
    A. The Parties Clearly and Unmistakably Agreed to
    Delegate Questions of Arbitrability to an Arbitrator
    We first consider whether Attix and Carrington clearly and
    unmistakably agreed to delegate questions of arbitrability to an
    arbitrator. We find that they did. In two separate provisions of the
    USCA11 Case: 20-13575      Date Filed: 05/26/2022    Page: 21 of 52
    20-13575               Opinion of the Court                      21
    Speedpay terms and conditions—an express delegation clause and
    an incorporation of the AAA’s rules for consumer arbitrations—the
    parties clearly and unmistakably agreed to delegate questions of
    arbitrability. Attix challenges the scope of the parties’ delegation
    agreement, arguing that the parties agreed to delegate only some
    questions of arbitrability to an arbitrator, but not others. But
    Attix’s reading of the parties’ delegation agreement is unnatural,
    ungrammatical, and contrary to the normal way that delegation
    agreements function. By its plain terms, the parties’ delegation
    agreement sends all questions of arbitrability to an arbitrator,
    including the arbitrability dispute in this case.
    We start with the text of the arbitration section in the
    Speedpay terms and conditions. In relevant part, that section
    states:
    [A]ny dispute arising from or relating to Service or
    your Payment(s) shall be resolved by mandatory and
    binding arbitration. The arbitrator shall also decide
    what is subject to arbitration unless prohibited by
    law. The arbitration will be administered by
    American Arbitration Association (“AAA”) under its
    Consumer Arbitration Rules, which are available at
    https://www.adr.org/active-rules.
    (emphasis omitted).
    Each sentence in this paragraph is significant. In the first
    sentence—“any dispute arising from or relating to Service or your
    Payment(s) shall be resolved by mandatory and binding
    USCA11 Case: 20-13575        Date Filed: 05/26/2022     Page: 22 of 52
    22                      Opinion of the Court                 20-13575
    arbitration”—the parties agreed to arbitrate Attix’s claims arising
    from his use of Speedpay’s service. There is no dispute about what
    this provision means or its application in this case. On appeal, the
    parties agree that, in this provision, they agreed to arbitrate Attix’s
    claims arising from his use of Speedpay’s service, including the
    claims Attix has asserted against Carrington in this suit.
    The second and third sentences—a clause directing that an
    arbitrator “shall also decide what is subject to arbitration,”
    followed by an incorporation of the AAA’s rules for consumer
    arbitrations—constitute the parties’ delegation agreement. In each
    of these two provisions, Attix and Carrington clearly and
    unmistakably agreed to delegate questions of arbitrability to an
    arbitrator. Attix does not dispute that the parties agreed to delegate
    at least some questions of arbitrability. However, he disputes the
    scope of the parties’ delegation agreement, arguing that the parties
    agreed to send most, but not all, questions of arbitrability to an
    arbitrator. Below, we construe first the parties’ agreement that an
    arbitrator “shall also decide what is subject to arbitration”—i.e.,
    their “express” delegation clause—and then construe the parties’
    incorporation of the AAA rules. We then evaluate, and reject,
    Attix’s assertion that the parties agreed to delegate only some
    questions of arbitrability. In fact, the parties clearly and
    unmistakably agreed to delegate all questions of arbitrability.
    First, we consider the parties’ express delegation clause. The
    Speedpay terms and conditions state: “The arbitrator shall also
    decide what is subject to arbitration unless prohibited by law.”
    USCA11 Case: 20-13575       Date Filed: 05/26/2022    Page: 23 of 52
    20-13575               Opinion of the Court                       23
    This provision contains classic delegation language.              By
    committing issues about “what is subject to arbitration” to an
    arbitrator’s review, the provision clearly and unmistakably sends
    threshold arbitrability disputes to an arbitrator instead of a court.
    We have previously interpreted similar contract language
    providing that an arbitrator would decide “[a]ny issue regarding
    whether a particular dispute or controversy is . . . subject to
    arbitration” as an agreement to delegate questions of arbitrability
    to an arbitrator. See Given v. M&T Bank Corp., 
    674 F.3d 1252
    ,
    1255–56 (11th Cir. 2012) (finding that, by agreeing to arbitrate
    issues about “whether a particular dispute or controversy is . . .
    subject to arbitration,” the parties agreed to arbitrate threshold
    questions about “whether the arbitration agreement covers a
    particular controversy” and “whether [the] claims are within the
    scope of the arbitration agreement” (quotation omitted and
    alterations adopted)); see also Jones, 866 F.3d at 1267 (noting that
    the provision in Given “manifested a clear and unmistakable intent
    to arbitrate gateway issues” (citing Given, 
    674 F.3d at 1255
    )).
    Next, we consider the parties’ incorporation of the AAA
    rules for consumer arbitrations. The Speedpay terms and
    conditions state: “The arbitration will be administered by
    American Arbitration Association (“AAA”) under its Consumer
    Arbitration     Rules,     which        are     available    at
    https://www.adr.org/active-rules.” Rule 14(a) of the AAA’s
    Consumer Arbitration Rules—the “Jurisdiction” section—
    provides:
    USCA11 Case: 20-13575      Date Filed: 05/26/2022    Page: 24 of 52
    24                     Opinion of the Court               20-13575
    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 or to the arbitrability of any
    claim or counterclaim.
    By incorporating this AAA rule about the arbitrator’s
    “power to rule on his or her own jurisdiction” into their
    agreement, Attix and Carrington clearly and unmistakably agreed
    to arbitrate threshold arbitrability disputes. We do not interpret
    this provision in first light. We have seen this precise language
    before, holding, in at least two prior cases, that an “incorporation
    of AAA rules giving an arbitrator the power to rule on his or her
    own jurisdiction constitutes a clear and unmistakable delegation of
    questions of arbitrability.” JPay, 904 F.3d at 937–39 (interpreting
    identical language in two sets of AAA rules “as clearly and
    unmistakably evincing an intent to delegate questions of
    arbitrability”); Terminix Int’l Co. v. Palmer Ranch Ltd. P’ship, 
    432 F.3d 1327
    , 1332–33 (11th Cir. 2005) (stating that, by incorporating
    identical language in the AAA’s rules for commercial arbitrations
    into their agreement, “the parties clearly and unmistakably agreed
    that the arbitrator should decide whether the arbitration clause is
    valid”). In fact, we have held that incorporating the AAA’s
    jurisdictional rules into an agreement constitutes clear and
    unmistakable evidence of the parties’ intent to delegate questions
    of arbitrability even if no other delegation language appears
    elsewhere in the contract. See JPay, 904 F.3d at 939, 942 (“[E]ither
    JPay’s incorporation of AAA rules or its express delegation clause
    USCA11 Case: 20-13575        Date Filed: 05/26/2022     Page: 25 of 52
    20-13575                Opinion of the Court                        25
    would have been enough, on its own, to delegate the question of
    [arbitrability at issue].”). Here, of course, clear delegation language
    does appear elsewhere in the parties’ agreement. Thus, in two
    separate provisions of their agreement—an express delegation
    clause and an incorporation of the AAA rules for consumer
    arbitrations—Attix and Carrington clearly and unmistakably
    agreed to submit questions of arbitrability to an arbitrator.
    We now consider Attix’s challenge to the scope of the
    parties’ delegation agreement. Attix does not dispute that, in both
    the express delegation clause and the incorporation of the AAA
    rules for consumer arbitrations, the parties agreed to delegate
    questions of arbitrability to an arbitrator. However, Attix argues
    that the delegation has limited scope, and that it does not apply to
    the arbitrability dispute in this case.
    Attix bases his challenge to the scope of the parties’
    delegation agreement on the language of the parties’ express
    delegation clause. That clause states, again, that “[t]he arbitrator
    shall also decide what is subject to arbitration unless prohibited by
    law.” Attix argues that we should read this provision as sending
    questions of arbitrability to an arbitrator, except for questions
    about whether arbitration of the parties’ claims is “prohibited by
    law.” The district court read the delegation clause the same way,
    taking the view that the clause “evince[d] a clear intent for the
    Court, not the arbitrator, to determine whether arbitration of any
    claims is ‘prohibited by law.’” In essence, Attix asserts that the
    parties’ delegation clause represents a “partial” delegation of most,
    USCA11 Case: 20-13575        Date Filed: 05/26/2022     Page: 26 of 52
    26                      Opinion of the Court                 20-13575
    but not all, questions of arbitrability to an arbitrator—and,
    critically, that it does not delegate the arbitrability dispute in this
    case, namely whether the Dodd-Frank Act prohibits enforcement
    of the parties’ agreement to arbitrate Attix’s claims.
    To understand Attix’s “partial delegation” interpretation of
    the parties’ delegation clause, some background on the different
    types of arbitrability issues is in order. Arbitrability issues involve
    “fundamental questions that will determine whether a claim will
    be brought before an arbitrator.” JPay, 904 F.3d at 930. However,
    questions of arbitrability do not come in only one shape. There are
    a few basic kinds. Some arbitrability questions are about the
    “scope” or “applicability” of the parties’ arbitration agreement—
    i.e., what set of disputes the arbitration agreement covers, and
    whether it governs the particular dispute at hand. See, e.g., Henry
    Schein, 
    139 S. Ct. at 528
     (discussing an arbitrability dispute about
    whether an agreement to arbitrate claims, “except for actions
    seeking injunctive relief,” required arbitration of the plaintiff’s
    claims seeking injunctive relief “only in part”); Princess Cruise
    Lines, 
    657 F.3d at
    1213–15, 1219–21 (analyzing whether a former
    cruise line employee’s tort and maritime claims “f[e]ll within the
    scope of the arbitration provision”). Other arbitrability questions
    are about the “validity” or “enforceability” of an arbitration
    agreement—i.e., whether the parties have entered into a legally
    USCA11 Case: 20-13575             Date Filed: 05/26/2022         Page: 27 of 52
    20-13575                    Opinion of the Court                                27
    operative arbitration agreement that is enforceable under law. 9
    See, e.g., Caley v. Gulfstream Aerospace Corp., 
    428 F.3d 1359
    ,
    1367–68, 1377–79 (11th Cir. 2005) (analyzing whether an
    arbitration agreement was unconscionable, and therefore
    unenforceable, under Georgia contract law); Gilmer v.
    Interstate/Johnson Lane Corp., 
    500 U.S. 20
    , 27–35 (1991)
    (considering whether the Age Discrimination in Employment Act
    (ADEA) prohibited enforcement of an agreement to arbitrate the
    plaintiff’s age-discrimination claims). Everyone agrees that the
    arbitrability dispute in this case—whether the Dodd-Frank Act
    9
    Although we need not delve deeply into the distinction between the validity
    and enforceability of an arbitration agreement in this appeal, we note that
    there appears to be a subtle, but material, distinction between the two
    concepts. Validity, the Supreme Court has indicated, is about “what it takes
    to enter into” a legally operative arbitration agreement. Kindred Nursing Ctrs.
    Ltd. P’ship v. Clark, 
    137 S. Ct. 1421
    , 1428 (2017); see also 
    id.
     (noting that
    “duress” issues, which “involve[] unfair dealing at the contract formation
    stage,” relate to an arbitration agreement’s “initial validity” (quotations
    omitted and alteration adopted)). And enforceability is about whether the law
    allows for the enforcement of a validly formed arbitration agreement. See 
    id.
    (contrasting rules “finding arbitration contracts invalid because improperly
    formed” and rules “refusing to enforce those agreements once properly
    made”).
    We leave an in-depth examination of the differences between validity and
    enforceability for another day. Whatever the precise demarcation may be,
    there is no dispute that the arbitrability issue in this case is about
    enforceability. On appeal, Attix does not challenge the district court’s finding
    that, in the Speedpay terms and conditions, Attix and Carrington entered into
    a valid agreement to arbitrate his claims. Instead, Attix asserts that the parties’
    agreement to arbitrate his claims is unenforceable under the Dodd-Frank Act.
    USCA11 Case: 20-13575            Date Filed: 05/26/2022          Page: 28 of 52
    28                         Opinion of the Court                        20-13575
    prohibits enforcement of the parties’ agreement to arbitrate Attix’s
    claims—is a question about the “enforceability” of the parties’
    arbitration agreement.10
    With this understanding of the basic types of arbitrability
    issues in mind, we return to Attix’s challenge to the scope of the
    parties’ delegation agreement. Attix interprets the parties’ express
    delegation clause to provide for a “partial” delegation of questions
    of arbitrability. In Attix’s reading, the delegation clause has two
    main parts: an initial phrase delegating questions of arbitrability to
    an arbitrator, and a qualifying phrase limiting that delegation’s
    scope. First, the initial phrase: “The arbitrator shall also decide
    what is subject to arbitration.” On its face, this phrase would
    appear to commit any and all questions of arbitrability to an
    arbitrator’s review. Attix does not assert that it does not, at least in
    isolation. Instead, Attix argues that the second part of the
    delegation clause—“unless prohibited by law”—qualifies the scope
    of the first part’s delegation, pulling certain arbitrability issues back
    into the court’s purview.
    10
    The types of arbitrability questions we have identified do not represent an
    exhaustive list. For example, the availability of class proceedings in arbitration
    is yet another type of threshold arbitrability issue. See JPay, 904 F.3d at 927
    (stating that “the availability of class arbitration” is “the kind of gateway
    question that determines the type of dispute that will be arbitrated”). We
    intend only to set out the major distinctions among types of arbitrability
    questions as applicable to this appeal.
    USCA11 Case: 20-13575       Date Filed: 05/26/2022    Page: 29 of 52
    20-13575               Opinion of the Court                       29
    And how exactly does Attix think that the second part of the
    delegation clause qualifies the delegation? By reserving, he says,
    questions about whether the arbitration of his claims is “prohibited
    by law”—in other words, questions about whether the parties’
    agreement to arbitrate his claims is unenforceable—for judicial
    review. Under Attix’s reading of the delegation clause, threshold
    issues about the scope of the parties’ agreement to arbitrate his
    claims, or about whether that agreement applies to a particular
    dispute, would presumably go to an arbitrator, under the first part
    of the clause providing that an “arbitrator shall also decide what is
    subject to arbitration.” But threshold issues about whether the
    parties’ arbitration agreement is enforceable would be allocated to
    judicial review, under the “unless prohibited by law” language in
    the second part of the clause. Thus, Attix asks the Court to
    conclude that most questions of arbitrability are delegated under
    the delegation clause, but any arbitrability dispute of the form
    “Law X makes the arbitration agreement unenforceable” is a
    question for the court.
    Were we to adopt Attix’s reading of the parties’ delegation
    clause, we agree with Attix about what would follow: the
    delegation clause would function as a “partial” delegation sending
    most questions of arbitrability to an arbitrator, but not questions
    about enforceability, such as the parties’ dispute about whether the
    Dodd-Frank Act renders their agreement to arbitrate Attix’s claims
    unenforceable. That dispute would be for the court to decide.
    USCA11 Case: 20-13575       Date Filed: 05/26/2022    Page: 30 of 52
    30                     Opinion of the Court                20-13575
    However, we do not adopt Attix’s reading of the delegation
    clause. The plain and natural reading of the clause is that all
    questions of arbitrability are delegated to an arbitrator—including
    questions about whether the parties’ arbitration agreement is
    enforceable—unless the law prohibits the delegation of threshold
    arbitrability issues itself. See EEOC v. Waffle House, Inc., 
    534 U.S. 279
    , 294 (2002) (noting that, when interpreting an arbitration
    agreement, we rely on “the plain text of the contract”). Unlike
    Attix, we do not interpret the parties’ delegation clause as carving
    out certain arbitrability issues from the arbitrator’s domain. When
    it directs that an “arbitrator shall also decide what is subject to
    arbitration,” we find that the delegation clause sends all questions
    of arbitrability to an arbitrator without limitation. And what about
    the clause’s “unless prohibited by law” language? That phrase
    imposes an unremarkable condition on the parties’ otherwise-
    unqualified agreement to delegate questions of arbitrability: i.e.,
    simply that delegation will not occur if the law says it cannot.
    This plain and natural reading of the parties’ delegation
    clause—that all questions of arbitrability are delegated to an
    arbitrator, unless the law prohibits that delegation—aligns with
    ordinary rules of grammar. See Niz-Chavez v. Garland, 
    141 S. Ct. 1474
    , 1482 (2021) (“[W]hen it comes to discerning the ordinary
    meaning of words, there are perhaps few better places to start than
    rules governing their usage.”). Consider the word “unless” in the
    delegation clause—which, again for reference, states that “[t]he
    arbitrator shall also decide what is subject to arbitration unless
    USCA11 Case: 20-13575       Date Filed: 05/26/2022     Page: 31 of 52
    20-13575               Opinion of the Court                        31
    prohibited by law.” “Unless” is a subordinating conjunction. See
    The Chicago Manual of Style ¶ 5.201 (17th ed. 2017). “A
    subordinating conjunction connects clauses of unequal
    grammatical rank,” “introduc[ing] a clause that is dependent on the
    independent clause.” 
    Id. ¶ 5
    .200. The application of this basic rule
    to the delegation clause is commonplace and clear. In the parties’
    delegation clause, the independent clause is the complete sentence
    preceding the conjunction: “The arbitrator shall also decide what
    is subject to arbitration.” The dependent clause is the fragment
    following the conjunction: “prohibited by law.” And the
    conjunction connects the two, indicating that the event the first
    clause describes—the delegation of questions of arbitrability to an
    arbitrator—will occur “unless” the law prohibits it.
    Attix’s reading of the delegation clause, on the other hand—
    that questions of arbitrability are delegated to an arbitrator, unless
    the law prohibits arbitration of the parties’ claims —is strained,
    odd, and contrary to the rules of grammar. Under Attix’s reading
    of the delegation clause, “unless” would, it appears, connect the
    dependent phrase “prohibited by law” to only a single isolated
    word on the other side of the conjunction, “arbitration,” chopping
    that word off from the rest of the clause in which it appears.
    Grammatically, that reading makes no sense. Thus, to make his
    interpretation of the delegation clause work, Attix has to subtly add
    extra words to it, so that, rather than provide that an “arbitrator
    shall also decide what is subject to arbitration unless prohibited by
    law,” it would provide that an “arbitrator shall also decide what is
    USCA11 Case: 20-13575           Date Filed: 05/26/2022         Page: 32 of 52
    32                         Opinion of the Court                      20-13575
    subject to arbitration unless arbitration is prohibited by law.” But
    there is, of course, a much simpler way to make the delegation
    clause mean what Attix wants it to mean: by actually adding the
    words to the contract. If the parties had intended for an arbitrator
    to decide “what is subject to arbitration unless arbitration is
    prohibited by law,” the delegation clause presumably would have
    simply said exactly that. Without the extra words, the clear and
    unmistakable meaning of the clause is the one we have laid out: all
    questions of arbitrability are delegated to an arbitrator, as long as
    the law does not prohibit the delegation of threshold arbitrability
    issues. 11
    Finally, we note that Attix’s “partial delegation”
    interpretation of the parties’ agreement, aside from being
    unnatural and contrary to the rules of grammar, conflicts with how
    11
    Attix argues that, because there are two competing readings of the
    delegation clause, the clause is therefore ambiguous, and we should resolve
    the ambiguity in his favor. Because we require “clear and unmistakable
    evidence” that “the parties agreed to arbitrate arbitrability,” First Options of
    Chicago, 
    514 U.S. at
    944–45, if the parties’ delegation clause were ambiguous,
    we would “presume that a court w[ould] decide arbitrability.” JPay, 904 F.3d
    at 930.
    But we find no ambiguity in the parties’ delegation clause. “A contract term
    is ambiguous if reasonably susceptible to more than one interpretation.”
    Orkin Exterminating Co., Inc. v. FTC, 
    849 F.2d 1354
    , 1360 (11th Cir. 1988)
    (quotation omitted). While Attix may interpret the delegation clause
    differently than we have, his reading is not reasonable. By its plain terms, the
    delegation clause commits all questions of arbitrability to an arbitrator’s
    review.
    USCA11 Case: 20-13575        Date Filed: 05/26/2022     Page: 33 of 52
    20-13575                Opinion of the Court                        33
    delegation agreements typically work. We have noted that
    questions of arbitrability “are typically delegated or preserved as a
    group,” and that both the Supreme Court and this Court have
    “spoken of questions of arbitrability as a unitary category.” JPay,
    904 F.3d at 943. We have not, to our knowledge, ever seen a
    “partial” delegation agreement in the wild. Nor does Attix say that
    he has, or cite any examples. That is not to say, of course, that a
    “partial” delegation agreement could not exist. Parties may
    structure their arbitration agreements as they like. See Lamps Plus,
    Inc. v. Varela, 
    139 S. Ct. 1407
    , 1416 (2019) (noting that “[p]arties
    may generally shape [arbitration] agreements to their liking by
    specifying,” among other things, “the issues subject to
    arbitration”). If parties wish to structure their contracts to delegate
    some questions of arbitrability to an arbitrator but not others, they
    are free to do so. But the parties in this case did not. This appeal
    involves a garden-variety delegation agreement committing all
    questions of arbitrability to an arbitrator’s review. Thus, the
    arbitrability dispute in this case—i.e., whether the parties’
    agreement to arbitrate Attix’s claims is enforceable under the
    Dodd-Frank Act—is a question for the arbitrator.
    B. Attix Has Not Specifically Challenged the
    Enforceability of the Delegation Agreement
    We next consider whether Attix has specifically challenged
    the enforceability of the parties’ delegation agreement. We find
    that he has not. When, as here, a contract contains a delegation
    agreement, challenges to the validity or enforceability of the
    USCA11 Case: 20-13575       Date Filed: 05/26/2022    Page: 34 of 52
    34                     Opinion of the Court                20-13575
    parties’ separate agreement to arbitrate the merits of their claims
    are committed to an arbitrator’s review. Thus, to overcome a
    delegation agreement, a party must challenge the validity or
    enforceability of the parties’ precise agreement to arbitrate
    threshold arbitrability issues. Attix claims that he has specifically
    challenged the parties’ delegation agreement. In his statutory
    challenge based on the Dodd-Frank Act, however, Attix disputes
    only the enforceability of the parties’ agreement to arbitrate his
    claims arising from his use of Speedpay’s service. And the
    enforceability of that agreement is, under the parties’ separate
    delegation agreement, a threshold issue for an arbitrator to decide.
    We begin by setting out the legal principles governing the
    interplay between what we will call “primary” arbitration
    agreements—i.e., agreements to arbitrate the merits of claims
    arising from a contract—and delegation agreements. Recall that
    § 2 of the FAA says written arbitration agreements “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
    .
    Under § 2, a party may challenge an arbitration agreement’s
    validity or enforceability based on “generally applicable contract
    defenses, such as fraud, duress, or unconscionability.” Rent-A-
    Center, 
    561 U.S. at 68
     (quotation omitted). Or, a party may
    challenge an arbitration agreement’s enforceability by asserting
    that a federal statute outside the FAA precludes arbitration. See,
    e.g., Gilmer, 
    500 U.S. at
    27–35 (considering a challenge to the
    enforceability of an arbitration agreement under the ADEA); Epic
    USCA11 Case: 20-13575      Date Filed: 05/26/2022     Page: 35 of 52
    20-13575               Opinion of the Court                      35
    Sys. Corp. v. Lewis, 
    138 S. Ct. 1612
    , 1623–27 (2018) (evaluating
    whether the National Labor Relations Act prohibited enforcement
    of class action waivers in certain arbitration agreements); see also
    CompuCredit Corp. v. Greenwood, 
    565 U.S. 95
    , 98 (2012) (noting
    that “the FAA’s mandate” may be “overridden by a contrary
    congressional command” (quotation omitted)). When the parties’
    contract includes no delegation agreement, the operation of these
    rules is fairly straightforward: the court simply decides whether
    there is either a generally applicable contract defense or a federal
    statute outside the FAA that makes the parties’ agreement to
    arbitrate their claims invalid or unenforceable. See, e.g., Bess v.
    Check Express, 
    294 F.3d 1298
    , 1306–09 (11th Cir. 2002) (analyzing
    whether an arbitration agreement was unconscionable, and
    therefore unenforceable, under Alabama law).
    When the parties’ contract includes a delegation agreement,
    the situation is different. A delegation agreement commits
    questions of arbitrability to an arbitrator’s review, including
    questions about the validity or enforceability of the parties’
    primary arbitration agreement. See, e.g., JPay, 904 F.3d at 942–43
    (noting that, by incorporating the AAA’s delegation rules into their
    agreement, parties thereby agreed to arbitrate questions about the
    validity or enforceability of their agreement to arbitrate their
    claims (citing Terminix, 
    432 F.3d at 1329
    )). Courts enforce
    agreements to arbitrate the validity or enforceability of primary
    arbitration agreements as a matter of common contractual sense.
    “[W]here the parties have unambiguously agreed to arbitrate
    USCA11 Case: 20-13575        Date Filed: 05/26/2022     Page: 36 of 52
    36                      Opinion of the Court                 20-13575
    gateway questions, they are entitled to have the arbitrator resolve
    those questions.” Jones, 866 F.3d at 1270–71.
    But, there is another wrinkle. An agreement to arbitrate
    questions about the validity or enforceability of a primary
    arbitration agreement is itself an arbitration agreement. See Rent-
    A-Center, 
    561 U.S. at 69
     (noting that a delegation agreement “is
    simply an additional, antecedent agreement . . . and the FAA
    operates on this additional arbitration agreement just as it does on
    any other”). It is an agreement to arbitrate the arbitrability of the
    parties’ claims, nested within another agreement to arbitrate the
    merits of those claims. See Henry Schein, 
    139 S. Ct. at 529
    . For the
    purpose of assessing its validity or enforceability, a delegation
    agreement is “severable” from the primary arbitration agreement
    in which it is contained. See New Prime, 
    139 S. Ct. at 538
     (stating
    that, “under the severability principle, we treat a challenge to the
    validity of . . . a delegation clause . . . separately from a challenge
    to the validity of the entire contract in which it appears”); see also
    Parm v. Nat’l Bank of Cal., N.A., 
    835 F.3d 1331
    , 1334 (11th Cir.
    2016) (“Delegation clauses are severable from the underlying
    agreement to arbitrate.”). And while, under the delegation
    agreement, challenges to the primary arbitration agreement’s
    validity or enforceability are off-limits to the courts, see JPay, 904
    F.3d at 942–43, a court must always consider a validity or
    enforceability challenge that is “specific” to the delegation
    agreement before enforcing it. See Rent-A-Center, 
    561 U.S. at
    70–
    71 (noting that “a party’s challenge to another provision of the
    USCA11 Case: 20-13575        Date Filed: 05/26/2022      Page: 37 of 52
    20-13575                Opinion of the Court                         37
    contract, or to the contract as a whole, does not prevent a court
    from enforcing a specific agreement to arbitrate” threshold
    arbitrability issues, but that, “[i]f a party challenges the validity
    under § 2 [of the FAA] of the precise [delegation] agreement . . . the
    federal court must consider the challenge before ordering
    compliance with that agreement”).
    Thus, in line with the Supreme Court’s precedents, we have
    stated the following rule:
    [W]here an arbitration agreement contains a
    delegation provision—committing to the arbitrator
    the threshold determination of whether the
    agreement to arbitrate is enforceable—the courts
    only retain jurisdiction to review a challenge to that
    specific provision.
    Parnell v. CashCall, Inc., 
    804 F.3d 1142
    , 1144 (11th Cir. 2015); see
    also Parm, 835 F.3d at 1334–35 (noting that, when an arbitration
    agreement “contains a delegation clause, our review is limited, at
    least initially, to . . . direct challenges to that clause”). Under this
    rule, if a party successfully challenges the validity or enforceability
    of a delegation agreement, the court should proceed to resolve any
    challenges to the validity or enforceability of the parties’ primary
    arbitration agreement, per the default rule assigning threshold
    arbitrability issues to the court’s review. See Parm, 835 F.3d at 1335
    (noting that, “if we determine that the delegation clause is itself
    invalid or unenforceable,” we “may . . . review the enforceability
    of the arbitration agreement as a whole”); U.S. Nutraceuticals, 769
    USCA11 Case: 20-13575       Date Filed: 05/26/2022    Page: 38 of 52
    38                     Opinion of the Court                20-13575
    F.3d at 1311 (“[O]rdinarily, the question of arbitrability is
    undeniably an issue for judicial determination.” (quotation omitted
    and alteration adopted)). But if the court finds that the challenge
    to the validity or enforceability of the delegation agreement lacks
    merit—or if no such challenge is made—the court must enforce the
    delegation agreement and send any challenges to the validity or
    enforceability of the primary arbitration agreement to the
    arbitrator. See Parnell, 804 F.3d at 1146–47 (“[A]bsent a challenge
    to the delegation provision itself, the federal courts must treat the
    delegation provision as valid under § 2, and must enforce it under
    §§ 3 and 4, leaving any challenge to the validity of the [a]greement
    as a whole for the arbitrator.” (quotation omitted)).
    Further, before deciding a challenge to the validity or
    enforceability of a delegation agreement, we should ensure that the
    challenge asserted really is about the delegation agreement.
    Otherwise, we risk trampling on the parties’ agreement to arbitrate
    the validity or enforceability of the other parts of the contract.
    Accordingly, “[w]e may examine a challenge to a delegation
    provision only if the claimant challenged the delegation provision
    directly.” Jones, 866 F.3d at 1264 (quotation omitted); see also
    Parnell, 804 F.3d at 1146 (“[T]he plaintiff must challenge the
    delegation provision specifically.” (quotation, alteration, and
    emphasis omitted)). And to “directly” or “specifically” challenge
    the validity or enforceability of a delegation agreement, it is not
    sufficient for a party to merely say the words, “I am challenging the
    delegation agreement.” Challenging a delegation agreement is a
    USCA11 Case: 20-13575       Date Filed: 05/26/2022    Page: 39 of 52
    20-13575               Opinion of the Court                       39
    matter of substance, not form. A party specifically challenges the
    validity or enforceability of a delegation agreement if, and only if,
    the substantive nature of the party’s challenge meaningfully goes
    to the parties’ precise agreement to delegate threshold arbitrability
    issues. See Rent-A-Center, 
    561 U.S. at
    71–72 (stating that “the basis
    of [a plaintiff’s] challenge” to a delegation agreement must “be
    directed specifically” at the delegation agreement “before the court
    will intervene”); see also 
    id. at 74
     (petitioner did not directly
    challenge a delegation agreement where he “did not make any
    arguments specific to the delegation provision” (emphasis added));
    Jones, 866 F.3d at 1265 (plaintiff “did not directly challenge the
    delegation provision” where he “d[id] not offer any details about
    why the delegation provision itself, apart from the agreement as a
    whole,” was invalid or unenforceable, and where “the heart of his
    argumentation was directed at the agreement as a whole”); Parnell,
    804 F.3d at 1146 (plaintiff did not directly challenge a delegation
    agreement where “he did not articulate a challenge to the
    delegation provision specifically” (emphasis added)).
    And how, in practice, does a challenge to the validity or
    enforceability of a delegation agreement differ from a challenge
    only to the validity or enforceability of a primary arbitration
    agreement? Some examples may help to sharpen the distinction.
    Rent-A-Center, 
    561 U.S. 63
    , involved a challenge only to the
    validity or enforceability of a primary arbitration agreement. In
    Rent-A-Center, the plaintiff, Jackson, asserted discrimination
    claims against his former employer. 
    Id. at 65
    . Jackson had executed
    USCA11 Case: 20-13575      Date Filed: 05/26/2022     Page: 40 of 52
    40                     Opinion of the Court               20-13575
    an arbitration agreement requiring arbitration of claims “arising
    out of” his employment with Rent-A-Center, including “claims for
    discrimination.” 
    Id.
     The arbitration agreement included a
    delegation clause stating that an arbitrator “shall have exclusive
    authority to resolve any dispute relating to the interpretation,
    applicability, enforceability or formation” of the arbitration
    agreement. 
    Id. at 66
    .
    After Jackson filed suit, Rent-A-Center moved to compel
    arbitration. 
    Id.
     at 65–66. Jackson opposed arbitration, arguing that
    the parties’ arbitration agreement was unconscionable, and
    therefore unenforceable, under Nevada law. 
    Id. at 66
    . Jackson’s
    unconscionability arguments were directed at two specific
    provisions of the parties’ arbitration agreement: a provision
    requiring the parties to share the costs of arbitration, and a
    provision limiting the discovery available to the parties in
    arbitration. See 
    id. at 74
    . Jackson argued that it would be
    unconscionable to require him to arbitrate his discrimination
    claims against Rent-A-Center under those conditions. See 
    id.
    The Supreme Court held that Jackson’s unconscionability
    challenge went to the enforceability of the parties’ arbitration
    agreement as a whole—but not specifically to the enforceability of
    the delegation clause—and that an arbitrator should therefore
    decide the unconscionability issue. See 
    id.
     at 72–75. The Court
    noted that Jackson’s specific unconscionability argument was that
    the arbitration agreement’s cost-sharing and discovery-limiting
    procedures would result in an unfair arbitration of his
    USCA11 Case: 20-13575       Date Filed: 05/26/2022    Page: 41 of 52
    20-13575               Opinion of the Court                       41
    discrimination claims, and that the “entire Agreement” was
    therefore “invalid.” See 
    id. at 74
     (emphasis in original). However,
    Jackson did not specifically assert that the threshold arbitration of
    his arbitrability challenge would be unfair as a result of those
    procedures. See 
    id.
     (noting that Jackson had not “argue[d] that
    these common procedures as applied to the delegation provision
    rendered that provision unconscionable” (emphasis in original)).
    Because the substance of Jackson’s unconscionability challenge was
    not “specific to the delegation provision,” the Court enforced the
    delegation provision as written. See 
    id. at 72, 74
    .
    By contrast, Parm, 
    835 F.3d 1331
    , involved a specific
    challenge to the validity or enforceability of a delegation
    agreement. In Parm, the plaintiff asserted claims against National
    Bank of California (NBCal), a financial service provider of payday
    lender Western Sky, relating to allegedly illegal payday loan
    agreements between Western Sky and its borrowers. 
    Id.
     at 1332–
    33. Parm’s claims arose from her payday loan contract with
    Western Sky, in which she agreed to arbitrate “any controversy or
    claim between” Parm and Western Sky or its service providers. See
    
    id. at 1333
    . The arbitration agreement in the loan contract
    provided, with some inapplicable exceptions, that “any Dispute . . .
    will be resolved by Arbitration, which shall be conducted by the
    Cheyenne River Sioux Tribal Nation by an authorized
    representative in accordance with its consumer dispute rules.” 
    Id.
    It included a delegation agreement in which Parm agreed to
    USCA11 Case: 20-13575        Date Filed: 05/26/2022     Page: 42 of 52
    42                      Opinion of the Court                 20-13575
    arbitrate “any issue concerning the validity, enforceability, or scope
    of this loan or the Arbitration agreement.” 
    Id.
    After Parm filed suit, NBCal moved to compel arbitration.
    
    Id. at 1334
    . Parm opposed arbitration, arguing that both her
    agreement to arbitrate her claims arising from her loan contract
    with Western Sky and her agreement to arbitrate threshold
    questions about the arbitrability of those claims were
    unenforceable because the arbitral forum provided for in the loan
    contract was illusory. See 
    id.
     In particular, Parm argued that the
    Cheyenne River Sioux Tribal Nation does not arbitrate disputes
    and has no arbitration rules or procedures, and thus that there was
    no actual arbitral forum before which the parties could arbitrate
    any dispute. See 
    id.
    On appeal, we found that Parm had specifically challenged
    the enforceability of the loan contract’s delegation agreement. See
    
    id.
     at 1334–35. Parm’s challenge to the enforceability of the
    delegation agreement was simple and direct: because the parties’
    chosen arbitral forum did not exist, there was no one to whom the
    parties could delegate their threshold arbitrability issues. See 
    id. at 1335
     (discussing Parm’s “contention . . . that the delegation clause
    is unenforceable because the arbitration agreement provides no
    available forum for an arbitrator to decide threshold issues of
    arbitrability”). Turning to the merits of Parm’s challenge to the
    enforceability of the delegation agreement, we found that the
    Cheyenne River Sioux Tribal Nation was indeed an illusory arbitral
    forum and that the delegation agreement therefore could not be
    USCA11 Case: 20-13575            Date Filed: 05/26/2022          Page: 43 of 52
    20-13575                   Opinion of the Court                                43
    enforced. 12 See 
    id.
     at 1335–37. We then upheld Parm’s challenge
    to the enforceability of the loan contract’s primary arbitration
    agreement on similar grounds, finding that, given the illusory
    arbitral forum, Parm’s agreement to arbitrate her claims could not
    be enforced either. See 
    id. at 1338
    .
    Returning to the case at hand, to save this case from going
    to arbitration, Attix must raise a specific challenge to the validity or
    enforceability of the parties’ delegation agreement. See Rent-A-
    Center, 
    561 U.S. at 72
     (stating that, “unless [the plaintiff has]
    challenged the delegation provision specifically, we must treat it as
    valid under § 2, and must enforce it under §§ 3 and 4”). Attix has
    not done so. The parties’ delegation agreement says an arbitrator
    should decide questions of arbitrability, and Attix cites no law that
    would prohibit an arbitrator from doing so. Attix argues that his
    statutory challenge based on the Dodd-Frank Act is “specific” to
    the parties’ delegation agreement. But it is not. Attix’s statutory
    challenge is only about whether the parties’ primary arbitration
    agreement—i.e., their agreement to arbitrate his claims—is
    12
    In reaching this conclusion, we noted in Parm that § 5 of the FAA typically
    allows the court to “appoint a substitute in the event there is a lapse or failure
    of the named [arbitral] forum” in the parties’ contract. 835 F.3d at 1337; see
    also 
    9 U.S.C. § 5
    . But, because the parties’ “‘choice of forum [was] an integral
    part of the agreement to arbitrate,’” we held, in keeping with our prior
    precedents, that the “‘failure of the chosen forum preclude[d] arbitration’”
    altogether. Parm, 835 F.3d at 1337 (quoting Inetianbor v. CashCall, Inc., 
    768 F.3d 1346
    , 1350 (11th Cir. 2014)).
    USCA11 Case: 20-13575        Date Filed: 05/26/2022     Page: 44 of 52
    44                      Opinion of the Court                 20-13575
    enforceable. Under the parties’ delegation agreement, that issue is
    committed to an arbitrator’s review.
    To understand why Attix’s Dodd-Frank Act challenge is only
    about whether the parties’ primary arbitration agreement is
    enforceable, not whether the parties’ delegation agreement is
    enforceable, we must understand the nature of the challenge. Attix
    bases his Dodd-Frank Act challenge on 15 U.S.C. § 1639c(e)(3),
    which states:
    No provision of any residential mortgage loan or of
    any extension of credit under an open end consumer
    credit plan secured by the principal dwelling of the
    consumer, and no other agreement between the
    consumer and the creditor relating to the residential
    mortgage loan or extension of credit referred to in
    paragraph (1), shall be applied or interpreted so as to
    bar a consumer from bringing an action in an
    appropriate district court of the United States, or any
    other court of competent jurisdiction, pursuant to
    section 1640 of this title or any other provision of law,
    for damages or other relief in connection with any
    alleged violation of this section, any other provision
    of this subchapter, or any other Federal law.
    15 U.S.C. § 1639c(e)(3) (emphases added).
    Attix’s Dodd-Frank Act challenge has two parts. The first
    part is about the types of agreements that fall within § 1639c(e)(3)’s
    purview. Section 1639c(e)(3) governs several types of agreements,
    including an “agreement between [a] consumer and [a] creditor
    USCA11 Case: 20-13575       Date Filed: 05/26/2022     Page: 45 of 52
    20-13575               Opinion of the Court                        45
    relating to [a] residential mortgage loan.” Attix argues that the
    Speedpay terms and conditions are one such mortgage-related
    agreement between a consumer and a creditor. In particular, Attix
    argues that, under the statute: (1) he is a “consumer”; (2)
    Carrington is a “creditor”; and (3) the terms and conditions
    governing his use of Speedpay’s service to pay his mortgage in May
    2020 “relate to” his residential mortgage loan.
    The second part of Attix’s Dodd-Frank Act challenge is
    about § 1639c(e)(3)’s protections against arbitration. Section
    1639c(e)(3) provides that a mortgage-related contract between a
    consumer and a creditor “shall [not] be applied or interpreted so as
    to bar a consumer from bringing an action in an appropriate district
    court of the United States . . . for damages or other relief in
    connection with any alleged violation of this section, any other
    provision of this subchapter, or any other Federal law.” Attix
    argues that, because his claims arise from the Speedpay terms and
    conditions, and because he has asserted a claim against Carrington
    under a “[f]ederal law,” i.e., the FDCPA, this provision guarantees
    him the right to bring his claims against Carrington in federal court.
    Therefore, Attix says, the statute renders his agreement to arbitrate
    his claims unenforceable, because to enforce the arbitration
    agreement would be to “interpret” and “apply” the Speedpay terms
    USCA11 Case: 20-13575            Date Filed: 05/26/2022          Page: 46 of 52
    46                         Opinion of the Court                        20-13575
    and conditions “so as to bar” him from pursuing his claims in
    court.13
    Attix’s Dodd-Frank Act challenge is, without doubt, about
    the enforceability of the parties’ primary arbitration agreement—
    i.e., their agreement that “any dispute arising from or relating to
    Service or your Payment(s) shall be resolved by mandatory and
    binding arbitration.” Indeed, in his brief, Attix describes his Dodd-
    Frank Act challenge by reference to the parties’ agreement to
    arbitrate his claims, stating, for example, that “the Dodd-Frank Act
    prohibits arbitration of plaintiff’s claims relating to plaintiff’s
    mortgage,” and that “Section 1639c(e)(3) of the Dodd-Frank Act
    prohibits Carrington . . . from compelling arbitration of . . . causes
    of action relating to Plaintiff’s residential mortgage loan.” These
    descriptions are correct. By arguing that § 1639c(e)(3) gives him
    the right to prosecute his claims against Carrington in federal court,
    Attix is disputing the enforceability of the parties’ primary
    arbitration agreement.
    13
    In response to Attix’s Dodd-Frank Act challenge, Carrington does not
    dispute that § 1639c(e)(3) protects against the arbitration of claims arising from
    certain agreements. Rather, Carrington argues that the Speedpay terms and
    conditions fall outside of § 1639c(e)(3)’s ambit altogether. In particular,
    Carrington argues that, under the statute: (1) it is not a “creditor”; and (2) the
    Speedpay terms and conditions do not “relate to” Attix’s residential mortgage
    loan. Thus, Carrington argues, its agreement with Attix is not an “agreement
    between [a] consumer and [a] creditor relating to [a] residential mortgage
    loan” to which § 1639c(e)(3)’s protections against arbitration would apply.
    USCA11 Case: 20-13575        Date Filed: 05/26/2022     Page: 47 of 52
    20-13575                Opinion of the Court                        47
    Attix’s Dodd-Frank Act challenge is not, however, about the
    enforceability of the parties’ delegation agreement. The parties’
    express delegation clause provides that an “arbitrator shall also
    decide what is subject to arbitration unless prohibited by law,” and
    the AAA rules the parties incorporated into their agreement
    provide that an “arbitrator shall have the power to rule on his or
    her own jurisdiction.” These provisions commit threshold
    arbitrability issues to an arbitrator’s review. The parties have a live
    threshold dispute: whether their agreement to arbitrate Attix’s
    claims falls within the scope of § 1639c(e)(3)’s protections against
    arbitration. And—this is the critical part—Attix does not explain
    how § 1639c(e)(3) bars an arbitrator from resolving that dispute.
    Although Attix asserts that the Speedpay terms and conditions fall
    within § 1639c(e)(3)’s purview, he points to no language in
    § 1639c(e)(3) that says a court, rather than an arbitrator, must
    decide whether he is right. See Parnell, 804 F.3d at 1149 (plaintiff
    did not specifically challenge a delegation agreement where “[a]t
    no point in his complaint [did he] specifically challenge the parties’
    agreement to commit to arbitration the question of the
    enforceability of the arbitration agreement” (emphasis in original)).
    By contract, the gateway question of arbitrability in this case is
    delegated to an arbitrator, and nothing in § 1639c(e)(3) divests the
    arbitrator of his or her power to decide that issue.
    Further, in unpacking why § 1639c(e)(3) does not bar the
    delegation of questions of arbitrability, one passage in the statute
    warrants particular attention: the prohibition against certain
    USCA11 Case: 20-13575       Date Filed: 05/26/2022    Page: 48 of 52
    48                     Opinion of the Court                20-13575
    mortgage-related agreements being “applied or interpreted so as to
    bar a consumer from bringing an action” in federal court. 15 U.S.C.
    § 1639c(e)(3). We read this language to provide that arbitration
    agreements in contracts that fall into a particular bucket—i.e., the
    “mortgage-related contracts between consumers and creditors”
    bucket—are unenforceable. We do not, however, read it to bar an
    arbitrator from deciding whether a given contract falls into that
    bucket to begin with. In other words, we do not read § 1639c(e)(3)
    to prohibit the enforcement of delegation agreements in any way.
    After all, how would one “appl[y]” or “interpret[]” a contract
    so as to “bar” an “action” in federal court? We think the answer is
    obvious: by enforcing an agreement to arbitrate claims arising from
    the contract. The parties’ delegation agreement, however—unlike
    their primary arbitration agreement—is not an agreement to
    arbitrate their claims. It is simply an agreement to have an
    arbitrator decide threshold issues of arbitrability. Whether
    § 1639c(e)(3) even applies to the parties’ contract at all is a
    quintessential arbitrability question. The parties have agreed that
    an arbitrator will decide that question, and nothing in § 1639c(e)(3)
    requires that a court decide the question instead.
    To sharpen the point even more, consider a contrasting
    hypothetical. Imagine that § 1639c(e)(3) said something like the
    following:
    No agreement between a consumer and a creditor
    relating to a residential mortgage loan shall be applied
    or interpreted so as to bar a consumer from bringing
    USCA11 Case: 20-13575           Date Filed: 05/26/2022         Page: 49 of 52
    20-13575                   Opinion of the Court                              49
    an action in an appropriate district court of the United
    States arising from that agreement and asserted under
    any Federal law. Any controversy regarding whether
    a particular contract constitutes an agreement falling
    within the scope of this subsection shall be
    determined by an appropriate district court of the
    United States.
    Under a provision like this, Attix would, or at least might, have a
    cognizable challenge to the enforceability of a delegation
    agreement committing threshold arbitrability issues—including
    whether a particular contract falls within § 1639c(e)(3)’s purview—
    to an arbitrator’s review. By providing that a federal court must
    determine “whether a particular contract constitutes an agreement
    falling within the scope” of the statute, this hypothetical provision
    would appear to prohibit an arbitrator from deciding that threshold
    issue. 14 But these are made-up words. They are not in the statute.
    The actual statute is silent as to who may decide whether a
    particular contract falls within the scope of its protections. And, of
    course, the parties’ agreement is not silent as to who should decide.
    Finally, Attix suggests that we have “jurisdiction” to
    consider his Dodd-Frank Act challenge because, in the district
    court, Attix asserted a different challenge to the validity or
    enforceability of the delegation agreement: i.e., that Carrington
    14
    To be clear, we are not suggesting that this pretend statute should or even
    could exist. We are not in the business of writing statutes, and disclaim any
    expertise in that art. We offer the example solely for purposes of illustration.
    USCA11 Case: 20-13575            Date Filed: 05/26/2022         Page: 50 of 52
    50                         Opinion of the Court                       20-13575
    was not a party to the Speedpay terms and conditions and therefore
    could not enforce the delegation agreement. The district court
    rejected this “Carrington was not a party” argument, and Attix has
    not raised it on appeal. Attix argues, however, that, because he
    made one argument that was “specific” to the delegation
    agreement below, we can consider other arguments he has made
    on appeal whether or not they relate specifically to the delegation
    agreement. That is not how this works. When a contract contains
    a delegation agreement, “we only retain jurisdiction to review a
    challenge to that particular provision.” Parnell, 804 F.3d at 1148. 15
    The fact that Attix made one argument in the district court that
    may have been specifically about the validity or enforceability of
    the parties’ delegation agreement does not open the door for us to
    consider other challenges that are not. See Parm, 835 F.3d at 1334–
    35 (when an arbitration agreement “contains a delegation clause,
    our review is limited” to “direct challenges to that clause”).
    Because Attix’s Dodd-Frank Act challenge is only about the
    enforceability of the parties’ primary arbitration agreement, under
    the parties’ delegation agreement, an arbitrator must resolve it.
    See Bodine v. Cook’s Pest Control Inc., 
    830 F.3d 1320
    , 1324 (11th
    Cir. 2016) (“When a delegation clause is properly raised by the
    15
    We note, as we have said before, that our reference to “jurisdiction” in
    Parnell was not a reference to “‘jurisdiction’ in its technical sense.” Bodine v.
    Cook’s Pest Control Inc., 
    830 F.3d 1320
    , 1324 n.3 (11th Cir. 2016). We meant
    only to “convey that whether the arbitration agreement was enforceable was
    a decision committed not to the court, but to the arbitrator.” 
    Id.
    USCA11 Case: 20-13575        Date Filed: 05/26/2022     Page: 51 of 52
    20-13575                Opinion of the Court                        51
    defendant and never specifically challenged by the plaintiff, the
    FAA directs the court to treat the clause as valid and compel
    arbitration.”). If the arbitrator decides that the Speedpay terms and
    conditions are an “agreement between [a] consumer and [a]
    creditor relating to [a] residential mortgage loan” under
    § 1639c(e)(3), and that § 1639c(e)(3) guarantees Attix a right to
    assert his claims arising from that agreement in federal court,
    Attix’s action will return to court for judicial determination of his
    claims. If the arbitrator determines that the Speedpay terms and
    conditions fall outside of § 1639c(e)(3)’s ambit, Attix’s action will
    proceed in arbitration, under the terms of the parties’ agreement.
    To be clear, we take no position whatsoever on the proper
    interpretation of any provision of § 1639c(e)(3), or its applicability,
    or lack thereof, to this case. We leave those determinations to an
    arbitrator, because that is what the parties have agreed.
    *    *    *
    As those keeping score at home will have already realized,
    here is what we do not decide in this appeal: We do not decide
    whether Attix’s claims have merit. Nor do we decide whether the
    parties must arbitrate Attix’s claims. Instead, we decide only who
    will decide whether the parties must arbitrate. Under the parties’
    agreement, the answer is, an arbitrator.
    At the end of the day, the “arbitrability of arbitrability” is
    simply about the freedom to decide who decides disputes. Federal
    law provides, emphatically, that parties may opt out of the judicial
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    system. One would be hard-pressed to find a topic about which
    the Supreme Court has provided more consistent clarity in recent
    years than arbitration. The Court’s precedents make clear that,
    when an appeal presents a delegation agreement and a question of
    arbitrability, we stop. We do not pass go. At some point in this
    litigation, someone may, perhaps, collect $200. Whether anyone
    will—and who will ultimately decide whether anyone does—are
    not questions we answer today.
    IV. Conclusion
    We REVERSE the denial of Carrington’s motion to compel
    arbitration and REMAND to the district court with instructions to
    compel arbitration and stay the proceedings in the district court.