Michelle Calderon v. Carrington Mortgage Services, LLC ( 2023 )


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  •                              In the
    United States Court of Appeals
    For the Seventh Circuit
    ____________________
    No. 22-1553
    UNITED STATES OF AMERICA ex rel.
    MICHELLE CALDERON,
    Plaintiff-Appellant,
    v.
    CARRINGTON MORTGAGE SERVICES, LLC,
    Defendant-Appellee.
    ____________________
    Appeal from the United States District Court for the
    Southern District of Indiana, Indianapolis Division.
    No. 1:16-cv-00920-RLY-MJD — Richard L. Young, Judge.
    ____________________
    ARGUED NOVEMBER 30, 2022 — DECIDED JUNE 14, 2023
    ____________________
    Before WOOD, JACKSON-AKIWUMI, and LEE, Circuit Judges.
    WOOD, Circuit Judge. Michelle Calderon sued Carrington
    Mortgage Services on behalf of the United States for alleged
    violations of the False Claims Act. Calderon is a former em-
    ployee of Carrington. She alleges that Carrington made false
    representations to the U.S. Department of Housing and Urban
    Development (HUD) in the course of certifying residential
    2                                                   No. 22-1553
    mortgage loans for insurance coverage from the Federal
    Housing Administration (FHA).
    Carrington moved for summary judgment on the basis
    that Calderon did not meet her evidentiary burden on two el-
    ements of False Claims Act liability. First, it asserted that she
    could not show that the allegedly false representations were
    material to HUD’s decisions to pay out various claims under
    the federal mortgage insurance program. Second, it con-
    tended that she could not show that the false representations
    caused HUD to suffer a monetary loss.
    The district court sided with Carrington on both elements
    and granted summary judgment, disposing of Calderon’s
    lawsuit. Though we conclude that Calderon does have suffi-
    cient proof of materiality, we agree that she has not met her
    burden of proof on the element of causation. We therefore af-
    firm the district court’s decision.
    I
    A
    Federal mortgage insurance is designed to create a path to
    homeownership for borrowers who might be considered too
    risky to qualify for a traditional mortgage because of their
    lack of savings, poor credit history, or low income. The Direct
    Endorsement Lender program is one through which HUD
    provides mortgage insurance to approved, private lenders.
    HUD covers the losses of private lenders in the event of a loan
    default to encourage the issuance of these higher risk mort-
    gages. Carrington has been a Direct Endorsement Lender for
    many years.
    If a potential Direct Endorsement Lender such as Carring-
    ton wishes to cover a loan with federal mortgage insurance, it
    No. 22-1553                                                         3
    must first submit to an underwriting process during which it
    assesses the prospective borrower’s eligibility for federal in-
    surance. HUD publishes handbooks that provide the under-
    writing guidelines for lenders and promulgates regulations
    that govern Direct Endorsement lending. 1 Carrington hires its
    own Direct Endorsement Underwriters and operates its own
    quality control system. Its goal is to ensure that it properly
    evaluates a borrower’s financial information, determines the
    degree of risk involved in issuing the loan, and complies with
    all federal requirements. After the lender approves the loan,
    the lender submits the loan to HUD for review and endorse-
    ment. Through this submission, the lender certifies to HUD
    that the borrower meets the minimum standards of HUD’s
    underwriting guidelines. HUD relies on these certifications to
    issue the necessary insurance coverage.
    Next, all loans submitted for federal insurance are subject
    to a pre-endorsement review by HUD. The parties dispute the
    scope of that review, but HUD’s own regulations indicate that
    the agency is focused on verifying that all necessary docu-
    ments are present, rather than on assuring the accuracy of the
    information it finds in the loan file. See HUD, 4155-2, Lender’s
    Guide to the Single Family Mortgage Insurance Process
    8.C.1.b (2010). Once a loan passes pre-endorsement review,
    HUD issues federal insurance to the lender for that loan. If a
    loan file is missing some of the required documentation, the
    lender instead receives a notice of return that specifies the
    1 See, e.g., HUD, 4155-1, Mortgage Credit Analysis for Mortgage In-
    surance, at https://www.hud.gov/sites/documents/41551HSGH.PDF
    (“HUD 4155-1”); HUD, 4155-2, Lender’s Guide to the Single Family Mort-
    gage    Insurance     Process,   at   https://www.hud.gov/sites/docu-
    ments/41552HSGH.PDF (“HUD 4155-2”).
    4                                                             No. 22-1553
    deficiencies and corrective action needed before the loan can
    be federally insured.
    HUD may conduct further examination, even after it is-
    sues the insurance for the lender. It subjects approximately 5
    percent of loans to a post-endorsement technical review in
    which it evaluates the loan using the federal underwriting re-
    quirements and confirms the accuracy of the information in
    the loan file. When a post-endorsement review reveals mate-
    rial noncompliance with HUD’s underwriting guidelines,
    HUD will require the lender to agree to an indemnification
    agreement, under which the lender must abstain from filing
    an insurance claim in the case of default or reimburse HUD if
    HUD makes a payment on an insurance claim for that mort-
    gage. Federal regulations define which violations may qualify
    as “serious and material.” 
    24 C.F.R. § 203.255
    (g)(3). 2
    2 Because materiality is central to this appeal, we furnish the full text
    of section 203.255(g)(3) here:
    (3) Serious and material violation. The mortgagee shall indemnify
    HUD for an FHA insurance claim paid within 5 years of mortgage in-
    surance endorsement, if the mortgagee knew or should have known
    of a serious and material violation of FHA origination requirements,
    such that the mortgage loan should not have been approved and en-
    dorsed by the mortgagee and irrespective of whether the violation
    caused the mortgage default. Such a serious and material violation of
    FHA requirements in the origination of the mortgage may occur if the
    mortgagee failed to, among other actions:
    (i) Verify the creditworthiness, income, and/or employment of the
    mortgagor in accordance with FHA requirements;
    (ii) Verify the assets brought by the mortgagor for payment of the
    required down payment and/or closing costs in accordance with FHA
    requirements; or
    No. 22-1553                                                              5
    B
    Calderon worked at Carrington from March 2013 to
    March 2015 as a Direct Endorsement Underwriter. During
    that time, HUD classified loans in one of four ways following
    a post-endorsement review: conforming, deficient, unac-
    ceptable, or mitigated. Deficient loans were those with docu-
    mentation deficiencies or processing errors that presented
    only low-risk issues. Unacceptable loans contained a high-
    risk error or omission and did not meet the basic eligibility
    requirements for federal mortgage insurance. Once a loan
    was deemed unacceptable, lenders had an opportunity to ex-
    plain or correct the identified deficiencies. If they were able to
    rectify the problem, the loan was reclassified as mitigated. If
    not, HUD issued an indemnification agreement.
    Concerned about what she was seeing on the job, includ-
    ing allegedly reckless and inappropriate underwriting prac-
    tices, Calderon brought this lawsuit against Carrington under
    the False Claims Act. See 
    31 U.S.C. § 3729
    . The Act allows a
    private party to sue for violations on behalf of the govern-
    ment; successful suits result in a payment to the initiator. 
    Id.
    § 3730. A plaintiff such as Calderon must plead and ulti-
    mately prove four elements: 1) the defendant made a false
    (iii) Address property deficiencies identified in the appraisal af-
    fecting the health and safety of the occupants or the structural integ-
    rity of the property in accordance with FHA requirements, or
    (iv) Ensure that the appraisal of the property serving as security
    for the mortgage loan satisfies FHA appraisal requirements, in accord-
    ance with § 203.5(e) [the regulation governing appraisals in the Direct
    Endorsement process].
    6                                                     No. 22-1553
    statement (falsity); 2) the defendant knew the statement was
    false (knowledge); 3) the false statement was material to the
    government’s payment decision (materiality); and 4) the false
    statement caused the government’s loss (causation). United
    States v. Molina Healthcare of Ill., Inc., 
    17 F.4th 732
    , 739–40 (7th
    Cir. 2021).
    Understanding the process by which federal mortgage in-
    surance is issued clarifies how a company such as Carrington
    might be held liable under the False Claims Act. The alleged
    false statements occur if Carrington wrongly certifies that a
    loan meets federal underwriting requirements. If HUD would
    have withheld federal insurance or issued an indemnification
    agreement had it known of the noncompliance, then the false
    certification of compliance is material to HUD’s payment de-
    cision. And if the loan defaults and HUD covers the cost of the
    default, then the false certification of compliance causes the
    government’s loss when the loan’s noncompliance is the fore-
    seeable cause of the default.
    C
    Calderon asserts that during her time at Carrington she
    observed “reckless and inappropriate underwriting practices
    at Carrington,” including the false certification of several
    loans as meeting HUD’s minimum underwriting guidelines.
    Essentially, she alleges, if HUD had known of the errors in
    Carrington’s loan files, it would not have endorsed those
    loans for federal insurance or, in the alternative, if all Carring-
    ton’s loans had been subjected to a full post-endorsement re-
    view, many of them would have been characterized as unac-
    ceptable and HUD would have issued indemnification agree-
    ments. Further, if Carrington had complied with HUD’s un-
    derwriting guidelines, fewer of its federally insured loans
    No. 22-1553                                                  7
    would have defaulted because only borrowers with appropri-
    ate risk levels would have received loans.
    To meet her evidentiary burden, Calderon provided a
    sample “re-underwrite” of 349 federally insured loans that
    Carrington issued between 2013 and 2015; all of those loans
    later defaulted. Calderon’s analysis identifies several alleged
    deficiencies in these loan files, to which we refer as the “re-
    viewed loans.” The flaws included instances where Carring-
    ton overstated the borrower’s income or provided insufficient
    documentation. Calderon also gives examples where the orig-
    inal underwriter improperly omitted borrower debt, failed to
    assess creditworthiness, permitted excessive debt-to-income
    ratios, or improperly assessed compensating factors—that is,
    borrower characteristics that can offset a bad credit score,
    such as documented cash reserves, no discretionary debt, sig-
    nificant additional income, or residual income.
    Calderon also offered herself as an expert and intended to
    testify about the shortcomings in Carrington’s quality control
    department, as well as about the elements of materiality and
    causation. But the district court excluded the bulk of her ex-
    pert opinion. After Calderon was precluded from testifying
    about certain aspects of materiality and causation, Carrington
    moved for summary judgment on just those elements, argu-
    ing that Calderon could not meet her evidentiary burden on
    the available record. The district court granted the motion,
    agreeing with Carrington that as a matter of law Calderon
    could not prove either materiality or causation. Calderon has
    appealed.
    8                                                    No. 22-1553
    II
    Calderon first challenges the district court’s decision un-
    der Federal Rule of Evidence 702 to exclude portions of her
    own proffered expert testimony. Calderon also disputes the
    district court’s decision to admit the testimony of Carring-
    ton’s expert, Kori Keith. We decide independently whether
    the district court followed Rule 702’s framework. United States
    v. Brown, 
    973 F.3d 667
    , 703 (7th Cir. 2020). We review the
    court’s decision to admit or exclude expert testimony for
    abuse of discretion. 
    Id.
    Federal Rule of Evidence 702 governs the admissibility of
    expert testimony and requires that the district court deter-
    mine that a witness is qualified as an expert by her
    “knowledge, skill, experience, training, or education.” Rule
    702 then sets out four factors to determine admissibility:
    (a) the expert’s scientific, technical, or other specialized
    knowledge will help the trier of fact to understand the ev-
    idence or to determine a fact in issue;
    (b) the testimony is based on sufficient facts or data;
    (c) the testimony is the product of reliable principles
    and methods; and
    (d) the expert has reliably applied the principles and
    methods to the facts of the case.
    The district court held that Calderon could not offer her
    opinion about the effectiveness of Carrington’s quality control
    program because she never worked in the quality control de-
    partment, did not review any manuals or procedures govern-
    ing that department, and did not compare Carrington’s qual-
    ity control processes to those required by HUD. In so ruling,
    the court probably overdid it by insisting that Calderon
    No. 22-1553                                                   9
    needed to have worked in Carrington’s own quality control
    department to develop the necessary expertise. Nonetheless,
    its overall criticisms of Calderon’s methods are sound. Given
    that Calderon did not read any of the materials that detailed
    Carrington’s policies and practices, she is not qualified to
    opine on their effectiveness. The court was well within its
    rights to exclude this portion of her proffered expert testi-
    mony.
    The district court also excluded the bulk of Calderon’s
    opinions on materiality and causation, finding them “too
    speculative.” It reasoned that because Calderon never worked
    for HUD or in loan servicing, she could not opine about “what
    is material to HUD’s decision to pay out claims,” nor could
    she suggest that all of Carrington’s false statements caused a
    loss to HUD. But the district court did permit Calderon to tes-
    tify from her own experience and explain what happened
    when she saw HUD reject loans or require indemnification.
    Again, the district court placed too much weight on where
    Calderon worked. Rule 702 does not suggest that specialized
    knowledge can be developed only in certain ways, and the
    Supreme Court’s decision in Kumho Tire Co. v. Carmichael, 
    526 U.S. 137
    , 150 (1999), points in the opposite direction—experts
    and expertise come in many different forms. For present pur-
    poses, working for HUD is not the sole path for a proffered
    expert to become sufficiently knowledgeable about HUD’s
    decision-making processes or the causes of its payments on
    federal insurance claims. Many people with long careers in
    the residential mortgage industry can and do develop this ex-
    pertise. Nevertheless, the district court did not abuse its dis-
    cretion in its ultimate ruling. Both materiality and causation
    are determined through nuanced, multi-factored analyses.
    10                                                  No. 22-1553
    The district court correctly recognized that Calderon cannot
    testify about the existence of a conclusive list of what is mate-
    rial to HUD’s insurance-endorsement decisions or requests
    for indemnification. Nor could she opine that certain defects
    always cause losses to HUD.
    On appeal, Calderon claims that the scope of her expert
    testimony was narrower than the district court intimated. For
    example, as to materiality, she says that her opinion would be
    “that a particular loan was insured with a material defect that
    she has seen in her experience to result in rejection when HUD
    is aware of the defect.” In our view, the district court’s order
    contemplated the admission of such testimony. The district
    court said that Calderon “can discuss her experience and why
    her loans have been rejected in the past” and that she could
    “give her opinions on [the reviewed] loans so long as they
    stem from her experience as an underwriter” and do not “in-
    vade[] the province of the jury.” Otherwise, the court was well
    within its discretion to confine Calderon’s expert opinions to
    the bounds of her actual experience. The court reasonably
    prevented her from offering more sweeping conclusions
    about materiality and causation.
    Finally, the district court admitted Carrington’s rebuttal
    expert, Kori Keith, even though Keith lacked some of the un-
    derwriting qualifications that Calderon has. Calderon argues
    that if Calderon’s testimony was excluded, Keith’s testimony
    must be excluded too. But the scope of Keith’s expert testi-
    mony was different from the scope of Calderon’s. Keith was
    called to testify about underwriting practices generally and
    the purpose of the federal mortgage insurance program. She
    also planned to rebut the process Calderon followed when
    she evaluated the reviewed loans. The district court did not
    No. 22-1553                                                    11
    abuse its discretion when it determined that Keith’s twenty-
    plus years of experience in the residential mortgage industry
    qualified her as an expert, and that her review of the com-
    plaint, the reviewed loans, and the applicable HUD regula-
    tions were sufficient to support her proffered opinion.
    III
    This brings us to the heart of the appeal: Calderon’s chal-
    lenge to the grant of summary judgment in favor of Carring-
    ton. Our examination of that decision is de novo. Dunlevy v.
    Langfelder, 
    52 F.4th 349
    , 353 (7th Cir. 2022). Summary judg-
    ment is appropriate only when “there is no genuine dispute
    as to any material fact and the movant is entitled to judgment
    as a matter of law.” Fed. R. Civ. P. 56(a). “We draw all justifi-
    able inferences in favor of the nonmoving party” and view the
    facts in the light most favorable to Calderon, the nonmovant.
    Scaife v. U.S. Dep’t of Veterans Affairs, 
    49 F.4th 1109
    , 1115 (7th
    Cir. 2022).
    Calderon’s primary evidence of both materiality and cau-
    sation comes from her review of the 349 loans. The district
    court concluded that her evidence failed to support both these
    elements. We look first at materiality, and then at causation.
    A
    Under the False Claims Act, a false claim is “material” if it
    has a “natural tendency to influence, or be capable of influ-
    encing, the payment or receipt of money or property.” 
    31 U.S.C. § 3729
    (b)(4). In Universal Health Services, Inc. v. United
    States ex rel. Escobar, the Supreme Court clarified that a false
    claim would be material in “two circumstances”: “(1) ‘[if] a
    reasonable man would attach importance to [it] in determin-
    ing his choice of action in the transaction’; or (2) if the
    12                                                  No. 22-1553
    defendant knew or had reason to know that the recipient of
    the representation attaches importance to the specific matter
    ‘in determining his choice of action,’ even though a reasona-
    ble person would not.” 
    579 U.S. 176
    , 193 (2016) (alterations in
    original) (quoting the Restatement (Second) of Torts § 538
    (1976)).
    Escobar did not end with the identification of those two cir-
    cumstances; it also provided additional guidance on how to
    approach materiality in these cases. For example, it confirmed
    that mere regulatory violations, even if the regulation is la-
    beled by the government as “material” to governmental deci-
    sion-making, are not automatically material for the purposes
    of the Act without additional evidence that the government
    “consistently refuses to pay claims in the mine run of cases
    based on noncompliance with the particular statutory, regu-
    latory, or contractual requirement.” Id. at 195. Additionally,
    “if the Government pays a particular claim in full despite its
    actual knowledge that certain requirements were violated,
    that is very strong evidence that those requirements are not
    material.” Id.
    The district court held that Calderon had failed to estab-
    lish materiality because she did not present evidence that
    would permit a reasonable factfinder to conclude that HUD
    viewed the alleged underwriting deficiencies as important. It
    also criticized her for failing to rebut the possibility that HUD
    was aware of Carrington’s potential violations but took no ac-
    tion. Although the question is close, we conclude that when
    all permissible inferences are properly drawn in Calderon’s
    favor, there is enough evidence of materiality to clear the
    summary judgment hurdle.
    No. 22-1553                                                 13
    Calderon proffered evidence that (if believed) would
    show that the deficiencies she identified in the reviewed loans
    are material under 
    24 C.F.R. § 203.255
    (g). As we noted earlier,
    that regulation explains that “serious and material viola-
    tion[s]” will require the lender to indemnify HUD because,
    but for those violations, “the mortgage loan should not have
    been approved and endorsed.” 
    Id.
     § 203.255(g)(3). Relevant
    material violations include the failure to:
    (i) verify the creditworthiness, income, and/or
    employment of the mortgagor in accordance
    with FHA requirements; (ii) verify the assets
    brought by the mortgagor for payment of the re-
    quired down payment and/or closing costs in
    accordance with FHA requirements….
    Id. § 203.255(g)(3)(i)–(ii). In the reviewed loans, Calderon
    found several instances of overstated income, improperly
    omitted debt, and insufficient documentation of assets, in-
    come, and debt—problems that mirror the material violations
    identified in the regulation. And even though Escobar in-
    structs that simply labeling these violations as “material” in
    the regulation does not establish materiality without further
    proof, that does not mean that the regulatory evidence is be-
    side the point. The regulations provide some guidance, in
    HUD’s own voice, about the false certifications that would
    improperly induce the issuance of federal insurance, and
    those are precisely the false certifications present here.
    Calderon also proffered evidence that HUD issued indem-
    nification agreements to Carrington when faced with similar
    loan deficiencies in the past. She did so with her own expert
    testimony. As the district court ruled, Calderon may testify
    that she has seen certain types of underwriting deficiencies in
    14                                                No. 22-1553
    her experience, and that those deficiencies resulted in re-
    quests for indemnification from HUD. On top of that, Calde-
    ron proffered a series of letters that HUD sent to Carrington,
    detailing material loan deficiencies that HUD identified dur-
    ing its post-endorsement technical review of nine Carrington
    loans. HUD explained that it would issue an indemnification
    agreement if the deficiencies were not addressed. The types
    of material deficiencies that HUD identified in those letters—
    improper sourcing of closing funds, failure to explain large
    deposits, inadequate closing funds, failure to analyze debts
    correctly, overstated income, and inadequate documentation
    for credit analysis—are akin to the deficiencies that Calderon
    identified in the reviewed loans. These letters therefore con-
    firm that HUD “refuses to pay claims … based on noncompli-
    ance” with these kinds of underwriting requirements. See Es-
    cobar, 579 U.S. at 195. The letters also show that Carrington
    was on notice about which false certifications were serious in
    HUD’s eyes and “had reason to know that the recipient of the
    representation attaches importance to the specific matter.” Id.
    at 193.
    Carrington responds that “HUD’s conclusion that a spe-
    cific defect is material when reviewing one loan cannot sup-
    port a reasonable inference that similar defects will always be
    material for all loans.” But this line of argument asks us to
    weigh the evidence, a task that is best reserved for a fact-
    finder. For example, Calderon says that overstated income in
    a particular borrower’s loan file is a serious deficiency; Car-
    rington responds that overstated income occurs in varying
    degrees and does not, in every instance, constitute major non-
    compliance. Carrington’s rebuttal does not entitle it to sum-
    mary judgment, because the degree of the deficiency is genu-
    inely disputed.
    No. 22-1553                                                    15
    Similarly, Carrington points out that it was able to miti-
    gate several of the deficiencies identified in the letters and
    was forced to indemnify only one loan in the nine that were
    reviewed. It argues that the relative ease with which it could
    have mitigated any alleged deficiency is significant because,
    once mitigated, HUD will make payments on any insurance
    claims; HUD’s willingness to issue payment undermines the
    materiality of the violation. But again, the fact-intensive job of
    evaluating the identified deficiencies and deciding which
    ones could have been mitigated is a job best left to the jury.
    At summary judgment, the question is only whether Cal-
    deron has proffered sufficient evidence to warrant a reasona-
    ble inference in her favor. We do not doubt that Carrington
    might be able to convince a rational trier of fact that the de-
    fects in the reviewed loans are factually distinguishable from
    the material defects identified in HUD’s letters or are capable
    of correction. But that does not warrant summary judgment.
    Calderon has identified several false certifications in 349
    loans, she has shown that those false certifications are mate-
    rial according to federal regulations and her own underwrit-
    ing experience, and she has proffered evidence that HUD has
    in the past deemed similar violations material. A factfinder
    would be permitted to infer materiality from this evidence.
    We are also concerned that the district court placed too
    much weight on its belief that HUD knew about Carrington’s
    false certifications. If HUD had knowledge of the false certifi-
    cations and nonetheless issued the insurance (or refrained
    from demanding indemnification), Escobar instructs that this
    would be strong evidence that the certifications were not ma-
    terial. The district court was impressed by HUD’s pre-en-
    dorsement review of all Carrington’s loan files, the selective
    16                                                 No. 22-1553
    post-endorsement technical reviews of a sizable sample, and
    Calderon’s own allegations, which she reported to HUD
    when she initiated this lawsuit.
    But the extent of HUD’s knowledge is contested. The rec-
    ord does not establish that HUD’s pre-endorsement review
    would have revealed widespread underwriting violations.
    HUD’s own regulations suggest that the pre-endorsement re-
    view looks only to see if the required documents are all in the
    file; the content of those documents is not examined. For that
    matter, HUD’s post-endorsement reviews provide infor-
    mation on only a select sample of Carrington’s loans and do
    not show that HUD possessed a broad awareness of all al-
    leged deficiencies in Carrington’s federally insured loans. Fi-
    nally, the record is unclear as to how much HUD learned from
    Calderon; in her deposition, she could not remember what
    she had told government representatives in those initial con-
    versations.
    In United States ex rel. Yannacopoulos v. General Dynamics,
    we rested our materiality ruling on the fact that the agency
    had “actually learned of the supposed misrepresentation.”
    
    652 F.3d 818
    , 831 (7th Cir. 2011). Such certainty of knowledge
    is a far cry from the district court’s conclusion here that “HUD
    was likely aware of any violation.” To infer HUD’s
    knowledge is to draw an inference in the moving party’s favor
    from a heavily disputed set of facts. A juror could reasonably
    conclude that HUD was unaware of Carrington’s alleged cul-
    ture of reckless underwriting. The extent of HUD’s
    knowledge is thus still up for grabs; that issue was not suita-
    ble for summary judgment.
    No. 22-1553                                                      17
    B
    Turning now to causation, we must briefly address the
    False Claims Act’s damages provisions. Some circuits have in-
    terpreted the Act as creating “two sorts of liability.” See
    United States ex rel. Schwedt v. Planning Research Corp., 
    59 F.3d 196
    , 199 (D.C. Cir. 1995). As they see it, the first form of liabil-
    ity can be found in the Act’s civil penalty, which, according to
    Schwedt, may be imposed “regardless of whether the submis-
    sion of the claim actually causes the government any dam-
    ages; even if the claim is rejected, its very submission is a basis
    for liability.” 
    Id.
     The second form of liability they identify is
    the Act’s provision of treble damages, which is triggered only
    “for damages that the government sustains because of the
    submission of the false claim.” 
    Id.
     Under this understanding,
    Calderon’s claims could move forward as claims for civil pen-
    alties, based on her satisfaction of the other three elements of
    a claim under the Act.
    Though Calderon suggested to the district court that she
    should proceed to trial even without sufficient evidence of
    causation (i.e., by using the first approach mentioned above),
    she has not renewed that argument on appeal. Because she
    has not asked us to do so, we do not consider the possibility
    of a claim limited to civil penalties. Whether we agree with
    the Schwedt approach is a question we leave for another day.
    In order to avoid summary judgment, therefore, Calderon
    had to proffer evidence covering all four elements of the
    claim, including causation. Indeed, since United States v. Luce,
    we have required a plaintiff to establish both actual and prox-
    imate cause to recover under the Act. 
    873 F.3d 999
    , 1014 (7th
    Cir. 2017). Carrington’s false certifications to HUD must not
    only be material, they also must cause a foreseeable harm: “a
    18                                                  No. 22-1553
    type that a reasonable person would see as a likely result of his
    or her conduct.” 
    Id. at 1012
     (emphasis in original) (quoting
    Blood v. VH-1 Music First, 
    668 F.3d 543
    , 546 (7th Cir. 2012)).
    Simple but-for causation is not enough.
    To show proximate causation, Calderon had to put for-
    ward evidence indicating that the false certifications in the re-
    viewed loans were the foreseeable cause of the later defaults.
    We focus on the defaults because that is what triggers HUD’s
    payment obligations under the federal insurance program.
    We recognize that when we adopted the proximate-cause
    standard in Luce, we did not explicitly state that proving prox-
    imate cause in cases about federal mortgage insurance re-
    quires proving the causes of defaults. We did, however, rely
    heavily on the Fifth Circuit’s reasoning in United States v. Mil-
    ler, 
    645 F.2d 473
     (5th Cir. 1981), and the Third Circuit’s rea-
    soning in United States v. Hibbs, 
    568 F.2d 347
    , 351 (3d Cir.
    1977). In both of those cases, the courts made explicit state-
    ments about the need to prove what caused the defaults.
    In Miller, the Fifth Circuit held that “[i]n the context of a
    federal housing case, the United States must show that the
    false statements in the application were the cause of subse-
    quent defaults.” 645 F.2d at 476. And in Hibbs, the Third Cir-
    cuit said that because it is the default that causes the loss to
    the United States, a plaintiff must show some connection be-
    tween the false certifications and the default. 
    568 F.2d at 351
    .
    Where a default is caused “by a flood or some other unin-
    sured catastrophe,” a defendant’s false certifications cannot
    be said to have caused the government’s loss. 
    Id.
     This focus
    seems sound to us. To ensure that the false certifications were
    a substantial factor in bringing about HUD’s losses and that
    the losses were foreseeable to the defendant, the plaintiff must
    No. 22-1553                                                   19
    show that the false certifications played some role in causing
    or increasing the risk of a subsequent default.
    The parties dispute how Calderon might meet that bur-
    den. Calderon argues that she should be allowed to extrapo-
    late causation from a generalized statistical analysis of Car-
    rington’s federally insured loans. Carrington responds that
    Calderon had to proceed loan-by-loan through the 349 loans
    and show how each allegedly false statement caused each
    loan’s default. But because we find that Calderon did not
    meet her burden under either method, we do not resolve
    which method was appropriate.
    We consider the statistical method first. Calderon claims
    to have offered proof of causation in the form approved in
    United States v. Hodge, 
    933 F.3d 468
     (5th Cir. 2019). There the
    Fifth Circuit found sufficient evidence to support a jury ver-
    dict against the defendant where the government showed
    that the defendant maintained a culture of “reckless under-
    writing” and that this culture resulted in elevated default
    rates for its federally insured loans when contrasted with the
    national default rate for such loans. 
    Id.
     at 475–76. Calderon
    and Carrington dispute whether Calderon has provided suf-
    ficient proof of reckless underwriting practices at Carrington.
    But Calderon can avail herself of this method of proof only if
    she proffers evidence on which a trier of fact could rely to find
    that Carrington had an elevated default rate.
    To support this fact, Calderon points us to Carrington’s
    2014 annual financial report, where it disclosed a total fore-
    closure rate of 10.59 percent. That rate is 500 percent higher
    than the national foreclosure rate of 2.15 percent, and so it
    might seem to be a strong support for her position. But the
    problem is that the report provides little information about
    20                                                 No. 22-1553
    the performance of Carrington’s federally insured loans. Cal-
    deron needed to identify the total number of federally insured
    loans that Carrington serviced, determine Carrington’s de-
    fault rate for those loans, and then compare that to the na-
    tional default rate of federally insured loans. Having failed to
    do that, Calderon’s attempted statistical analysis falls short.
    Without some evidence that Carrington had a higher-than-
    average default rate for its federally insured loans, a jury
    could not find that Carrington’s underwriting practices, reck-
    less or not, had any effect on subsequent loan performance.
    Turning to the loan-by-loan method, Calderon proffers
    her analysis of the 349 reviewed loans, in combination with
    Carrington’s documented reason for each loan default. The
    reason for default is recorded in code form. Calderon asserts
    that the codes, which identified problems such as “Excessive
    Obligations,” were plain-English descriptions that were ac-
    cessible to any jury. Perhaps so, but that was not the problem
    with them. The sticking point is vagueness: the codes do not
    contain any information that would permit a reasonable fact-
    finder to determine the cause of default. For example, as Car-
    rington argues, a code such as “Curtailment of Income”
    would not explain whether the default was caused by a false
    statement regarding income in the borrower’s file or by recent
    unemployment.
    Calderon proffered no expert who could interpret the
    codes, explain common causes of defaults, or discuss the de-
    faults in the reviewed loans. Nor has Calderon herself under-
    taken the kind of analysis of the loan servicing records that
    would permit her to opine to the jurors about the events that
    caused a “Curtailment of Income” and whether those events
    were related to the initial false statement. While the district
    No. 22-1553                                                   21
    court agreed to let Calderon testify about the underwriting
    errors that led in her experience to defaults, she has not shown
    how that experience-based testimony would help a jury. For
    example, Calderon’s re-underwrite of Borrower 14’s loan file
    revealed an inflated income and a default code of “Curtail-
    ment of Income.” But a lay factfinder reviewing the loan file
    would find no evidence that would allow her to identify
    whether the reported income was spot on, too high, or too
    low. Pay stubs in the file revealed what a reasonable person
    might calculate as $7,801.40 in monthly income; the total in-
    come reported by Carrington was $7,659. Calderon’s re-un-
    derwrite provides scant guidance on how to assess or recreate
    her findings. Further, that same lay factfinder would have no
    information about what “Curtailment of Income” meant for
    Borrower 14 and why that borrower stopped being able to
    make their monthly payments. The inference that Calderon is
    asking the jury to draw as to causation in loan files like this
    one is speculative and impermissible.
    Other courts have noted that misrepresentations about a
    borrower’s income, debt, and assets foreseeably increase the
    risk of default by their very nature. See, e.g., United States v.
    Spicer, 
    57 F.3d 1152
    , 1159 (D.C. Cir. 1995) (holding that the de-
    fendant’s intentional misrepresentations about the size of bor-
    rower down payments foreseeably caused HUD’s losses
    when the loans defaulted, even where there was limited evi-
    dence to explain each default and even though other factors
    might have played a role). But we are reluctant to extend that
    reasoning to this case. On the present record, it is not clear
    how a factfinder would even spot the alleged false statement
    in each loan file, let alone evaluate its seriousness and scope.
    And though Calderon asserts that the misrepresentations in
    this case are of the type identified in Spicer, we do not see
    22                                                No. 22-1553
    much in the record to support that point other than Calde-
    ron’s assertions. Without more evidence from which a jury
    could conclude that Carrington’s alleged misrepresentations
    in each loan caused the subsequent defaults, the nature of
    those misrepresentations is not enough to get past summary
    judgment.
    IV
    Because Calderon did not proffer evidence that would
    permit a reasonable trier of fact to find that Carrington’s vio-
    lations of the False Claims Act caused any harm to HUD, we
    AFFIRM the judgment of the district court.