Maine Lobstermen's Association v. National Marine Fisheries Service ( 2023 )


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  •  United States Court of Appeals
    FOR THE DISTRICT OF COLUMBIA CIRCUIT
    Argued February 24, 2023             Decided June 16, 2023
    No. 22-5238
    MAINE LOBSTERMEN’S ASSOCIATION,
    APPELLANT
    STATE OF MAINE DEPARTMENT OF MARINE RESOURCES,
    ET AL.,
    APPELLANT-INTERVENORS
    v.
    NATIONAL MARINE FISHERIES SERVICE, ET AL.,
    APPELLEES
    Consolidated with 22-5244, 22-5245, 22-5246
    Appeals from the United States District Court
    for the District of Columbia
    (No. 1:21-cv-02509)
    Paul D. Clement argued the cause for appellant Maine
    Lobstermen’s Association. With him on the briefs were Mary
    Anne Mason, Jane C. Luxton, James Y. Xi, Ryan Steen, and
    Jason Morgan.
    2
    Paul S. Weiland and Brian Ferrasci-O’Malley were on the
    briefs for intervenor-appellant State of Maine Department of
    Marine Resources.
    Alfred C. Frawley IV and Thimi R. Mina were on the briefs
    for intervenor-appellant District 4 Lodge of the International
    Association of Machinists and Aerospace Workers, Local
    Lodge 207.
    Samuel P. Blatchley was on the briefs for intervenor-
    appellant Massachusetts Lobstermen’s Association.
    H. Christopher Bartolomucci was on the brief for amicus
    curiae Maine State Chamber of Commerce in support of appel-
    lants.
    John M. Formella, Attorney General, Office of the Attor-
    ney General for the State of New Hampshire, and Christopher
    G. Aslin, Senior Assistant Attorney General, were on the brief
    for amicus curiae State of New Hampshire in support of appel-
    lants.
    Sommer H. Engels, Attorney, U.S. Department of Justice,
    argued the cause for federal appellees. With her on the brief
    were Todd Kim, Assistant Attorney General, and Andrew C.
    Mergen, Rachel Heron, and J. Brett Grosko, Attorneys.
    Kristen Monsell argued the cause for intervenor-appellees
    Conservation Law Foundation, et al. With her on the brief were
    Erica A. Fuller and Jane P. Davenport.
    Before: KATSAS and RAO, Circuit Judges, and GINSBURG,
    Senior Circuit Judge.
    3
    Opinion for the Court filed by Senior Circuit Judge
    GINSBURG.
    GINSBURG, Senior Circuit Judge: The National Marine
    Fisheries Service licenses fisheries in federal waters. In doing
    so, the Service must comply with the Endangered Species Act
    (ESA). That Act requires the Service to prepare an “opinion,”
    commonly known as a biological opinion, “detailing how the
    [fishery] affects” any endangered or threatened species. 
    16 U.S.C. § 1536
    (b)(3)(A). Using “the best scientific and com-
    mercial data available,” the Service’s opinion must determine
    whether the federal fishery is “not likely” to jeopardize the sur-
    vival of a protected species. 
    Id.
     § 1536(a)(2).
    In this case, we decide whether, in a biological opinion,
    the Service must, or even may, when faced with uncertainty,
    give the “benefit of the doubt” to an endangered species by
    relying upon worst-case scenarios or pessimistic assumptions.
    We hold it may not. The ESA and the implementing regulations
    call for an empirical judgment about what is “likely.” The
    Service’s role as an expert is undermined, not furthered, when
    it distorts that scientific judgment by indulging in worst-case
    scenarios and pessimistic assumptions to benefit a favored side.
    I.   Factual and Regulatory Background
    This case arises from the Service’s efforts to protect the
    North Atlantic right whale from mankind in general, and lob-
    stermen in particular. We begin by providing some back-
    ground.
    A. The North Atlantic Right Whale
    The North Atlantic right whale is distinguished by an enor-
    mous mouth, a black stocky body, and the lack of a dorsal fin.
    4
    It feeds by “taking in huge drafts of water filled with small
    copepods, krill, and other zooplankton.” Eric Jay Dolin,
    Leviathan: The History of Whaling in America 21 (2007).
    “Right whales are migratory mammals.” Defs. of Wildlife
    v. Gutierrez, 
    532 F.3d 913
    , 915 (D.C. Cir. 2008). The whale’s
    range includes the coastal waters of the eastern United States
    and Canada, but it occasionally wanders as far as Iceland and
    Norway. Although the whale’s range is broad, the Service has
    designated its “critical habitat,” see 
    16 U.S.C. § 1532
    (5)(A), as
    the whale’s traditional foraging grounds in the Gulf of Maine
    and the Georges Bank, and its calving grounds in the warm
    waters of the southeastern U.S. 
    81 Fed. Reg. 4838
     (2016),
    codified at 
    50 C.F.R. § 226.203
    .
    The North Atlantic right whale has been listed as endan-
    gered for almost as long as the Government has kept a list. See
    
    35 Fed. Reg. 18,319
    , 18,320 (1970). For several years, the
    whale population recovered slowly, peaking at almost 500 in
    2011. Its recovery has since stalled, however; a recent Service
    assessment puts the number of right whales left at only 368.
    See North Atlantic Right Whale (Eubalaena glacialis):
    Western Atlantic Stock 17–19 (May 2022), https://perma.cc/
    UW24-7TQ2.
    5
    Several factors may explain the recent downward trend.
    The availability of food is one of them. To sustain its massive
    body, an adult right whale must feed upon dense groups of
    copepods. In the past, the Gulf of Maine provided an ample
    supply. Following abrupt warming of the Gulf in 2010, how-
    ever, the whale’s favorite prey is no longer as abundant. Right
    whales need large stores of blubber to calve, so having less
    food has led to a decline in the birth rate. Less food has also
    altered the whale’s migratory patterns; the Service has seen “a
    shift of right whales out of habitats such as the Great South
    Channel and the Bay of Fundy, and into [other] areas such as
    the Gulf of St. Lawrence in the summer and [waters] south of
    New England and Long Island in the fall and winter.” See also
    Leah M. Crowe et al., In Plane Sight: A Mark-Recapture
    Analysis of North Atlantic Right Whales in the Gulf of St.
    Lawrence, 46 Endangered Species Research 227, 243 (2021)
    (showing the Gulf of St. Lawrence “is currently an important
    habitat for approximately 40% of this species from the begin-
    ning of May to December”). This is significant because the
    6
    migration into Canada has made the whale more likely to get
    entangled in the heavy fishing gear used to harvest Canadian
    snow crab.
    Indeed, most right whales die from vessel strikes or entan-
    glement in fishing gear. Entanglement may also reduce calving
    rates. Whether and to what extent the federal lobster fishery is
    responsible for hampering the right whale population is the
    question at the heart of the scientific controversy giving rise to
    this litigation.
    B. The Agency Actions
    In 2017, 17 right whales were killed by vessel strikes and
    fishing gear, five found in the United States. and a dozen in
    Canada, leading the Service to declare an “unusual mortality
    event” for the whale under the Marine Mammal Protection Act
    (MMPA). 16 U.S.C. § 1421c. At the same time, a new study
    documented the whale’s sudden decline. See Richard M. Pace,
    III, et al., State–Space Mark–Recapture Estimates Reveal a
    Recent Decline in Abundance of North Atlantic Right Whales,
    7 Ecology and Evolution 8730, 8739 (2017). The Service
    responded by taking action under the ESA and the MMPA.
    1. The biological opinion
    In light of the new study and the elevated number of right
    whale deaths, the Service reinitiated a formal consultation
    under § 7 of the ESA for fisheries that may harm the right
    whale, including the lobster fishery. See 
    50 C.F.R. § 402.16
    (a)(1)–(2). The Service administers both the ESA and
    federal fisheries, so the consultation occurred in-house: The
    Sustainable Fisheries Division consulted with the Protected
    Resources Division, the former being the division that manages
    7
    federal fisheries, the latter being the experts in protecting
    marine mammals.
    In a typical consultation, an agency proposes an action and
    the Service prepares a “biological opinion” documenting the
    effects of the action. 
    50 C.F.R. § 402.14
    (h). If the Service finds
    the action will likely “jeopardize” a protected species by appre-
    ciably reducing its chance of surviving, then the Service pro-
    poses “reasonable and prudent alternatives,” if there are any,
    that reduce the increased risk of extinction. 
    16 U.S.C. § 1536
    (b)(3)(A); 
    50 C.F.R. § 402.14
    (h)(2). The action agency
    then has three choices: It may implement the proposed alterna-
    tive(s), end the action, or ask the politically accountable
    Endangered Species Committee for an exemption from the
    ESA. 
    16 U.S.C. § 1536
    (e), (g).
    That is not what happened here, however. Instead, as we
    explain below, after finding the lobster and related Jonah crab
    federal fisheries kill an unsustainable number of right whales,
    the Service avoided a finding of jeopardy by redefining the
    action at issue.
    a. The Service concluded the federal lobster fish-
    ery kills many right whales
    In the biological opinion, the Service’s first task was to
    describe the “reasonably certain” effects of the fisheries on the
    right whale. 
    50 C.F.R. § 402.02
    . It began with this preliminary
    qualification, quoting the legislative history of the 1979 ESA
    amendments:
    Data are limited, so we are often forced to make assump-
    tions to overcome the limits in [sic] our knowledge. Some-
    times, the best available information may include a range
    of values for a particular aspect under consideration or dif-
    8
    ferent analytical approaches may be applied to the same
    data set. When appropriate in those cases, the uncertainty
    is resolved in favor of the species . . . . We generally select
    the value that would lead to conclusions of higher, rather
    than lower, risk to endangered or threatened species. This
    approach provides the “benefit of the doubt” to threatened
    and endangered species.
    Quoting H.R. Conf. Rep. No. 96-697, at 12, reprinted in 1979
    U.S.C.C.A.N. 2572, 2576. The Service then summarized the
    data on right whale entanglements beginning in 2010, when
    there was a “regime shift” in the Gulf of Maine. From 2010 to
    2018, there were two documented right whale deaths or serious
    injuries (likely deaths)1 from entanglement known to have orig-
    inated in the United States. On the other hand, as the charts
    below show, most documented deadly and non-deadly entan-
    glements cannot be traced with confidence to a particular coun-
    try (or, for that matter, to a type of fishing gear).
    Deadly Entanglements by Country of Origin
    8
    6
    4
    2
    0
    2010   2011   2012    2013   2014     2015   2016   2017   2018
    Confirmed Canada    Confirmed U.S.   Unknown Country of Origin
    1
    Because serious injuries are likely deaths, 
    50 C.F.R. § 216.3
    , we
    treat them as deaths for the remainder of our opinion.
    9
    Entanglements by Country of Origin
    20
    15
    10
    5
    0
    2010 2011 2012 2013 2014 2015 2016 2017 2018
    Confirmed Canada   Confirmed U.S.   Unknown Country of Origin
    The Service also believes most right whale deaths are
    undocumented. See Richard M. Pace et al., Cryptic Mortality
    of North Atlantic Right Whales, 3 Conservation Sci. and
    Practice 1, 6 (2021) (estimating less than half of whale
    carcasses are documented). From disparities in the documented
    number of seriously entangled and dead whales, the Service
    infers these unseen deaths disproportionally result from
    entanglement; whales suffering from chronic entanglement
    may lose buoyancy and sink to their deaths. See 
    id.
     at 2–3, 6–
    7.
    The Service faced the unenviable task of dealing with
    these known unknowns. To do so, the Service made certain dis-
    puted assumptions about the unknown data and the unseen
    deaths. After making these assumptions, the Service concluded
    the fishing gear used in the lobster and Jonah crab federal fish-
    eries kills about 46 North Atlantic right whale each decade,
    which would decimate the right whale population in less than
    ten years. The Service also estimated that federal fisheries
    entangle more than nine percent of right whales each year. To
    10
    reach this estimate, the Service put aside the data on confirmed
    entanglements and relied instead upon a “scarring analysis”
    from a 2019 study, noting “This approach provides the benefit
    of the doubt to the species and a more conservative estimate of
    total right whale entanglements.”
    b. The Service found no jeopardy by relying upon
    a “Conservation Framework”
    While the Service drafted the biological opinion, it also
    prepared a “Conservation Framework” announcing the
    Service’s commitment to reducing right whale entanglements
    in federal fisheries, in four specific phases, to near zero by
    2030. The Service concluded these targets were “necessary to
    ensure the goals of the ESA, namely survival and recovery of
    the species, are met.”
    Despite the need for the Framework, and despite finding
    the lobster fishery kills an unsustainable number of right
    whales, the Service found federal fisheries were unlikely to
    jeopardize the right whale. In order so to find, the Service pro-
    jected the effects of the fishery over five decades assuming the
    decreases in risk promised by the Framework are realized. In
    making these projections, the Service, “[w]hen dealing with
    data uncertainties . . . utilized metrics representing the worst
    case scenario. Consequently,” it acknowledged, “model out-
    puts very likely overestimate the likelihood of a declining pop-
    ulation.”
    In response to public comments criticizing the Service’s
    assumptions, the Service said it “recognize[d] that the assump-
    tions may be considered pessimistic,” but said it had no choice:
    “[G]iven Congressional guidance on implementation of the
    ESA,” the Service said, “we need to give the benefit of the
    doubt to the species.” The congressional “guidance” repeatedly
    11
    referenced by the Service was a single sentence in a 1979 con-
    ference report, to wit: “This language continues to give the ben-
    efit of the doubt to the species, and it would continue to place
    the burden on the action agency to demonstrate to the consult-
    ing agency that its action will not violate Section 7(a)(2).” H.R.
    Conf. Rep. No. 96-697, at 12, reprinted in 1979 U.S.C.C.A.N.
    2572, 2576.
    2. The phase one rule
    Soon after issuing the biological opinion, the Service
    promulgated a final rule implementing the first phase of the
    Framework and amending the “take reduction plan” for the
    right whale under the MMPA. See 
    86 Fed. Reg. 51,970
     (2021),
    codified at 
    50 C.F.R. § 229.32
    ; see also 
    16 U.S.C. § 1387
    (f).
    The phase one rule requires lobstermen to mark their ropes, add
    weak links or use weak ropes, and increase the number of traps
    they use for each “trawl.”2 86 Fed. Reg. at 51,972–74. The rule
    also includes seasonal fishing restrictions; for example, it bans
    fixed buoy lines from October through January in the vast
    restricted area of the Gulf of Maine shown below. Id. at
    51,972–73.
    2
    “A trawl consists of two or more traps attached to a single ground-
    line, with at least one, but most often two, surface lines.”
    12
    C. The Lawsuits
    Conservation groups and the lobstermen sued the Service
    from opposite flanks, challenging both the biological opinion
    and the phase one rule.
    1. The conservation groups’ lawsuit
    The district court granted summary judgment to the con-
    servation groups. See Ctr. for Biological Diversity v.
    Raimondo, 
    610 F. Supp. 3d 252
    , 269–71 (D.D.C. 2022). For
    reasons not relevant here, the court held that (1) the Service’s
    13
    incidental take permit in the biological opinion did not comply
    with the ESA and the MMPA, 
    id.
     at 268–71, and (2) the phase
    one rule was not stringent enough to meet the goals of the
    MMPA. 
    Id. at 279
    . The Service did not appeal.
    2. The lobstermen’s lawsuit
    In the separate action brought by the Maine Lobstermen’s
    Association, other lobstermen groups and Maine’s Department
    of Marine Resources intervened as plaintiffs, while conserva-
    tion groups intervened as defendants. This time, the district
    court entered summary judgment for the Service. Maine
    Lobstermen’s Ass’n, Inc. v. Nat’l Marine Fisheries Serv., No.
    CV 21-2509 (JEB), 
    2022 WL 4392642
    , at *15 (D.D.C. Sept. 8,
    2022). The lobstermen and Maine appealed.
    3. The remand
    While these appeals were pending, the district court gave
    the conservation groups their remedy: the court ordered the rule
    amended by December 9, 2024, to comply with the goals of the
    MMPA. 
    2022 WL 17039193
    , at *3 (D.D.C. Nov. 17, 2022).
    The court also remanded the biological opinion so the Service
    could address the allegedly defective incidental take statement.
    
    Id.
     In light of this remand, the Service decided to accelerate the
    timeline for the third phase of the Framework by merging it
    with the second phase.
    D. The Consolidated Appropriations Act
    A few weeks after the district court ordered the Service to
    promulgate a new rule by December 9, 2024, the Congress
    enacted the Consolidated Appropriations Act. Pub. L. No. 117-
    328, 
    136 Stat. 4459
     (2022). Section 101(a) of Division JJ of
    that law provides:
    14
    [F]or the period beginning on the date of enactment of this
    Act and ending on December 31, 2028, the [phase one
    rule] shall be deemed sufficient to ensure that the contin-
    ued Federal and State authorizations of the American lob-
    ster and Jonah crab fisheries are in full compliance with
    the [MMPA] and the [ESA].
    Paragraph (a)(2) of § 101 requires the Service to promulgate
    new rules “that take effect by December 31, 2028.” The Act
    also appropriates money to accelerate the deployment of
    “innovative” (i.e., ropeless) fishing gear. Id. § 203(a)(1).
    II. Jurisdiction
    Before reaching the merits, we must decide whether the
    appeals present a live case or controversy. If they do not, then
    we lack power to hear the case under Article III of the Consti-
    tution.
    A. The Lobstermen Have Standing
    We first consider the question of constitutional “standing,”
    which a plaintiff must establish at the outset of its suit. “In
    essence the question of standing is whether the litigant is enti-
    tled to have the court decide the merits of the dispute or of par-
    ticular issues.” Warth v. Seldin, 
    422 U.S. 490
    , 498 (1975). The
    analysis of standing to sue “in no way depends on the merits.”
    
    Id. at 500
    . When determining standing, therefore, “we assume
    the merits in favor of the plaintiff.” Waterkeeper All. v. EPA,
    
    853 F.3d 527
    , 533 (D.C. Cir. 2017).
    “[T]o establish standing, a plaintiff must show (i) that he
    suffered an injury in fact that is concrete, particularized, and
    actual or imminent; (ii) that the injury was likely caused by the
    15
    defendant; and (iii) that the injury would likely be redressed by
    judicial relief.” TransUnion LLC v. Ramirez, 
    141 S. Ct. 2190
    ,
    2203 (2021). An association may establish standing on behalf
    of injured members. Hunt v. Washington State Apple Advert.
    Comm’n, 
    432 U.S. 333
    , 343 (1977).
    The lobstermen’s standing to challenge the phase one rule
    is self-evident, as they are the “object of the action.” Lujan v.
    Defs. of Wildlife, 
    504 U.S. 555
    , 561 (1992). According to the
    Service, (i) the phase one rule will cost lobstermen $50 to $90
    million over the first six years. This concrete, particularized
    pocketbook injury gives the lobstermen a stake in the outcome
    of the suit. (ii) The harm is caused by the defendant Service,
    which promulgated the rule, and (iii) it may be redressed by the
    court; should the lobstermen prevail, we may vacate or remand
    the rule, giving them relief from enforcement, or at least a
    chance on remand to pursue their case against the rule free of
    the Service’s alleged legal errors.
    For related reasons, the lobstermen have standing to chal-
    lenge the biological opinion. The finding of no jeopardy in the
    biological opinion depends upon the Service keeping the phase
    one rule, which as we just explained, harms the lobstermen. So
    long as the biological opinion stands, either the rule must stand
    or the fishery must close. Although the proximate cause of the
    pocketbook injury is the rule, Article III standing does not fol-
    low the causation principles of tort law; an injury may be
    “fairly traceable” to an agency action that is not “the very last
    step in the chain of causation.” Bennett v. Spear, 
    520 U.S. 154
    ,
    168–69 (1997). A biological opinion is a paradigmatic exam-
    ple. A biological opinion “has a powerful coercive effect on the
    action agency”: federal agencies and their employees risk civil
    and criminal penalties for the incidental “taking” of a species
    if they ignore a biological opinion, so they rarely if ever do. 
    Id.
    at 169–70. This “virtually determinative effect” makes the
    16
    pocketbook injury fairly traceable to the biological opinion. 
    Id. at 170
    . A ruling for the lobstermen could “remove this barrier”
    to lifting the rule, which is enough for standing to challenge it.
    Duberry v. District of Columbia, 
    924 F.3d 570
    , 583 (D.C. Cir.
    2019).
    Last, the Maine Lobstermen’s Association has associa-
    tional standing to bring suit on behalf of its injured members.
    The Association explains that the suit is germane to its pur-
    poses, and there is no reason individual lobstermen must par-
    ticipate in the suit. Hunt, 
    432 U.S. at 343
    . Because the
    Association has standing to sue on behalf of its members, we
    do not need to consider the standing of the intervenors.
    Bowsher v. Synar, 
    478 U.S. 714
    , 721 (1986).3
    B. The Appeals Are Not Moot
    After the Consolidated Appropriations Act became law,
    the Service moved to dismiss these appeals as moot. In a dec-
    laration attached to the Service’s motion, Michael Pentony, the
    Service’s Greater Atlantic Regional Administrator, explains
    that because of the intervening law, the Service will no longer
    adhere to the timeline and targets set out by the Framework for
    the lobster and Jonah crab fisheries. Pentony also notes the
    Service will support the next rule with a new formal consulta-
    tion and biological opinion. Because of these intervening
    events, the Service argues the appeals are now moot and must
    be dismissed.
    3
    The conservation groups challenge the lobstermen’s standing to
    bring count two of the complaint, challenging the Framework. We
    do not reach count two, so we do not address our power to hear this
    claim.
    17
    1. The Consolidated Appropriations Act does not
    moot the appeals
    According to the Service, the Consolidated Appropriations
    Act ratifies the phase one rule and insulates it from challenge.
    “Where Congress enacts intervening legislation that defini-
    tively resolves the issues a litigant seeks to put before us,” the
    Service argues, “the claims are moot and we are precluded
    from deciding them.” Nuclear Energy Inst., Inc. v. EPA, 
    373 F.3d 1251
    , 1309 (D.C. Cir. 2004).
    Here, unlike in the cases cited by the Service, the interven-
    ing law does not resolve the issues before us. The Act provides
    the phase one rule “shall be deemed sufficient” to ensure the
    lobster fishery’s compliance with the ESA and the MMPA until
    2029. The Service concedes “sufficient” does not usually mean
    “necessary.” Rather, the ordinary public meaning of “suffi-
    cient” here is “[a]dequate” for complying with the ESA and
    MMPA. Black’s Law Dictionary (11th ed. 2019). This ordinary
    meaning is consistent with the evident purpose of the Act, viz.,
    to postpone the deadline set by the district court, giving the lob-
    stermen more lead time. Cf. Digital Realty Tr., Inc. v. Somers,
    
    138 S. Ct. 767
    , 777 (2018) (considering the “purpose and
    design” of a law to corroborate the meaning of the text). The
    Act is thus best read to set a temporary ceiling, not a floor, for
    compliance by the lobster and Jonah crab fisheries. The lob-
    stermen do not argue the rule is not “adequate” to comply; they
    argue the rule goes too far, not that it does not go far enough.
    If, as the lobstermen claim, the federal lobster fishery is not the
    problem, then the phase one rule is not the solution. No law
    allows the Service to keep in place a useless rule. The Act
    therefore does not resolve the issues before us.
    The Service’s plan to do a new consultation in the future
    is also of no moment. A future plan does not moot present
    18
    claims. The agency’s conduct has not ceased. Indeed, counsel
    for the Service told us during oral argument the Fisheries
    Division continues to rely upon the biological opinion when
    “granting permits for the fishery,” which confirms the biologi-
    cal opinion remains an operative decisional document in an
    ongoing permitting process affecting the lobstermen.
    2. The Service’s remaining arguments for dismissal
    are unavailing
    The Service’s remaining arguments belong in a merits
    brief, not in a motion to dismiss. In its motion, the Service
    argues the lobstermen have forfeited their claim against the
    rule. The Service also argues the lobstermen may get no relief
    from the rule because the lobstermen complain only about
    errors in the biological opinion, not in the rule. The Service
    further argues the phase one rule was promulgated under the
    MMPA, and so, the phase one rule does not depend upon the
    biological opinion.
    Before we address these arguments, a preliminary obser-
    vation is in order: These arguments have nothing to do with
    intervening events, so they are not about mootness at all.
    Rather, they go to the merits, as even the conservation groups
    concede.
    The Service, moreover, did not raise these merits argu-
    ments in its opening brief, so they are forfeited. Al-Tamimi v.
    Adelson, 
    916 F.3d 1
    , 6 (D.C. Cir. 2019); see also Solomon v.
    Vilsack, 
    763 F.3d 1
    , 13 (D.C. Cir. 2014) (“[T]he Secretary
    has—in a word—forfeited his forfeiture argument here.”). The
    Service, to be sure, did say, in the background section of its
    opening brief, that the lobstermen “do not challenge the Rule
    in this appeal.” This fleeting assertion, however, was belied by
    the Maine Lobstermen’s brief, which clearly challenged the
    19
    rule, arguing it was infected by the errors in the biological opin-
    ion. As the Service conceded during oral argument, it also did
    not raise in its opening brief the “specific argument” that the
    MMPA is an independent basis for the rule:
    COURT: Your defense of the rule in your briefing seems
    to rest entirely on the biological opinion and not on some
    independent ground or through MMPA process.
    COUNSEL: We haven’t advanced a specific argument . . .
    in our briefing as to the rule because we didn’t see that they
    had made a separate argument specific to the rule.
    The Service blames the lobstermen for the forfeiture, but the
    lobstermen preserved their claim at every turn. Count four of
    the Maine Lobstermen’s complaint claims the rule is unlawful
    because, they say, it flows from or relies upon the biological
    opinion. The lobstermen sought summary judgment on count
    four, making this argument. The district court held count four
    was “properly pled” and then rejected the claim on the merits.
    Maine Lobstermen’s Ass’n, 
    2022 WL 4392642
    , at *14. On
    appeal, the lobstermen continue arguing the rule should be set
    aside because the rule is allegedly “infect[ed]” by the legal and
    analytical errors in the biological opinion. The lobstermen,
    unlike the Service, have thus preserved their argument.
    In any event, these forfeited arguments are irrelevant to
    count one of the Maine Lobstermen’s complaint, which is
    directed at the biological opinion, not the rule. For purposes of
    count one, it is of no moment that the phase one rule was prom-
    ulgated under the MMPA, not the ESA. The Service’s substan-
    tive rules must always be promulgated under a different law:
    Section 7 does not grant the Service any substantive rulemak-
    ing power in its role as a consulting agency, and “[i]t is axio-
    matic that an administrative agency’s power to promulgate leg-
    20
    islative regulations is limited to the authority delegated by
    Congress.” Bowen v. Georgetown Univ. Hosp., 
    488 U.S. 204
    ,
    208 (1988). This does not, however, affect the plaintiffs’
    standing to sue or the merits of their claim. As we have
    explained, the biological opinion injures the lobstermen not
    because it authorizes the rule (it does not), but because “it has
    a powerful coercive effect on the action agency.” Spear, 
    520 U.S. at 169
    . That coercive effect injures the lobstermen even if
    the rule is a valid exercise of the agency’s discretion under the
    MMPA.
    III. The Merits
    On the merits, we decide whether the Service must (or
    even may) indulge in worst-case scenarios and pick “pessimis-
    tic” values in order to give “the benefit of the doubt” to the
    species. We begin with an overview of the text, structure, and
    history of § 7. We then consider the Service’s arguments.
    A. The ESA Does Not Require a Substantive Presumption
    in Favor of the Species
    Section 7 imposes some duties on the action agency (here
    the Fisheries Division), and other duties on the Service (here
    the Protected Resources Division). The action agency must en-
    sure an action is “not likely to jeopardize the continued exist-
    ence of” a protected species. 
    16 U.S.C. § 1536
    (a)(2). A key
    term limiting this duty is “likely.” 
    Id.
     We give the term its
    “ordinary, contemporary, common meaning.” Food Mktg. Inst.
    v. Argus Leader Media, 
    139 S. Ct. 2356
    , 2362 (2019).
    In 1979, when the term was added to the ESA, “likely”
    meant “probable” or “[i]n all probability.” Black’s Law
    Dictionary 834 (5th ed. 1979). Indeed, elsewhere in the ESA,
    the Service has read “likely” to mean “more likely than not.”
    21
    Alaska Oil & Gas Ass’n v. Pritzker, 
    840 F.3d 671
    , 684 (9th Cir.
    2016). We see no reason to depart from that usage. Section 7,
    therefore, requires the action agency to avoid acts that will
    more likely than not jeopardize a species. No more, and no less.
    In so doing, the action agency must “use the best scientific
    and commercial data available.” 
    16 U.S.C. § 1536
    (a)(2). This
    empirical mandate ensures the law is not “implemented hap-
    hazardly, on the basis of speculation or surmise,” and thus
    “avoid[s] needless economic dislocation produced by agency
    officials zealously but unintelligently pursuing their environ-
    mental objectives.” Spear, 
    520 U.S. at
    176–77.
    So far, we have described the role of the action agency.
    How about the Service? The Service must consult with the
    action agency and provide expert “assistance.” 
    16 U.S.C. § 1536
    (a)(2). The Service must then write an opinion “detail-
    ing how the agency action affects the species.” 
    Id.
    § 1536(b)(3)(A). Lastly, the Service must (“shall”) issue a
    license permitting incidental harm to a species if the Service
    concludes the action or the incidental take “will not” violate § 7
    (and, in the case of endangered marine mammals, 
    16 U.S.C. § 1371
    (a)(5)). 
    Id.
     § 1536(b)(4). The Service’s role is thus a lim-
    ited one. The Service must lend expert assistance to the action
    agency, make a prediction about effects and, if the agency can-
    not reject the null hypothesis (no jeopardy) as unlikely, then
    grant a license. For our purposes, what matters is that the core
    of the Service’s remit in the decisionmaking process is to “form
    a scientific judgment.” Massachusetts v. EPA, 
    549 U.S. 497
    ,
    534 (2007). Nothing in § 7 requires “distorting the deci-
    sionmaking process by overemphasizing highly speculative
    harms” whenever the available data is wanting. Robertson v.
    Methow Valley Citizens Council, 
    490 U.S. 332
    , 356 (1989)
    (holding NEPA does not require a “worst case analysis”).
    22
    Statutory history reinforces this reading of the text. Before
    1979, the ESA provided that agencies must “not jeopardize” a
    protected species. 
    16 U.S.C. § 1536
     (1976). This absolute neg-
    ative proved a blunt instrument. In the famous “snail darter”
    case, the Supreme Court halted work on a dam that had cost
    $100 million (in 1978 dollars) to save “a relatively small num-
    ber of three-inch fish among all the countless millions of spe-
    cies extant.” TVA v. Hill, 
    437 U.S. 153
    , 172 (1978). This waste
    was ordained, held the Court, by the “institutionalized caution”
    of the ESA, which admitted of “no exception.” 
    Id. at 173, 194
    .
    Under this absolute veto, agencies had to “prevent the loss of
    any endangered species, regardless of the cost.” 
    Id.
     at 188 n.34
    (cleaned up). The result was “breathtaking”: A “newly
    discovered species of water spider or amoeba” could spell the
    end of any public or private action touched by the hand of the
    federal government. 
    Id.
     at 203–04 & n.13 (Powell, J., dissent-
    ing). More to the point, under an absolute negative, scientific
    uncertainty could paralyze government, or force industry “to
    spend billions to save one more fish.” Entergy Corp. v.
    Riverkeeper, Inc., 
    556 U.S. 208
    , 233 (2009) (Breyer, J., con-
    curring in part and dissenting in part).
    In 1979, the Congress lightened the load to avoid paralysis.
    Among other changes, the Congress replaced “do not jeopard-
    ize” with the tentative “is not likely to jeopardize,” and re-
    quired “each agency” to rely only upon “the best scientific and
    commercial data available,” not the best data possible. Pub. L.
    No. 96–159, § 4, 
    93 Stat. 1225
    , 1226. This history shows the
    Congress did not want economic activity stopped in its tracks
    whenever complete data was lacking. After all, “[d]ecisions
    regarding endangered species are often characterized by
    insufficient data” and “considerable uncertainty.” Nat’l
    Research Council, Science and the Endangered Species Act
    157 (1995). To say uncertainty is a reason to veto a federal
    23
    action is to say that many valuable activities must cease, even
    if the risk of jeopardy is not “likely,” but speculative.
    B. The Service’s Biological Opinion Was Arbitrary and
    Capricious as Well as Contrary to Law
    On appeal, the Service argues the “relevant text says noth-
    ing about how an agency must handle uncertainties in the data,”
    and this silence means the Service had discretion to do what it
    did here. What is not prohibited, the Service reasons, is permit-
    ted; the only limitation being the highly deferential arbitrary
    and capricious standard of review for agency predictions “at
    the frontiers of science.” Baltimore Gas & Elec. Co. v. Nat.
    Res. Def. Council, Inc., 
    462 U.S. 87
    , 103 (1983).
    We have seen this line of argument before. Without men-
    tioning the case, the agency is, in substance, asking us to adopt
    an “aggressive reading of Chevron [that] has more or less fallen
    into desuetude.” Buffington v. McDonough, 
    143 S. Ct. 14
    , 22
    (2022) (Gorsuch, J., dissenting from the denial of certiorari).
    Under this version of Chevron, “silence” gives an agency wide
    latitude. Loper Bright Enterprises, Inc. v. Raimondo, 
    45 F.4th 359
    , 368 (D.C. Cir. 2022), cert. granted, No. 22-451, 
    2023 WL 3158352
     (U.S. May 1, 2023). But cf. Entergy Corp., 
    556 U.S. at 223
     (“[S]ometimes statutory silence, when viewed in con-
    text, is best interpreted as limiting agency discretion.”).
    The district court bought the gambit, even as it purported
    to avoid a “deference debate.” Maine Lobstermen’s Ass’n,
    
    2022 WL 4392642
    , at *6. The court made only a cursory anal-
    ysis of the text before declaring the question one of policy, not
    law. Id.; cf. Pereira v. Sessions, 
    138 S. Ct. 2105
    , 2120 (2018)
    (Kennedy, J., concurring) (“This analysis suggests an abdica-
    tion of the Judiciary’s proper role in interpreting federal stat-
    utes.”). At the same time, the district court held nothing “com-
    24
    pels the agency’s conservative policy towards resolving such
    scientific uncertainty,” and noted the Service “may revisit that
    policy at any time.” Maine Lobstermen’s Ass’n, 
    2022 WL 4392642
    , at *6; see also Nat’l Cable & Telecomm. Ass’n v.
    Brand X Internet Servs., 
    545 U.S. 967
    , 983 (2005). In effect,
    the district court deferred to the Service’s interpretation under
    Chevron, without saying so.
    There are several problems with this sub rosa Chevron
    argument.
    1. The Service’s litigation position is inconsistent with
    the record
    First, the argument does not line up with what the Service
    said during the agency proceeding. Nowhere in the record does
    the Service admit it was favoring right whales over lobstermen
    for reasons of “policy,” not law. Quite the opposite. When
    answering public comments the Service blamed the Congress,
    insisting that “Congressional guidance on implementation of
    the ESA,”—that is, the legislative history—required it to deal
    in worst-case scenarios because “we need to give the benefit of
    the doubt to the species.” In other words, “need” means must.
    Nor is this the first time the Service has said its hands are tied
    by legislative history. In other biological opinions, the Service
    has similarly claimed its presumption is a “direction from the
    U.S. Congress.” See, e.g., ESA Section 7 Consultation No.
    F/NER/2012/01956 201 (2013), available at https://reposi-
    tory.library.noaa.gov/view/noaa/27911. The Service has even
    enshrined this reading of legislative history in its Endangered
    Species Consultation Handbook 1-7 (1998), https://perma.cc/
    FN22-UXCV, which it expressly followed here.
    For 80 years it has been a clear precept of administrative
    law that an agency action “may not stand if the agency has mis-
    25
    conceived the law.” SEC v. Chenery Corp., 
    318 U.S. 80
    , 94
    (1943). Furthermore, “deference to an agency’s interpretation
    of a statute is not appropriate when the agency wrongly
    believes that interpretation is compelled by Congress.” Peter
    Pan Bus Lines, Inc. v. Fed. Motor Carrier Safety Admin., 
    471 F.3d 1350
    , 1354 (D.C. Cir. 2006) (internal quotation marks
    omitted). Here, the Service misconceived the law, wrongly
    claiming the legislative history of the ESA had ordained—if
    legislative history could ever ordain—a precautionary princi-
    ple in favor of the species. The Service therefore gets no defer-
    ence, and its action cannot stand.
    Indeed, the Service’s legal reasoning was not just wrong;
    it was egregiously wrong. The Service’s argument rested
    entirely upon a half-sentence in the legislative history. This
    “approach is a relic from a bygone era of statutory construc-
    tion.” Food Mktg. Inst., 
    139 S. Ct. at 2364
     (internal quotation
    marks omitted); see, e.g., Citizens to Pres. Overton Park, Inc.
    v. Volpe, 
    401 U.S. 402
    , 412 n.29 (1971) (stating that because
    the legislative history “is ambiguous,” courts “must look pri-
    marily to the statutes themselves to find the legislative intent”).
    Under the Service’s approach, legislative history may supply
    duties that, as the Service now concedes, are not found in the
    enacted law. As the Supreme Court recently said, “We cannot
    approve such a casual disregard of the rules of statutory inter-
    pretation.” Food Mktg. Inst., 
    139 S. Ct. at 2364
    . For “legislative
    history is not the law.” Epic Sys. Corp. v. Lewis, 
    138 S. Ct. 1612
    , 1631 (2018). The reason is obvious; as any high school
    Civics student should know, legislators vote on and the presi-
    dent signs bills, not their legislative history. U.S. Const. Art. I,
    § 7, cl. 2. Legislative history therefore cannot bind the execu-
    tive branch and compel a presumption in favor of the species
    not required by statute.
    26
    The Service says courts have “acknowledged the appropri-
    ateness of giving ‘the benefit of the doubt to the species,’” but
    it cites no persuasive case. In one of the cited cases, the
    Eleventh Circuit announced itself “reluctant to read into the
    words that Congress has enacted as law words that it did not
    enact as law”; but the court ultimately found the purported pre-
    sumption irrelevant because the question was not a close one,
    so there was “no tie” to resolve in favor of the species.
    Miccosukee Tribe of Indians of Fla. v. United States, 
    566 F.3d 1257
    , 1266–67 (2009). As the Eleventh Circuit further
    explained, no appellate court has made anything of this argu-
    ment, and the Ninth Circuit cited this legislative history only in
    a dictum. 
    Id. at 1267
     (discussing Conner v. Burford, 
    848 F.2d 1441
    , 1454 (9th Cir. 1988)). So had the First Circuit. Roosevelt
    Campobello Int’l Park Comm’n v. EPA, 
    684 F.2d 1041
    , 1049
    (1982).
    2. The Service’s change in position is arbitrary and
    capricious
    Second, no deference to the Service’s view of the
    Congress’s allegedly eloquent “silence” is appropriate because
    the agency has oscillated between one view and its opposite.
    See Encino Motorcars, LLC v. Navarro, 
    579 U.S. 211
    , 221
    (2016). Only a few years ago, the Service, revisiting its inter-
    pretive rules, agreed with commenters that “nothing” in the
    ESA required it to use “a ‘worst-case scenario’ or make unduly
    conservative modeling assumptions,” and rejected comments
    arguing it should give the benefit of the doubt to a species by
    evaluating “effects or activities that were possible even if not
    likely.” 
    84 Fed. Reg. 44,976
    , 44,993/2, 45,000/3 (2019). Under
    the Service’s interpretive rules, the “effects of the action” are
    those effects that are “reasonably certain to occur,” a finding
    the Service must make “based on clear and substantial infor-
    mation.” 
    50 C.F.R. §§ 402.02
    , 402.17(b).
    27
    The Service argues that it complied with its interpretive
    rule because it picked the “conservative” outcome or the
    “worst-case scenario” only when there were “two or more rea-
    sonably likely outcomes,” but that is just not so. By the
    Service’s admission, it relied upon worst-case modeling that is
    “very likely” wrong, based upon assumptions the Service con-
    cededly does not believe are accurate. Projections that are
    “very likely” wrong are not reasonably certain to occur. The
    Service’s new approach was therefore a change in position.
    “Agencies are,” of course, “free to change their existing poli-
    cies as long as they provide a reasoned explanation for the
    change.” Encino Motorcars, 579 U.S. at 221. In this case,
    though, the Service displayed no awareness of its own flip flop.
    This was “arbitrary and capricious,” and so the agency’s inter-
    pretation was “unlawful” and “receives no Chevron defer-
    ence.” Id. at 222.
    3. The Service’s biological opinion is contrary to law
    Now set all that aside. Suppose the agency had properly
    preserved its argument for deference and shown awareness of
    its changed position. We would still have to reject the argu-
    ment. Statutory text and structure do not authorize the Service
    to “generally select the value that would lead to conclusions of
    higher, rather than lower, risk to endangered or threatened spe-
    cies” whenever it faces a plausible range of values or compet-
    ing analytical approaches. The statute is focused upon “likely”
    outcomes, not worst-case scenarios. It requires the Service to
    use the best available scientific data, not the most pessimistic.
    The word “available” rings hollow if the Service may hold up
    an action agency by merely presuming that unavailable data, if
    only they could be produced, would weigh against the agency
    action.
    28
    Besides, when the Congress wants an agency to apply a
    precautionary principle, it says so. Consider the Clean Air Act,
    for example, requiring “an adequate margin of safety” when
    the EPA sets air quality standards. 
    42 U.S.C. § 7409
    (b)(1);
    Lead Indus. Ass’n, Inc. v. EPA, 
    647 F.2d 1130
    , 1153 (D.C. Cir.
    1980) (recognizing the “precautionary nature” of the law
    requires the EPA to “err on the side of caution”). The precau-
    tionary principle, taken seriously, can multiply an agency’s
    power over the economy. It allows an agency to regulate or
    veto activities “even if it cannot be shown that those activities
    are likely to produce significant harms.” Competitive Enter.
    Inst. v. Dep’t of Transp., 
    863 F.3d 911
    , 918 (D.C. Cir. 2017)
    (quoting Cass R. Sunstein, Beyond the Precautionary
    Principle, 
    151 U. Pa. L. Rev. 1003
    , 1003 (2003)). That is par-
    ticularly significant because uncertainty is “not unusual in day-
    to-day agency decisionmaking within the Executive Branch.”
    FCC v. Prometheus Radio Project, 
    141 S. Ct. 1150
    , 1160
    (2021). Indeed, it is endemic in the field of health and safety
    regulation. See Richard B. Stewart, Environmental Regulatory
    Decision Making Under Uncertainty, 20 Rsch. in L. & Econ.
    71, 74 (2002) (“Very many environmental problems are . . .
    characterized by uncertainty regarding risks of harm.”).
    The presumption in favor of the species is, like an adequate
    margin of safety, a blunt tool. The presumption significantly
    expands the Service’s veto power, prevents the agency from
    “paying attention to the advantages and the disadvantages” of
    the action, and invites the unnecessary economic dislocation
    wrought by worst-case thinking. Michigan v. EPA, 
    576 U.S. 743
    , 753 (2015). A presumption also ignores that worst-case
    scenarios lie on all sides. It is not hard to indulge in one here:
    ropeless fishing technologies, weak links, inserts, and trawls
    may not work; permanent fishery closures may be the only
    solution. The result may be great physical and human capital
    destroyed, and thousands of jobs lost, with all the degradation
    29
    that attends such dislocations. See, e.g., Stephen Breyer,
    Breaking the Vicious Circle: Toward Effective Risk Regulation
    23 (1993) (“[D]eprivation of real income itself has adverse
    health effects, in the form of poorer diet, more heart attacks,
    more suicides.”). Nor are humans the only casualties of worst-
    case thinking: A presumption in favor of one protected species
    may jeopardize another. See, e.g., Miccosukee Tribe of Indians
    of Fla., 
    566 F.3d at 1262
     (considering the presumption in the
    setting of an agency action that “pits a sparrow against a
    hawk”). We may reasonably expect the Congress at least to
    speak, not to be silent, when it delegates this power to destroy.
    All the more so when the Congress tasks an agency to
    serve as a scientific consultant and permitting authority, not
    with making policy, a task reserved to the action agency. It is
    not the province of a scientific consultant to pick whales over
    people. The Service must strive to resolve or characterize the
    uncertainty through accepted scientific techniques, not jump to
    a substantive presumption that distorts the analysis of effects
    and creates false positives. When the Service applies a substan-
    tive presumption to distort the analysis, the public can have no
    confidence that “economic dislocation” is needed to protect a
    species and is not the result of “speculation or surmise” by
    overly zealous agency officials. Spear, 
    520 U.S. at
    176–77.
    We recognize the Service has a difficult task. Under brute
    uncertainty, the Service may have no way to attach even rough
    probabilities to the range of possible outcomes. See Frank H.
    Knight, Risk, Uncertainty, and Profit 20–21 (1921) (distin-
    guishing “risk” from “true uncertainty,” which is not suscepti-
    ble to measurement). We do not deny this, nor do we require
    scientific reasons or calculated probabilities when no reasons
    or calculations are possible. In most realistic cases, however,
    the Service will be able to make a scientifically defensible
    decision without resort to a presumption in favor of the species.
    30
    When it does so, the Service’s predictions will be entitled to
    deference. If brute uncertainty does make it impossible for the
    Service to make a reasoned prediction, however, the interpre-
    tive rules supply a ready answer: The Service lacks a clear and
    substantial basis for predicting an effect is reasonably certain
    to occur, and so, the effect must be disregarded in evaluating
    the agency action.
    C. The Error Is Not Harmless
    In a last effort, the Service asks us to pay no attention to
    its presumption in favor of the species. According to the
    Service, if we ignore the words the Service used, we would see
    that the agency reasonably evaluated the effects and used the
    best available data. The agency’s outcome, in other words,
    could stand up to scrutiny without a presumption in favor of
    the species.
    We cannot ignore the words the Service used. It is—
    again—a “foundational principle of administrative law that a
    court may uphold agency action only on the grounds that the
    agency invoked when it took the action.” Michigan, 576 U.S.
    at 758 (citing Chenery Corp., 
    318 U.S. at 87
    ). Here, the Service
    announced at the outset that when it made assumptions about
    the known unknowns, it would “generally select the value that
    would lead to conclusions of higher, rather than lower, risk to
    endangered or threatened species.” All of the assumptions the
    Service made are thus tainted by the presumption in favor of
    the species. Some of the assumptions the Service made along
    the way are quite important—as we have explained, the Service
    ultimately concluded the lobster and Jonah crab federal fisher-
    ies kill 46 whale deaths per decade, a staggering departure from
    the two documented deaths known to have originated in all
    U.S. fisheries over a period of nine years.
    31
    This conclusion rests upon uncertain assumptions. Take
    the Service’s decision to allocate half the deaths of unknown
    origin and half of the undocumented deaths to U.S. fisheries.
    This allocation is of great importance to the analysis, but it has
    little empirical support. As shown in the chart above, most doc-
    umented deaths from entanglement of known origin, particu-
    larly in recent years, have happened in Canada. Right whales
    have also migrated away from the Gulf of Maine. Moreover,
    before 2017, Canada did little to survey the Gulf of St.
    Lawrence, where many whales had relocated, so the dataset
    used by the Service may well understate the role of Canada in
    the decline of the right whale population. See Crowe et al., at
    247 (“[S]ubstantial[] undetected mortality of these right whales
    probably occurred in the [Gulf of St. Lawrence] in 2015 and
    2016.”). Or perhaps the detection bias runs in the opposite
    direction, as the Service implies. What matters for our purposes
    is that the Service is making a highly discretionary judgment
    under uncertainty. That judgment may (or may not) be rational
    enough to pass muster under arbitrary and capricious review,
    but that is beside the point. We have no way of knowing how
    the Service would have made this discretionary judgment had
    it not applied a general presumption in favor of the species, so
    we cannot conclude the error was harmless. “To do so would
    propel the court into the domain which Congress has set aside
    exclusively for the administrative agency.” SEC v. Chenery
    Corp., 
    332 U.S. 194
    , 196 (1947).
    IV. The Remedy
    As for the remedy, we follow our “ordinary practice” and
    direct the district court to vacate the biological opinion as it
    applies to the lobster and Jonah crab fisheries. United Steel v.
    Mine Safety & Health Admin., 
    925 F.3d 1279
    , 1287 (D.C. Cir.
    2019). The error in the biological opinion is a serious one and
    vacating the opinion will have no adverse consequences. No
    32
    one disputes the Consolidated Appropriations Act will protect
    the Service and the lobstermen from liability for several years
    while the Service works on a new biological opinion.
    Because the biological opinion covers multiple federal
    fisheries, our relief is limited to the lobster and Jonah crab fish-
    eries. Nat. Res. Def. Council v. Wheeler, 
    955 F.3d 68
    , 81–82
    (D.C. Cir. 2020). We include the Jonah crab fishery because it
    is intertwined with the lobster fishery: most Jonah crab is inci-
    dentally caught in lobster traps.
    The phase one rule presents a different situation. Vacating
    the rule would create significant uncertainty over whether the
    Consolidated Appropriations Act continues temporarily to pro-
    tect the Service and the lobstermen from liability and thus pre-
    vents the closure of the fishery. 
    16 U.S.C. § 1538
    (g) (unlawful
    for a person to “cause to be committed” a “take”); 
    id.
    § 1532(13) (person includes agency employees); id. § 1540
    (penalties). And we are not convinced the error claimed by the
    lobstermen is fatal to the rule. Although the Service has not
    defended the rule during this appeal on independent grounds,
    choosing instead to defend the biological opinion, on remand
    the Service may well be able to explain why the phase one rule
    does not depend upon the validity of the biological opinion. Cf.
    Biden v. Texas, 
    142 S. Ct. 2528
    , 2544–48 (2022) (holding an
    agency may reconsider a decision on remand, provide new rea-
    sons, and reach the same outcome). In any event, the agency’s
    failure to defend the rule here does not limit its ability to
    “return[] to the drawing table” and add explanations to the rec-
    ord when it reconsiders the problem on remand. 
    Id. at 2546
    .
    We therefore remand the phase one rule without vacating it,
    thus allowing the rule “to remain in effect.” North Carolina v.
    33
    EPA, 
    550 F.3d 1176
    , 1178 (D.C. Cir. 2008).4 Because the
    phase one rule remains in effect, the rule continues to be
    “deemed sufficient” under the Consolidated Appropriations
    Act for the lobster and Jonah crab fishery to be “in full compli-
    ance with the [MMPA] and the [ESA].”
    V. Conclusion
    We reverse the district court’s grant of summary judgment
    to the Service and direct the court to enter summary judgment
    for the lobstermen on count one of their complaint. Because the
    Service has raised no independent defense to count four of the
    complaint, we direct the district court to enter summary judg-
    ment for the lobstermen on count four. We further direct the
    district court to vacate the biological opinion as applied to the
    lobster and Jonah crab fisheries and to remand the phase one
    rule to the Service. Because our judgment gives the lobstermen
    all the relief they seek, we do not reach counts two or three of
    their complaint.
    So ordered.
    4
    Our precedent allowing for remand without vacatur has supporters
    as well as critics. Compare Administrative Conference of the U.S.,
    Recommendation 2013-6 (2013) (recommending that “[r]emand
    without vacatur should continue to be recognized as within the
    court’s equitable remedial authority on review of cases that arise
    under the Administrative Procedure Act”), with Nat. Res. Def.
    Council v. EPA, 
    489 F.3d 1250
    , 1262 (D.C. Cir. 2007) (Randolph,
    J., concurring) (“In cases governed by the Administrative Procedure
    Act, I have long believed that the law requires us to vacate the
    unlawful agency rule.”); John C. Harrison, Remand Without Vacatur
    and the Ab Initio Invalidity of Unlawful Regulations in
    Administrative Law, B.Y.U. L. Rev. (forthcoming 2023) (arguing an
    unlawful rule governing private conduct is void ab initio).