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Trans-Pacific Policing Agreement v. United States Customs Service

Court: Court of Appeals for the D.C. Circuit
Date filed: 1999-06-01
Citations: 177 F.3d 1022, 336 U.S. App. D.C. 189
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321 Citing Cases
Combined Opinion
                  United States Court of Appeals

               FOR THE DISTRICT OF COLUMBIA CIRCUIT

        Argued April 29, 1999        Decided June 1, 1999 

                           No. 98-5253

            Trans-Pacific Policing Agreement, et al., 
                            Appellants

                                v.

                 United States Customs Service, 
                             Appellee

          Appeal from the United States District Court 
                  for the District of Columbia 
                         (No. 97cv02188)

     Paul M. Tschirhart argued the cause for appellants.  With 
him on the briefs were

Jeffrey F. Lawrence, Heather Spring and R. Frederic Fisher.  
Cindy G. Buys entered an appearance.

     Kimberly Nelson Brown, Assistant U.S. Attorney, argued 
the cause for appellee.  With her on the brief were Wilma A. 
Lewis, U.S. Attorney, and R. Craig Lawrence, Assistant U.S. 
Attorney.

     Before:   Edwards, Chief Judge, Wald and Rogers, Circuit 
Judges.

       Opinion for the Court filed by Chief Judge Edwards.

     Edwards, Chief Judge:  Trans-Pacific Policing Agreement 
("TPPA" or "appellants"), an association of registered ocean 
common carriers, is charged by federal statute with policing 
exporters who send shipments into the United States. One 
principal function of TPPA is to investigate and take action to 
prevent the mischaracterization of cargo in sealed marine 
containers.  Pursuant to the Freedom of Information Act 
("FOIA"), 5 U.S.C. s 552, TPPA sought shipping code num-
bers from the United States Customs Service ("Customs") in 
order to facilitate investigations of exporters' shipments.  
Customs rejected TPPA's request, claiming that release of 
the code numbers would result in serious competitive injury 
to importers in the United States and, thus, that the informa-
tion sought was exempt from disclosure under FOIA Exemp-
tion 4, id. s 552(b)(4).  TPPA filed suit in District Court, and 
the court granted summary judgment in favor of Customs, 
finding that Customs had met its burden under Exemption 4.

     On appeal, TPPA claims that Customs could have disclosed 
redacted portions of the code numbers without causing com-
petitive harm to United States importers, and that the Dis-
trict Court erred in not making a segregability finding.  
Customs responds that, because TPPA made no request for 
redaction before the District Court, the claims on appeal 
should not be considered by this court and the judgment of 
the District Court should be affirmed.  Because the District 
Court never considered the possibility of redaction, we believe 
that a remand is warranted in this case.

     There is no doubt that appellants could have helped to save 
judicial resources by presenting the full theory of their case 
as effectively before the trial court as it was presented during 
the arguments before this panel.  Nonetheless, we see no 
point in dismissing this lawsuit.  Both sides agree that appel-
lants could and would simply file a new lawsuit if the case 
were dismissed.  And counsel for Customs concedes that 
there is really nothing of substance to be gained by requiring 

appellants to file a new FOIA request at the administrative 
level;  it is also clear that a new lawsuit will be costly in terms 
of additional time, expense, and wasted judicial resources.  In 
these circumstances, we believe that a remand is warranted.

                          I. Background

A.    Factual Background

     TPPA is an association of registered ocean common carri-
ers.  Appellant Nippon Yusen Kaisha is an individual ocean 
carrier, as well as a member of the association.  The associa-
tion was formed pursuant to the Shipping Act of 1984, 46 
U.S.C. app. ss 1701-1720, and is authorized under the Act to 
investigate and take action to correct certain trade "malprac-
tices" prohibited by the Act.  See id. s 1709(a)(1), (b)(1)-(4).  
Among the prohibited malpractices, as relevant here, is the 
mischaracterization of cargo in sealed marine containers, 
which allows unscrupulous exporters to obtain freight rates 
below the lawful filed tariff rate applicable to a particular 
commodity.  On some occasions the ocean carrier is an ac-
complice in violating the law and on other occasions the 
carrier has been defrauded.

     Many foreign exporters shipping goods into the United 
States do so via ocean carrier.  Using information provided 
by the exporter, the carrier prepares an Inward Vessel 
Manifest ("IVM"), which provides a general description of the 
goods contained in each shipment.  See 19 C.F.R. 
s 103.31(e)(3) (1998).  Customs requires the carrier to file the 
IVM upon entry into the United States, but it is usually filed 
before the vessel arrives in port.  The information contained 
in the IVM is regularly released for public distribution under 
Customs regulations.  See id. s 103.31(a)(3), (e).  When the 
carrier provides Customs with the IVM, Customs assigns the 
shipped goods one or more entry numbers.  Each individual 
import transaction receives a unique entry number, which 
Customs then uses for all official purposes.

     When the importer is notified that its goods have arrived, 
Customs requires that the importer--not the carrier--com-

plete an Import Declaration.  On this document, the importer 
must provide detailed information about the shipment, in 
order to enable Customs to, inter alia, assess properly the 
duties that may be due on that shipment.  As part of the 
Import Declaration, the importer must include a Harmonized 
Tariff Number ("HTS number") applicable to the goods.  The 
HTS number corresponds to a specific legal description with-
in the universe of imported merchandise.  The complete list 
of HTS numbers is set forth in the Harmonized Tariff Sched-
ule that the Government publishes each year.  This published 
Schedule is akin to a dictionary, in that it assigns a precise 
definition to each ten-digit HTS number. The definitions are 
highly specific, and may even include the value of the goods.  
For example, Customs has over 1900 different HTS numbers 
for goods that could generally be described as "ready made 
garments."  See, e.g., Appendix ("App.") 246-57.  In general, 
each digit in an HTS number adds an additional layer of 
specificity to the description of the goods, in the same way 
that biologists' use of phylum, order, genus, and species 
identifies living organisms to increasing degrees of specificity.  
Although the Schedule is published annually, Customs nor-
mally does not release information from Import Declarations, 
which apply HTS numbers to specific shipments of goods.

     The IVMs and the Import Declarations each contain similar 
information--a description of the goods being shipped--but, 
as the District Court noted, and as the parties agree, "they 
are very different documents, prepared by different persons, 
and prepared under different circumstances."  Trans-Pacific 
Policing Agreement v. United States Customs Serv., Civ. No. 
97-2188, at 3 (D.D.C. May 14, 1998) (Memorandum Opinion) 
("Memorandum"), reprinted in App. 273.  The IVM is pre-
pared by the carrier, generally with details supplied by the 
exporting shipper.  As noted above, the description of the 
goods contained in the IVM need only be of a general nature.  
By contrast, it is the importer who must file the Import 
Declaration, using the far more precise HTS numbers, which 
provide a description of the shipment that is significantly 
more detailed than the one found on the IVM.  Moreover, an 
importer completes the Import Declaration under penalty of 

law and under the watchful eye of Customs.  Therefore, it is 
undisputed that Import Declarations generally contain a more 
accurate description of the shipped goods than do IVMs--not 
only because the HTS numbers are more precise, but also 
because the importers filling out the Import Declarations 
have less incentive and ability to mischaracterize the ship-
ment than do those filling out the IVMs.

     TPPA enforces the Shipping Act by ensuring that export-
ers do not mischaracterize their cargoes in order to receive 
lower tariff rates.  It is indisputable that access to the HTS 
numbers would greatly facilitate the work of TPPA officials.  
According to appellants, use of those numbers is the easiest 
and cheapest method of checking the accuracy of the descrip-
tions contained in the IVMs, and is therefore the most 
efficient method of enforcing federal law and reducing com-
mercial fraud in the shipping industry.  The alternative--
physically inspecting each shipment--is, according to appel-
lants, expensive, time-consuming, and unduly intrusive of 
honest shippers and importers.  See Appellants' Opening 
Brief at 6-7.

B.    Procedural Background

     On September 25, 1996, appellants wrote to Customs, re-
questing disclosure of "Customs['s] harmonized numbers for 
actual commodity description[s]" of 68 shipments, which ap-
pellants identified by their entry numbers.  See Letter from 
Jay Tolentino, NYK Line, Inc., to Audrey Adams, Customs 
(Sept. 25, 1996), reprinted in App. 15-16.  On October 8, 
1996, Customs responded by refusing to release the request-
ed HTS numbers, claiming in only one sentence that such 
information fell within FOIA Exemption 4, which exempts 
from disclosure "trade secrets and commercial or financial 
information obtained from a person and privileged or confi-
dential."  5 U.S.C. s 552(b)(4);  see Letter from Adams to 
Tolentino (Oct. 8, 1996), reprinted in App. 17.

     On November 12, 1996, appellants appealed Customs's 
initial refusal to the Customs FOIA Appeals Officer.  See 
Letter from R. Frederic Fisher et al., Counsel for Appellants, 
to FOIA Appeals Officer, Customs (Nov. 12, 1996), reprinted 

in App. 20-26.  They explained that the purpose of their 
FOIA request is "to compare the commodity declaration 
made ... to the ocean carrier (as subsequently filed with 
Customs on the [IVM]) with the commodity declaration made 
... directly to Customs [on the Import Declaration]."  Id. at 
2, reprinted in App. 21.  They argued that the requested 
information is no different in kind than the information 
released to the public on the IVMs, but it is more likely to be 
accurate.  According to appellants, then, "[i]f the two com-
modity declarations for the same shipment differ, the only 
... reason for according confidential treatment of the com-
modity declaration to Customs would be concealment of com-
mercial fraud and violations of the Shipping Act."  Id. at 4, 
reprinted in App. 23.  Moreover, appellants noted that local 
Customs field offices had, in the past, provided them with the 
HTS numbers for certain shipments.  See id. (citing Letter 
from Alice M. Rigdon, Customs, to Dan Fetters, Hyundai 
American Shipping Agency (Aug. 14, 1996), reprinted in App. 
18-19).

     On January 16, 1997, the Appeals Officer affirmed the 
initial determination that the requested information fell with-
in Exemption 4, explaining that "Customs has long considered 
information on entry documents to be confidential informa-
tion, exempt from disclosure."  Letter from Marvin Amer-
nick, Customs, to R. Frederic Fisher et al. 2 (Jan. 16, 1997), 
reprinted in App. 28.

     Appellants subsequently filed suit in District Court, and the 
parties filed cross motions for summary judgment.  Without 
acting on appellants' request for oral argument, the court 
granted summary judgment in favor of Customs.  See Memo-
randum at 10, reprinted in App. 280.  The trial court deter-
mined that Customs, by the submission of detailed affidavits, 
had carried its burden and demonstrated that the release of 
the HTS numbers, when linked by an entry number to a 
specific shipment of goods, presented a threat to the competi-
tive position of the importers who provide this information.  
See id. The court also determined that the isolated release of 
HTS numbers in the past by various Customs field offices did 
not affect the disposition of the instant case.  See id. at 9, 

reprinted in App. 279 (citing Medina-Hincapie v. Depart-
ment of State, 700 F.2d 737, 742 n.20 (D.C. Cir. 1983) (holding 
that unauthorized disclosure of documents does not constitute 
a waiver of the applicable FOIA exemption)).  This appeal 
followed.

                           II. Analysis

A.    FOIA Exemption 4

     The Freedom of Information Act requires that federal 
agencies comply with requests to make their records available 
to the public, unless the requested records fall within at least 
one of nine categories of exempt material.  See 5 U.S.C. 
s 552(a), (b).  Pursuant to Exemption 4, FOIA exempts from 
disclosure "trade secrets and commercial or financial informa-
tion obtained from a person and privileged or confidential."  5 
U.S.C. s 552(b)(4).  There is no dispute that the HTS num-
bers requested by appellants are "commercial" and are "ob-
tained from a person," i.e., the importer.  The issue in this 
case is whether the numbers are "confidential."  Where, as 
here, the information is supplied to the agency under compul-
sion, it is treated as "confidential" only if its disclosure is 
likely "(1) to impair the Government's ability to obtain neces-
sary information in the future;  or (2) to cause substantial 
harm to the competitive position of the person from whom the 
information was obtained."  National Parks & Conservation 
Ass'n v. Morton, 498 F.2d 765, 770 (D.C. Cir. 1974) (footnote 
omitted).  Customs did not contend before the District Court, 
nor did it argue on appeal, that disclosure of the numbers 
would impair any Government functions.  Therefore, both 
parties agree that the HTS numbers are exempt from disclo-
sure only if Customs can establish that disclosure is likely to 
cause substantial harm to the competitive position of the 
importers who supplied the information.  We review de novo 
the District Court's grant of summary judgment in favor of 
Customs.  See Troy Corp. v. Browner, 120 F.3d 277, 281 
(D.C. Cir. 1997).

B.    The Merits

     In their briefs to this court, appellants claim that they do 
not need all ten digits of each HTS number in order to 
evaluate the accuracy of the information contained in the 
IVMs.  Rather, they need only enough digits in each number 
to compare, with the same degree of specificity, the informa-
tion provided by the exporters on the IVMs.  In other words, 
TPPA apparently would be satisfied if Customs disclosed 
only, say, four or six digits of each HTS number, and segre-
gated out the remaining digits that provide the highly specif-
ic, confidential information about each shipment.  Customs 
responds that appellants waived this argument for redacted 
disclosure by failing to raise it before the District Court, and 
that, if appellants want to raise the issue of segregability, 
they must do so in a new FOIA petition.  Appellants acknowl-
edge that they did not expressly seek a segregability finding 
in their District Court pleadings, but claim that it never 
occurred to them that Customs was treating their request as 
a request for all ten digits, when it is obvious (at least to 
appellants) that only four or six digits would serve their 
purpose.  Regardless, they argue, both the agency and the 
District Court had an affirmative obligation to consider seg-
regability sua sponte.

     As an initial matter, we note that, in their briefs to this 
court and at oral argument, appellants did not seriously 
dispute the District Court's determination, based on detailed 
affidavits submitted by experienced Customs officials, that 
release of the unredacted ten-digit HTS numbers would likely 
cause importers serious competitive harm.  The affidavits 
submitted by Customs explain precisely how a knowledgeable 
person can, by linking HTS numbers to specific shipments, 
uncover information concerning the nature, cost, profit mar-
gin, and origin of the shipments.  As the District Court held, 
a person could then "use the HTS numbers to unlock some of 
the ambiguities and inaccuracies on the [IVM], and thereby 
gain a picture of an importer's intentions, profit margin, and 
other plans."  Memorandum at 8, reprinted in App. 278.  
Appellants have given us no reason to question the District 
Court's judgment in this regard.  We have no doubt that, 
based on the record before the District Court, Customs met 

its burden under Exemption 4, at least with respect to the 
unredacted ten-digit HTS numbers.

     The issue, then, is whether we should affirm the grant of 
summary judgment and require appellants to file a new, more 
specific FOIA request, or, instead, reverse and remand to the 
District Court for a determination as to whether the HTS 
numbers can be redacted in order to avoid application of 
Exemption 4.  We believe that the latter option is the more 
appropriate disposition of this case.

     FOIA specifically requires that, if a requested record con-
tains information that is exempt from disclosure under one of 
the FOIA exemptions, "[a]ny reasonably segregable portion 
of a record shall be provided to any person requesting such 
record after deletion of the portions which are exempt."  5 
U.S.C. s 552(b);  see Oglesby v. United States Dep't of the 
Army, 79 F.3d 1172, 1176 (D.C. Cir. 1996) ("If a document 
contains exempt information, the agency must still release 
'any reasonably segregable portion' after deletion of the 
nondisclosable portions." (quoting 5 U.S.C. s 552(b)).  "It has 
long been a rule in this Circuit that non-exempt portions of a 
document must be disclosed unless they are inextricably 
intertwined with exempt portions."  Mead Data Cent., Inc. v. 
United States Dep't of the Air Force, 566 F.2d 242, 260 (D.C. 
Cir. 1977).

     In Board of Trade v. Commodity Futures Trading 
Comm'n, 627 F.2d 392, 401 (D.C. Cir. 1980), this court 
described the appropriate procedure for segregating exempt 
material from non-exempt material:

     Procedurally, when faced with a question of Exemption 4 
     coverage, the determining body--agency or court--must 
     first examine the requested documents, with details ... 
     not deleted, and ascertain whether they contain protect-
     ed information.  If, after applying the appropriate tests, 
     the body concludes that all or part of the sought-after 
     material is shielded by this exception to [FOIA], it must 
     then determine whether suitable deletions of identifying 
     or exempt matter may be made which will enable it to 
     reveal the remaining information.  This technique, which 
     
     we have employed in numerous cases, derives from ex-
     press provisions of [FOIA] and its legislative history as 
     well.
     
(citations, footnotes, brackets, and internal quotation marks 
omitted).  Appellants argue that, because the first four or six 
digits of each HTS number contain a description of the 
shipment that is no more specific than the description already 
contained in the publicly-released IVMs, release of those 
digits would not cause the importers any competitive harm.  
However, because it is undisputed that the HTS number 
descriptions are more accurate than the descriptions con-
tained in the IVMs, release of the redacted HTS numbers 
would aid appellants in their public mission and duty to 
combat ocean carrier fraud.  Appellants therefore claim that 
the District Court erred in not following the Board of Trade 
procedure and in not ordering Customs to segregate out the 
digits in each requested HTS number that would provide 
appellants with a greater degree of specificity than they need.  
Moreover, they assert, because Board of Trade places respon-
sibility for reasonable segregation on the agency as well as 
the court, Customs violated FOIA when it did not release the 
first four or six digits of the HTS numbers in the first 
instance.

     Customs responds that the District Court's silence on the 
issue of segregability is perfectly appropriate:  because appel-
lants never raised the prospect of redacted HTS numbers, the 
court had no reason to raise it sua sponte, and this court 
should not consider it now.  See Brief for Appellee at 12-13.  
Customs argues that Board of Trade and s 552(b) do not 
create an affirmative duty on the part of the agency or the 
court to come up with segregability proposals that the FOIA 
plaintiff never even asked for.  Customs also suggests that 
the HTS numbers are not reasonably segregable and that it 
would be unduly burdensome for the agency to do what 
TPPA seeks.

     Customs concedes that each digit in an HTS number 
represents a greater degree of specificity with respect to the 
description of the commodity being imported.  Agency coun-

sel further conceded at oral argument that, if the HTS 
numbers were simply translated into words, they undoubtedly 
would be "records" subject to the normal FOIA rules--
including s 552(b), which requires reasonable segregation.  
Thus, appellants have raised a plausible claim that the HTS 
numbers themselves are also "records" subject to segregabili-
ty under FOIA.  The question is whether appellants were 
required to expressly suggest to the agency or the District 
Court that the agency segregate out the exempt portions of 
these "records."

     In hindsight, under Board of Trade and other circuit 
precedent, and pursuant to s 552(b), we believe that the 
District Court had an affirmative duty to consider the segreg-
ability issue sua sponte.  This court has remanded in numer-
ous cases in which the district court failed to make such a 
finding, although we have never squarely held that the court 
must make a segregability finding even if the issue has not 
been specifically raised by the FOIA plaintiff.  See, e.g., 
Kimberlin v. Department of Justice, 139 F.3d 944, 949-50 
(D.C. Cir. 1998) (remanding to district court, because court 
had not made segregability finding);  PHE, Inc. v. Depart-
ment of Justice, 983 F.2d 248, 252 (D.C. Cir. 1993) ("[A] 
district court clearly errs when it approves the government's 
withholding of information under [FOIA] without making an 
express finding on segregability.");  Schiller v. NLRB, 964 
F.2d 1205, 1209-10 (D.C. Cir. 1992) (remanding to district 
court, where "[b]oth the [agency] and the district court 
appear to have overlooked the segregability requirement," 
and where the "district court did not hold the [agency] to its 
obligation to disclose reasonably segregable information");  cf. 
Powell v. United States Bureau of Prisons, 927 F.2d 1239, 
1242 n.4 (D.C. Cir. 1991) (" '[I]t is error for a district court to 
simply approve the withholding of an entire document without 
entering a finding on segregability, or the lack thereof.' " 
(quoting Church of Scientology v. Department of the Army, 
611 F.2d 738, 744 (9th Cir. 1979)).  Moreover, appellants' 
failure to raise segregability certainly was not a knowing 
waiver of that argument.  At most, it raised the possibility of 
a mere forfeiture.  See University of the Dist. of Columbia 

Faculty Ass'n/NEA v. District of Columbia Fin. Responsibil-
ity and Management Assistance Auth., 163 F.3d 616, 625 
(D.C. Cir. 1998) (citing United States v. Olano, 507 U.S. 725, 
733 (1993)).  In short, a remand in this case is consistent with 
s 552(b) and the aforecited cases.

     Furthermore, Customs concedes that, if the case were 
dismissed, appellants could file another, more specific FOIA 
request, asking for as many digits in the HTS numbers as 
Customs could release without risking competitive harm.  If 
the agency chose to challenge this hypothetical new request 
under Exemption 4, the issue would then be presented to the 
district court (and possibly this court).  Agency counsel con-
ceded at oral argument that Customs had nothing of sub-
stance to gain by requiring appellants to file a new FOIA 
request at the administrative level.  Thus, as a matter of 
judicial economy and pursuant to our very broad remedial 
authority, see 28 U.S.C. s 2106, it makes sense to remand so 
that the District Court--which is already familiar with the 
record in this case--can supplement the record and make 
factual findings in the first instance on appellants' claims.  
See Senate of the Commonwealth of Puerto Rico v. United 
States Dep't of Justice, 823 F.2d 574, 580 (D.C. Cir. 1987) 
("[T]he interests of judicial finality and economy have special 
force in the FOIA context....") (citation and internal quota-
tion marks omitted);  Marks v. CIA, 590 F.2d 997, 1004 n.5 
(D.C. Cir. 1978) (Wright, C.J., concurring and dissenting) 
(noting that "[d]elay ... is particularly inappropriate in a 
FOIA suit").  This reasoning holds especially true where the 
agency gives us no good reason not to remand.

     In support of its position that appellants should be required 
to file a new FOIA request, the agency cites only American 
Federation of Government Employees, Local 2782 v. United 
States Department of Commerce, 907 F.2d 203 (D.C. Cir. 
1990) ("AFGE").  In that case, appellants, for the first time 
on appeal, offered to narrow their FOIA request.  We de-
clined to evaluate the newly-narrowed request de novo, be-
cause

     [i]t is our office ... to review the decision of the district 
     court in the case that the appellants, having duly ex-
     hausted their administrative remedies, there presented 
     for decision;  it is distinctly not our role to pass de novo 
     upon a request for disclosure that is narrower than the 
     request that was presented to the agency.
     
Id. at 208.  Our decision to remand in this case is in no way 
inconsistent with the court's disposition in AFGE, because 
appellants here are not asking this court to decide de novo 
whether redacted HTS numbers fall within Exemption 4.  As 
the court stated in AFGE, we are in no position to evaluate a 
claim for which no record has been established in the district 
court.  For example, we have no way of knowing whether the 
disclosure to appellants of only four digits would cause sub-
stantial harm to the competitive position of the importers.  It 
is perfectly within our remedial authority, however, to re-
mand to the District Court so that a record can be made on 
this issue, particularly when agency counsel conceded that 
nobody's interests would be served by forcing appellants to 
pursue their request again at the administrative level.

     As noted above, our disposition in this case is fully consis-
tent with previous FOIA cases in which this court has re-
manded for further development of the record in light of 
matters that did not arise until the case was in this court on 
appeal.  See, e.g., Sinito v. United States Dep't of Justice, No. 
98-5227, slip op. at 6, 8 (D.C. Cir. May 18, 1999) (holding that 
a cause of action under FOIA survives the death of the 
original requestor, as long as the substitute requestor is 
found to be the original requestor's legal representative un-
der Rule 25 of the Federal Rules of Civil Procedure).  In 
Sinito the court noted

     the government's acknowledgment in oral argument that 
     Rule 25 substitution would not create extra work on the 
     government's part or otherwise impede its interests.  
     Indeed, it would seem to us more expeditious from the 
     government's point of view to allow the appeal to be 
     pursued on the record already made than to begin the 
     process all over again with a new requestor.
     
Id. at 9.  Similarly, in National Parks, after conclusively 
defining for the first time the term "confidential" as used in 
Exemption 4, we remanded to the district court for a determi-
nation as to whether the requested information fell within this 
newly-minted definition.  See 498 F.2d at 770-71;  see also 
Lepelletier v. FDIC, 164 F.3d 37, 48-49 (D.C. Cir. 1999) 
(refining test for nondisclosure under Exemption 6, and re-
manding to district court for factual determination in accor-
dance with reformulated test);  cf. Lehrfeld v. Richardson, 132 
F.3d 1463, 1467 (D.C. Cir. 1998) (upholding agency's nondis-
closure where plaintiff had failed to expressly invoke FOIA in 
his initial request, and holding that "it would be futile to 
require [plaintiff] to file a new request expressly invoking 
[FOIA]" where it was clear that the documents sought were 
exempt from disclosure).

     In short, the decision in AFGE does not state a binding 
rule of law that forecloses remand in a case of this sort.  
Quite the contrary, as the case law shows, and as s 552(b) 
requires, this court has not hesitated to order further pro-
ceedings before the district court on remand to fairly resolve 
claims under FOIA.  There is certainly no doubt that the 
validity of Exemption 4 to block release of the HTS numbers 
was the issue before the District Court.  Understandably, due 
to the somewhat peculiar nature of the information sought--a 
numerical code in which the numbers represent increasing 
degrees of specificity--the District Court did not make a 
segregability finding, as s 552(b) and Board of Trade require.  
In any event, pursuant to s 552(b) and Board of Trade, we 
exercise our authority to remand.

                         III. Conclusion

     For the reasons stated above, the judgment on appeal is 
reversed and the matter is remanded to the District Court for 
the purpose of determining whether disclosure of redacted 
HTS numbers poses a likelihood of substantial harm to the 
competitive position of the importers from whom the numbers 
were obtained.

                                                      So ordered.