United States v. Lachman

                UNITED STATES COURT OF APPEALS
                            UNITED STATES COURT OF APPEALS
                    FOR THE FIRST CIRCUIT
                                FOR THE FIRST CIRCUIT
                                         

No. 94-2005

                  UNITED STATES OF AMERICA,

                          Appellant,

                              v.

         WALTER L. LACHMAN, MAURICE H. SUBILIA, JR.,
       FIBER MATERIALS, INC., MATERIALS INTERNATIONAL,

                    Defendants, Appellees.

                                         

         APPEAL FROM THE UNITED STATES DISTRICT COURT

              FOR THE DISTRICT OF MASSACHUSETTS

       [Hon. Douglas P. Woodlock, U.S. District Judge]
                                                                 

                                         

                            Before

                   Selya, Boudin and Stahl,

                       Circuit Judges.
                                                 

                                         

   James  D. Herbert,  Assistant United  States Attorney,  with
                                
whom Donald K. Stern, United States Attorney, and Despena Fillios
                                                                           
Billings, Assistant United States Attorney, were on brief for the
                  
United States.
   Nicholas  C.  Theodorou with  whom Anthony  Mirenda, Michael
                                                                           
Boudett,  Foley, Hoag  &  Eliot, Bruce  A.  Singal and  Ferriter,
                                                                           
Scobbo,  Sikora, Singal, Caruso  & Rodophele were  on joint brief
                                                      
for appellees. 

                                         

                      February 23, 1995
                                         


     BOUDIN, Circuit Judge.   This is an interlocutory appeal
                                      

by  the  government under  18  U.S.C.     3731 contesting  an

evidentiary ruling  made prior to  trial in a  criminal case.

In the  challenged ruling,  the district court  excluded from

the  government's   case-in-chief   13  exhibits   that   the

government  deems  of great  importance.    Finding that  the

district  court did  not  abuse the  discretion it  possesses

under Fed. R. Evid. 403, we affirm.

                              I.

     On July 8,  1993, a  grand jury  returned an  indictment

charging that  four named defendants conspired  to (count I),

and did in fact (count II), violate the Export Administration

Act of 1979 ("the Export Act"), 50 U.S.C. App.   2410(a), and

its  implementing  regulations.    The  defendants  were  two

corporations--Fiber  Materials,  Inc.,  and   its  subsidiary

Materials International--and the  two top executive  officers

of the companies: Walter L.  Lachman and Maurice H.  Subilia.

The  "facts"  that follow  largely  reflect the  government's

allegations (as yet unproved).

     Fiber Materials  has been  engaged for 25  years in  the

production   of  composite   materials  for   industrial  and

aerospace  applications.   Most  of its  business relates  to

technology  for the manufacture  of carbon/carbon, a category

of materials that can  be made to withstand intense  heat and

pressure.  Over  two-thirds of Fiber  Materials' work is  for

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the  U.S.  military.    Materials International  markets  its

parent   company's   materials,  technologies   and  services

overseas.

     One  of the  technologies  in which  Fiber Materials  is

expert relates to  the hot  isostatic press; the  press is  a

complex  piece  of  industrial  equipment  that  contains  an

internal  cavity  and uses  high  pressure gas  or  liquid to

subject  materials  to  intense  pressure and  a  furnace  to

produce extreme  heat.   Carbon/carbon,  when "densified"  by

this process, becomes suitable  for use in rocket components,

including  ballistic missiles with nuclear capability.  Fiber

Materials generally subcontracts the manufacture of equipment

such as the press to others but provides the expertise.

     In 1984,  the Indian  government's Defense  Research and

Development  Laboratory  ("the  Indian  Defense  Laboratory")

issued  a request  for  proposals to  outfit a  carbon/carbon

facility in India for use in rocket  and missile development.

Fiber Materials won  the bid  and in 1985  signed a  contract

with  the  Defense  Laboratory.    Among  other  things,  the

contract called for Fiber Materials to supply a hot isostatic

press  with a  cavity 26  inches in  diameter, and  a control

panel  for the press; such a panel contains controls to heat,

pressurize and otherwise operate the press.  

     Under the Export Act, various goods and technologies are

subject to different  levels of export control for reasons of

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foreign policy, national security or scarcity.   As one facet

of this regime,  the Commerce Department maintains a  list of

commodities that  may not  be exported without  an individual

license.   Item ECCN 1312A on this  list, as the list existed

in  the late  1980s,  covered hot  isostatic  presses with  a

cavity  diameter of  5  inches or  more and  any "components,
                                                       

accessories and controls" that  were "specially designed" for

such presses.  Export to any country except Canada required a

license;  and the  stated  reasons for  the restriction  were

"national  security" and  "nuclear  non-proliferation."    15

C.F.R.      399.1,   Supp.  1   (1988)  (later   revised  and

renumbered).    

     In January 1987, Fiber  Materials and the Indian Defense

Laboratory  modified  their  contract   to  call  for  a  hot

isostatic  press with a cavity  diameter of 4.9  inches and a

control panel for  the press.   According to the  government,

Subilia wrote to the Indian Defense Laboratory  to assure the

laboratory that  the control panel  to be supplied  under the

new contract could in  the future be used  with a larger  hot

isostatic  press.    In   early  1987,  the  defendants  were

allegedly told by the government  that certain other items in

their  contract,  which required  individual  licenses, would

probably not be licensed because of security concerns.

     In March  1988, Materials International  entered into  a

contract with  the Indian  Defense Laboratory  to have a  hot

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isostatic press with a cavity diameter of 26 inches made by a

third  party  in Switzerland  (which  did  not prohibit  such

exports)  and shipped  directly  to India.    A month  later,

defendants exported  the original 4.9 inch  press, along with

its control  panel, from the  United States to  India without

seeking  or receiving a Commerce Department  license.  A year

and a half later, the 26 inch press was sent from Switzerland

to India.   In 1991  and 1992, defendants  sent employees  of

Fiber  Materials  to  India  to install  the  equipment  and,

specifically, to  connect the U.S.-made control  panel to the

large Swiss-made hot isostatic press.  

     On July  8, 1993, the  four defendants were  indicted in

two counts  for knowingly conspiring to  violate, and knowing

violation  of, the Export Act and its regulations.  15 U.S.C.

App.   2410(a).  The commodity whose export was claimed to be

unlawful was not the 4.9 inch press but the control panel.

                             II.

     Pretrial proceedings were extensive.   In June 1994, the

district court set trial  to begin on July 25 and ordered the

government  to  provide  a   list  of  proposed  exhibits  to

defendants by July 1.  On July 1, the government filed a very

lengthy list of exhibits.  On July 19, the defendants filed a

motion in  limine aimed at  excluding many of  these exhibits
                             

relating to the alleged  "end use" of the exported  items for

missiles and nuclear weapons.   The government then discarded

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many  of  its exhibits  but opposed  the exclusion  of others

objected to  by  defendants.    In  the  meantime  trial  was

deferred until August.

     Perceiving  that  judgments  about  relevance  might  be

affected by the scienter  instructions at trial, the district

court addressed that issue.  With the government acquiescing,

the  court  ultimately  adopted  the  defendants'  theory  of

intent:  the  court  held  that the  "knowing[]  violat[ion]"

requirement  of  50  U.S.C.   App.     2410(a)  required  the

government to prove that the defendants knew that the control

panel required an individual  license.  Compare United States
                                                                         

v.  Gregg, 829 F.2d 1430, 1437 (8th Cir. 1987) (imposing such
                     

a knowledge requirement) with United States v. Shetterly, 971
                                                                    

F.2d 67,  73 (7th Cir. 1992)  (rejecting it).  This  issue is

not before us, and we express no view upon it.  

     The district court held a hearing on August 3 and, in an

oral ruling,  excluded 13  of the governments'  exhibits from

use in its  case-in-chief.   As to nine  other exhibits,  the

court declined to  rule before the  exhibits were offered  at

trial, but it expressed  "intense skepticism" about admitting

some of them.   The government voluntarily  withdrew 21 other

challenged exhibits.   Although the excluded exhibits  number

13, they actually comprise four different collections, one of

which accounts for 10 of the exhibits:

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     The  first (gov. ex. EK) is a 121-page file belonging to

the Institute  for Defense Analysis, a  U.S. industry working

group  that  assists  the  Defense Department  with  its  own

program  to identify  militarily critical technologies.   The

defendant  Subilia was a member  of the group.   The 121-page

file  contained records  of working  group meetings  in 1985.

The records  indicate that  at one meeting  Subilia attended,

carbon/carbon was  discussed  and a  copy of  ECCN 1312A  was

distributed.  The file  contains many references to munitions

and   weapons,  and   considerable   material   relating   to

commodities not at issue in this case.

     The  second file  of  excluded documents  (gov. exs.  DW

through EF)  consists of 10 newspaper clippings  found in the

files of Materials International.  These articles discuss the

Indian government's  "AGNI" missile  program.  None  refer to

hot isostatic presses or  their control panels.  All  but one

of the articles are dated in 1989, more than a year after the

export of  the control panel  in this case.   Each of  the 10

newspaper articles was designated as a separate exhibit.

      The  third (gov.  ex.  AA1 through  5)  is a  group  of

documents  comprising  defendants' registrations  and renewal

applications  filed  with   the  State   Department.     That

department  maintains its own  "munitions" list of controlled

exports,  a   list  distinct   from  that  of   the  Commerce

Department.   The State  Department list  does not cover  hot

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                                         -7-


isostatic presses  or their control panels.   The defendants'

filings   with  the  State   Department  pertained  to  their

activities as exporters of carbon/carbon.   The  documents do

identify the U.S. military as customers of Fiber Materials.

     The  fourth   (gov.  ex.  AE)  is   the  Indian  Defense

Laboratory's 1984 request for proposals for the carbon/carbon

processing  facility.  This was  the proposal for which Fiber

Materials submitted  the winning  bid; as earlier  noted, the

original  arrangement for  a larger  hot isostatic  press was

modified in 1987 to call for one of 4.9 inches.   The exhibit

indicates that  the Indian  carbon/carbon  facility would  be

used in connection with rocket and missile development.

     The  district  court's   reasons  for  excluding   these

exhibits  have to  be discerned  from the  transcript of  the

hearing  on August  3,  a hearing  that  embraced issues  and

documents in addition  to the 13 exhibits now in dispute.  In

excluding the 121-page file, the  court referred to Rule  403

and   called  the   materials   duplicative,  redundant   and

potentially  misleading.   The State  Department registration

papers were described  more briefly  in the same  terms.   In

excluding the 1984 request  for proposals, the district court

called it "preliminary."  

     We  think that  a fair  reading of  the transcript  as a

whole indicates that the trial court thought that some of the

material in  the  13  exhibits was  irrelevant  and  some  of

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                                         -8-


marginal relevance; that it saw in the references to missiles

and  nuclear weapons a potential for jury prejudice; and that

it was concerned also,  in the case of the  121-page document

and the State  Department materials, with  a problem of  jury

confusion because  of the references to  materials other than

the press  and controls at  issue and  references to  regimes

other than the Commerce Department licensing controls. 

     At  the same  time, in  the course  of the  hearing, the

district court  told the defense that the government would be

given some latitude  to present to  the jury the  defendants'

"familiarity  with  the   regime  of  regulation"   and  "the

resistance that the Government may have to allowing awards of

licenses in an  area of  some sensitivity."   This, said  the

court, followed  from the  defendants' own success  in making

knowledge  of  the  legal  restrictions  an  element  of  the

government's case.   The court concluded  by warning that  "I

haven't finally ruled on this issue."

     On August  5, the government asked the district court to

reconsider its exclusion  of the  13 exhibits  and the  court

denied the  motion.   The government then  announced that  it

would appeal the  court's ruling, and the  trial scheduled to

begin three days later was continued indefinitely.  A further

request by the government to the district court to reconsider

its ruling also failed.  This appeal ensued.

                             III.

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     Certain types of exclusionary rulings  in criminal cases

are  commonly  made before  trial,  such  as  rulings on  the

validity  of a search and  seizure or the  voluntariness of a

confession.  In most other cases, judges are hesitant to rule

finally on  evidentiary questions in  advance of trial.   The

role and  importance of the  disputed evidence, its  fit with

other  evidence in the case,  and even the  precise nature of

the evidence may all be affected by, or at least more clearly

understood within, the context of the trial itself.

     At  the same  time, determining  the admissibility  of a

piece of evidence may sometimes require a potentially lengthy

factual  inquiry (e.g.,  whether  a new  class of  scientific
                                  

evidence is  admissible).   Or  the entire  structure of  the

case, and  the parties' preparations,  may turn on  whether a

central piece of  evidence is  to be admitted.   Thus,  while

caution needs  to be exercised, trial  judges have discretion

to make purportedly final advance rulings to admit or exclude

evidence.   We  say "purportedly"  because judges  in ongoing

proceedings normally have some  latitude to revisit their own

earlier rulings.

     In this  case, neither  side disputes that  the district

court was  entitled to rule in  limine on the 13  exhibits in
                                                  

question.   The only question is whether the court abused its

discretion under Rule 403  in determining that these exhibits

should be excluded.   The government admits that the standard

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of  appellate review as to such rulings is deferential to the

district court,  but says  that discretion is  not unlimited.

It is  certainly true  that essentially  legal issues  may be

embedded  in  such a  decision; and  we  agree that  even the

exercise  of  discretionary  judgment  is  subject  to  outer

limits.  See United  States v. Roberts, 978 F.2d 17,  21 (1st
                                                  

Cir. 1992).  

     Rule 403  calls  upon the  district court  to weigh  the

probative  value of  evidence against  the harms that  it may

cause--unfair  prejudice,  confusion,  misleading  the  jury,

delay  or  repetition--and to  exclude  the  evidence if  the

probative value is "substantially  outweighed" by the  harms.

The government does not argue that the trial judge  misstated

Rule 403 or  misunderstood the factors; rather,  the claim is

that the  court struck the wrong balance.   One can start the

analysis at either end of the  balance scale.  In this  case,

it is convenient to begin  our discussion with the  probative

value of the evidence in question.

     Normally,  in order  to have  probative  value, evidence

must  be "relevant" under  Fed. R. Evid. P.  401, that is, it

must  tend  to  make  an  issue  in  the  case  ("a  fact  of

consequence") more or  less likely than  would be so  without

the evidence.   United States  v. Tavares, 21 F.3d  1, 5 (1st
                                                     

Cir.  1994)  (en  banc).   Other  factors  that  may bear  on

probative value are the importance of the issue and the force

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of the evidence.  22 C. Wright & K.  Graham, Federal Practice
                                                                         

and  Procedure   5214 (1978).  In this case, the government's
                          

most difficult problem throughout has been explaining why and

how the exhibits in question are relevant to an issue  in the

case.

     The core of the  charges in the indictment are  that the

defendants knowingly  agreed to,  and did  in fact, export  a

commodity   that  requires  an   individual  license  without

obtaining  such  a  license.   A  commodity  requires  such a

license if it appears on the Commerce Department list of such

commodities.   See 50  U.S.C. App.     2403(b), 24049(a);  15
                              

C.F.R.   372.2(b)(1) (1988).   The listed item in question--a

specially designed control  panel--is described primarily  in

terms of  its relationship to another,  technically described

item  (a hot  isostatic press with  a cavity  of 5  inches or

more).  The end use of the products to be made by the control

panel and press is not an explicit element in the definition.

     By contrast, the most  prominent feature of the exhibits

in question--and the aspect  most objected to by defendants--

is their tendency to  show that the control panel  might well

be  used  to foster  the  development  of weaponry  including

nuclear  missiles.   This  is the  gist  of the  10 newspaper

clippings concerning  the  Indian government's  AGNI  missile

program.    Military  uses  of  the  carbon/carbon  materials

produced  by the hot isostatic  press are one  subject of the

                             -12-
                                         -12-


121-page  file.   The  State  Department  registration papers

serve to  associate Fiber Materials with  military projects. 

The  1984 request  for  proposals suggest  that the  original

larger press was sought for missile development.

     The  government seeks  to connect  the offense  with the

exhibits primarily by arguing that the evidence helps to show

scienter.  The government here has acquiesced in a stringent,

and  relatively  rare,   instruction  that--to  make  out   a

violation--the defendants must not  only have known what they

did,  but also have known  that it was  forbidden.  Where the

offense  is one  grounded  in technical  regulations and  the

conduct not  inherently likely to be  unlawful--the legal tag

is malum prohibitum--this  burden will often  be a heavy  one
                               

for the government.

     Although the  government's brief does not  spell out the

connections systematically,  we  think that  such a  scienter

requirement might  arguably make portions of  the exhibits in

question relevant  in several  different ways.   The broadest

utility would be  to suggest that,  knowing of the  potential

military  use  of  the  press  and  the  Indian  government's

interest in such  a use,  the defendants had  more reason  in

prudence,  and were  therefore more likely  in fact,  to have

reviewed  and considered the general state of the law and the

specific regulations governing the export of the commodity.

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                                         -13-


     Of course, a  jury might  assume that a  company in  the

business of  high-tech  developments and  their export  would

make itself aware  of the pertinent export  regulations.  But

the government is expected to prove each separate element  of

the offense  beyond a  reasonable doubt; and  where knowledge

must be  proved by inference,  the government is  quite right

not to  take a  casual view of  its burden.   The  skull-and-

crossbones  insignia on  the medicine  bottle does  not prove

that the  defendant read the small print instructions; but it

does tend to increase the likelihood.

     Two other, more specific uses have been suggested by the

government for certain materials in the exhibits: to show, in

the  case of  one  page  in  the 121-page  compilation,  that

Subilia was given a copy of item ECCN 1312A; and to indicate,

by  showing  who  signed  the State  Department  registration

papers,  which  persons  in  the  corporate  defendants  took

responsibility for compliance.  These uses, however, could be

satisfied  by  far  less  the  full  offerings  made  by  the

government--the  item  page  in   the  former  case  and  the

signature  page   in  the   latter,  together   with  context

testimony.

     Lastly, the government's brief suggests  or implies that

the  exhibits (especially  the  news clippings  and the  1984

request  for proposals)--by  implicating the  likely military

end uses  of the  larger press  and control panel--support  a

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                                         -14-


double proposition:   that the Commerce  Department would not

have granted  a license for the control panel in this case if

a license  had been  sought, and  that the  defendants (being

aware of  the exhibits) knew this to  be true.  This argument

raises the subtlest problem in the case.

     The defendants say indignantly  (and correctly) that the

crime charged relates to exporting listed commodities without

a license,  not to exporting commodities  that the government

would decline to license.  Put differently, if a commodity is

not  listed,  its export  does  not violate  this  statute no

matter how vehemently the government objects to its export or

how   swiftly  it  would  deny  a  license  if  asked.    The

government's  opening brief  is so framed  as to  invite this

response  and to make it  difficult to tell  what other, more

defensible use of the double inference might be available.

     The government's  reply  brief, however,  offers  (in  a

lengthy  footnote)  two  rebuttal  arguments.   One  is  that

defendants' knowledge that a  license would likely be refused

helps,  as part of a pattern of  other evidence, to show that

the defendants' failure to  apply for the license was  out of

design and not a mistake of law.  The other is that the known

intended  end use has some  bearing on the  purpose for which

the control panel  was designed  and thus on  whether it  was

"specially  designed" for use with a  larger press; this last

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                                         -15-


argument, needless to  say, turns  partly on  how the  phrase

"specially designed" is to be read.

     Against these  arguments for  relevance must be  set two

major  concerns  voiced by  the  district court.    The first

involves  the   likelihood  of  undue  prejudice,  which  the

district  judge summed up by  saying that he  would not allow

this  to become  a  missile case.    Evidence is  not  unduly

prejudicial merely because  it tends toward conviction;  most

useful evidence for the government does that.  The concern is

with any pronounced  tendency of evidence  to lead the  jury,

often for emotional reasons, to desire to convict a defendant

for reasons other than the  defendant's guilt.  United States
                                                                         

v. Moccia, 681 F.2d 61, 63 (1st Cir. 1982).  
                     

     In this case the  district court had every reason  to be

alert  to  this  possibility.     The  government's  disputed

exhibits  (apart from  the State  Department papers)  tend to

suggest that  the  defendants knew  that they  were aiding  a

project  to  develop   missile  technology  for   the  Indian

government.    We  can  ignore,  for  present  purposes,  the

arguable chronological flaw in  relying on the nine clippings

that post-date the exports  in question (and the government's

interesting   counter-argument).     The  1984   request  for

proposals,  the 121-page compilation  and the  earliest press

clipping are potent enough.

                             -16-
                                         -16-


     A jury, conscious of  the risks of nuclear proliferation

and of  U.S.  government efforts  to  halt it,  could  easily

regard the defendants' alleged conduct as highly unattractive

even if it turned out to be technically legal.  Other aspects

of the defendants'  conduct (the 4.9 inch  figure, the export

from  Switzerland) could  reinforce  the adverse  impression.

Any  effort to  dwell at  length on  the  Indian government's

nuclear  missile program and  potential use of  the press and

control  panel in  this  case risks  throwing  gasoline on  a

flickering flame.   A judge  would be blind  not to see  this

danger and to fear it.

     Prejudice  is  not the  only threat.    There is  also a

potential for confusing and misleading the jury.  Quite apart

from prejudice, there is a risk that an undue emphasis on the

end  use of the exported commodities  could divert the jury's

attention  from whether the commodity  is listed and known to

be so, to  whether the commodity is  to be used for  military

purposes.   This  deflection might  seem like a  gross error,

fairly  easy to guard against  in the instructions  so far as

confusion is concerned (prejudice is a different matter); but

it is not the only problem.

     As our  discussion has already shown,  the government is

interested in  proving the  known and intended  military uses

not  only  to  support  its  skull-and-crossbones  theory  of

heightened  awareness but  also to  show that  the government

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                                         -17-


would  have  denied  a  license.    This,  in  turn,  invokes

arguments  as to  how this  alleged fact--at  first seemingly

irrelevant  to  the offense  of  not  asking for  a  required

license--may help the government  show scienter and even help

it  show  why the  control panel  should  be deemed  a listed

commodity.  These arguments, raised tersely in the government

reply brief, may or may not have some basis in law and logic.

     What is clear is that ample opportunity  exists for jury

confusion if exhibits are justified and used in order to show

that  the government  would not  have issued  a license.   It

would be quite a task  to explain to a jury that  this "fact"

is  not an  element  in the  violation but  merely part  of a

subtle and debatable chain of inferences designed to use this

license  denial to  show scienter  and, more  doubtfully, the

character of the control  panel.  We ourselves have  had some

difficulty  disentangling  the  government's  theory  of  the

offense from these more recherche relevance arguments.

     What we have said so far is that the district court  was

balancing claims in which  there was weight on both  sides of

the scale.  The evidence in question has some relevance--most

clearly  on  the  skull-and-crossbones theory;  but  (putting

aside the single document page quoting item ECCN 1312A) it is

not direct  evidence of knowledge  of the law.   At  the same

time, the  risks of undue  prejudice are  quite evident;  and

risks of confusion are real too, especially if the government

                             -18-
                                         -18-


is  allowed to develop and argue  some of its more subtle and

questionable inferences.   This dual threat  of prejudice and

confusion is  alone enough  to lend  support to  the district

court's decision.

     Our  discussion  thus  far  has  not  touched  upon  the

government's need  for this evidence and  the closely related
                             

question  of alternatives available to  it.  In applying Rule

403, it  is  plainly pertinent  whether a  litigant has  some

alternative way to establish  a fact that involves no  (or at

least  a lesser) risk of prejudice or confusion.  22 Wright &

Graham,  supra,    5214  (citing cases).    But here,  in  an
                          

interlocutory appeal, we do not know very much about how else

the  government   might  at  trial  seek   to  establish  the

defendants' knowledge of the  regulatory regime and the finer

shades of its likely interpretation.

     What  we do know is that the district court thought that

the government did have some less dangerous,  if perhaps less

potent,  means of  establishing  the defendants'  familiarity

with the regulations and with the delicacy of their position.

As already noted, the court said that it was prepared to give

the  government some  leeway in  this area.   One  can hardly

doubt that some evidence is available:  merely as an example,

the selection of a 4.9 inch figure for the  press pretty much

shows  that someone in the organization  knew about item ECCN

1312A.

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     We think that the  district court further showed  a wise

flexibility  in two other respects.  It limited its exclusion

of the 13  exhibits in question to  the government's case-in-

chief, knowing  that positions taken or  testimony offered by

the defense might warrant  the court in relaxing the  ban for

purposes of cross-examination or  rebuttal.  On a substantial

number of other exhibits objected to by defendants, the court

reserved  its  ruling,  most  likely until  the  evidence  is

actually  offered at  trial.   The  court's  exclusion of  13

exhibits  certainly  did  not  reflect  a  heavy-handed   and

inflexible constraint.

     We turn  finally to a  narrow concern that  bolsters the

district court's decision  on one remaining  open point.   In

the 121-page file a  copy appears of item ECCN  1312A itself.

Unlike  much of the excluded material,  this page is directly

pertinent  to  the  knowledge  of  at  least  one  individual

defendant as to  the existence  of this item,  and one  might

think  that this part  of the exhibit  ought to have  made it

through the filter.   The  government mentions  the page  but

lays no special stress upon  it.  Perhaps it does not  expect

the  defendants  to   deny  that  they  were   aware  of  the

regulations.

     The  district court expressed  concern that this exhibit

as a whole  was a  jumble of material,  some rather  patently

unrelated  to anything in this case.  The government had, and

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presumably  still  has, the  option  of  identifying specific

pieces  of information in the exhibit and urging that they be

considered separately  from the rest.   Without  generalizing

too  broadly, it  is  normally the  case  that this  kind  of

segregation is the job of counsel and not an already burdened

district judge.  See Brooks v. Chrysler Corp., 786 F.2d 1191,
                                                         

1199 (D.C. Cir.), cert. denied, 479 U.S. 853 (1986).
                                          

     We conclude that the district  court had an ample  basis

under Rule 403 for excluding the 13 exhibits in question.  We

commend the trial judge's thoughtful approach to the problems

presented and his efforts to balance the legitimate interests

on both side.  The government may on reflection think that it

has cause  to be  grateful  to the  district court--both  for

eliminating possible  errors that  could infect a  trial and,

hopefully,  for  forcing  the  government   to  consider  its

theories  of  the  offense  and of  relevance  with  somewhat

greater precision before they are exposed to a jury.

                             IV.

     Problems  that can  be treated  with some  confidence in

context are often very difficult to solve before other pieces

of the puzzle have been assembled.  This, as we have said, is

why district courts are  often hesitant to decide evidentiary

questions  before trial.   A  like difficulty  arises for  an

appellate  court  where,  as  here,  an  interlocutory appeal

brings to the  court only a part of the case.  Thus, our task

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might be simplified  if we could  speak with assurance  about

the  standard of scienter or, for that matter, the definition

of "specially designed."

     But  these are not issues that have been briefed in this

court, we have  not sought  to address them,  and nothing  in

this  opinion should be taken to suggest any view whatever as

to how those issues should be resolved.  Similarly, we stress

again  that what  we have  taken to  be facts  depends almost

entirely on the indictment and other descriptions of what the

government  thinks it can prove.  Any assertions of "fact" in

this  opinion,  including descriptions  of  documents or  the

inferences to  be drawn from  them, are without  prejudice to

what the trial may show or what may emerge after more context

has been supplied.

     All  that we  hold is  that the  district court  did not
                                   

abuse  its  discretion in  excluding  at this  time  from the

government's  case in  chief the  13 disputed  exhibits, each

taken as a  whole.   Within very broad  limits, the  district

court  is free to reexamine its position  on any issue as the

case develops.   See  generally United States  v. Uccio,  940
                                                                   

F.2d 753, 758 (2d Cir. 1991).  We say this not to suggest any

disagreement whatever with  the district court's rulings  but

simply  to  underscore the  limits  on  what this  court  has
                                                             

decided.

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     With   these  stipulations,   the  order   under  review

excluding the 13 exhibits is affirmed.
                                                 

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