The Japanese Journal of American Studies, No. 24 (2013)

Is Agent Orange a Poison? :Vietnamese Agent Orange Litigationand the New Paradigm of Poison

Takeshi Uesugi*

All substances are poisons; there is none which is not apoison. The right dose differentiates a poison and a remedy.
Paracelsus

Introduction
On March 30, 2005, after just over a year of proceedings, Judge Jack
B. Weinstein of the Federal District Court in the Eastern District of New
York dismissed the case The Vietnamese Association for Victims of Agent
Orange/Dioxin v. Dow Chemical et al. (hereafter VAVA v. Dow et al.)1 This
result was disappointing for many and infuriating for many more.2 Someinsinuated there was political pressure from the US government behind
Weinstein’s decision (e.g., Moto 2008). But within Weinstein’s statementof dismissal, perhaps, what vexed these commentators most was his
Copyright © 2013 Takeshi Uesugi. All rights reserved. This work may be used, withthis notice included, for noncommercial purposes. No copies of this work may be
distributed, electronically or otherwise, in whole or in part, without permission fromthe author.
*Lecturer, Fuji Tokoha University

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insistence that Agent Orange and the other chemical herbicides used by the
US military in the Vietnam War “should be characterized as herbicides andnot poisons” (Weinstein 2005, 60).
Was Agent Orange a poison? Except for a few industry lobbyists suchas Michael Gough (1997) and legal technicalists such as Judge Weinstein,most of us, I think, would probably now respond with a resounding
yes. Deployed by the US military and its allies as one of the defoliants
to remove forest cover of the Viet Cong guerrillas, in its heyday, Agent
Orange and America’s herbicidal warfare, code named Operation Ranch
Hand, gave birth to a new concept of war crime called “ecocide,” orecological genocide (Galston, in Knoll and McFadden 1970, 71–72;
Zierler 2011). Agent Orange and its contaminant, dioxin, were later known
to have caused–and continue to cause–many illnesses, including cancers
and birth defects, among the exposed population.
For most of us fed by these popularized images of Agent Orange,
Weinstein’s nit-picky distinction between an “herbicide” and a “poison”
may appear as a ridiculous, but innocuous, rhetorical point. But for theVietnamese plaintiffs the verdict that Agent Orange is not a poison meant
more. Clad in the protective shield of a “government contractor defense”(an argument that goes, “because the government made us do it, it is
not our fault”) the defendants, such as Dow Chemical and Monsanto,
were already virtually immune to ordinary product liability laws. The“not a poison” verdict made them more invincible by effectively barring
the plaintiffs’ principal allegation that they committed a war crime bysupplying the US military with a poison during the Vietnam War.
“Agent Orange, not a poison”—a “hairsplitting” argument indeed!3
But my confidence wanes if I consider whether it was a poison during
the time it was in use in Vietnam. In the 1960s, just as the US military
was beginning to spray Vietnamese forests with Agent Orange andother chemical herbicides, the idea of what is a poison and the field of
toxicology was going through a transition. Under the new paradigm ofpoison, dosage was still important in understanding the consequences of
poisoning; but it no longer differentiated a poison from a remedy. Beneaththe threshold of lethal dosage and acute poisoning, the world discovered
previously undetected risks of various insidious and horrendous diseases,
such as cancers, autoimmune diseases, and birth defects. In the UnitedStates, Rachel Carson’s (1962) Silent Spring was instrumental in
publicizing this new threat. Synthetic chemicals such as DDT and thecomponent chemicals of Agent Orange, 2,4-D and 2,4,5-T, and the latter’sIs Agent Orange a Poison?

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contaminant, dioxin, accumulated in the food chain and human bodies andinsidiously poisoned the population. This type of poisoning could havelatency of up to several decades, and the primary concerns, as would bechanted in the 1970s, were their carcinogenic, teratogenic, and mutagenic
potential (e.g., Galston 1971). What complicated the issue was that these“poisonous” substances were often unavoidable contaminants or active
agents of chemical pesticides and pharmaceutical products, which alsobrought many benefits to society so that it was not possible to outright
reject them. In this context, how to define and assign accountability forthe damages and risks incurred by toxic substances such as chemicals andradiation became an important scientific, legal, and sociological question(Jasanoff 1997).
In the field of Science and Technology Studies one of the common ways
to approach toxic tort litigation is to look at the use of scientific evidenceof causation in court (Jasanoff 1987, 1997). Since the 1980s, in the
United States, the awareness that courts need to reckon with increasingly
sophisticated and controversial scientific evidence has led to various
studies that try to bridge the fields of science and law (Berger 2003,
2005; Berlivet 2005; Caruth and Goldstein 2001; Eaton 2003; Jasanoff
1992, 2006). Toxic tort litigation is particularly “science heavy,” because
ordinarily the scientific evidence of causation linking plaintiffs’ injuries
to a specific chemical is often at the heart of the dispute (Jasanoff 1997).
In earlier Agent Orange litigations filed by US veterans of the Vietnam
War in the 1980s, this question of evidence was important (Schuck 1986).
However, in the Vietnamese Agent Orange litigation, the question of
causation never became the main point of contestation; the plaintiffs’
claims were barred from proceeding further before the litigation reachedthis stage. In the Vietnamese case, the main issue was the applicabilityof international law that prohibits the use of poison in war. And the boneof contention was over whether or not Agent Orange was categorically apoison. The intention and knowledge of the manufacturers and the military
purportedly answered this question.
In this article, I analyze the implications of the historical shift in thenotion of poison in the United States in the 1960s for the question of legal
responsibility in the context of VAVA v. Dow et al. First, I discuss how theVietnamese plaintiffs’ attorneys were boxed into making a rather strainedargument that insisted on there being a malicious intention embodied in
the substance itself (Agent Orange) while suspending the question about
the US military’s intent to poison. Second, I discuss how the possibility of206

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knowledge of a toxic substance changed, in particular, in the United States,
giving birth to the concept of an intentionless “risky” poison.4

Legal Quagmire
In the winter of 2004, a group of Vietnamese who claimed to havebeen poisoned by Agent Orange brought a class action lawsuit to Judge
Weinstein’s court in Brooklyn.5 The defendants were a cast of familiar
players in controversies over agrochemical risks and included high-profile
multinational corporations such as Dow Chemical and Monsanto. The
plaintiffs claimed that they suffered from the toxic effects of Agent Orange
and other chemicals that the defendants manufactured for the US militaryduring the Vietnam War and that the defendants were guilty of “aiding andabetting” violations of international law that banned poison in war.6
VAVA v. Dow et al. attracted much attention from peace activists,
Vietnam veterans, scientists, and international legal scholars around theworld. While different people were interested in different aspects of thiscase, legal scholars were particularly interested in the use of the US Alien
Tort Statute (1789), which was one of the key legal instruments underwhich the lawsuit was filed (Sebok 2005). The Alien Tort Statute provides
that US courts have “jurisdiction of any civil action by an alien for a tort
only, committed in violation of the law of nations or a treaty of the UnitedStates” (cited in Bederman 2001, 107). Although the law was passed in
1789, it lay largely dormant until the landmark case of Filártiga v. PeñaIrala in 1980, in which the defendant was brought to US courts to be tried
for the torture and murder of Joelito Filártiga, while the defendant was theinspector general of police in Asunción, Paraguay. Since then, the Alien
Tort Statute has been invoked in a number of human rights cases (including
Sosa v. Alvarez and Doe v. UNOCAL) in which grievances were filed in US
courts by foreigners over violations of international humanitarian laws by
US corporations that took place outside the United States. In recent years,
Corporate America, whose business practices in developing countries
sometimes border on human rights violations, has paid a large amount ofattention to these cases (Sebok 2005, 2).7 The outcome of VAVA v. Dow etal. was closely followed as it was thought to have a bearing on future cases
involving the Alien Tort Statute.
VAVA v. Dow et al. was also, in a sense, a new case dealing with an old
issue for US courts, which had had experience with similar lawsuits filedby Americans who also claimed to have been injured by Agent Orange.

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Toward the end of the 1970s, the word began to spread that the veterans
were suffering from health problems due to their exposure to herbicides
during the war (Wilcox 1989). At that time, the Veterans’ Administration
had no special provision for Agent Orange-related illnesses (Instituteof Medicine 1994). It was also around this time that the toxic effects
of dioxins became internationally publicized through toxic disasters
at Seveso, Italy; Love Canal, New York; and Times Beach, Missouri(Allen 2004). Scientists had also come to a better understanding ofvarious pathogenic processes associated with dioxin exposure, such as
carcinogenic and teratogenic effects (Van Miller et al. 1977; Kociba et
al. 1978), and the mechanisms through which dioxin caused these toxic
effects in animal cells (Poland and Glover 1973).
In 1978 several veterans began to bring their individual cases to court.
Over the next four years, the lawsuits (which took the chemical companies
as the defendants) grew in scale, involving over 600 separate lawsuits
and 15,000 litigants (Novey 1988). These cases were consolidated into
one class action lawsuit in 1983 under Judge Jack B. Weinstein in the
Eastern District of New York (the same judge who would preside over theVietnamese case two decades later). The veterans’ Agent Orange litigation
enjoyed an enormous public visibility, and in 1984, the veterans reached a$180 million settlement with the chemical manufacturers (Schuck 1986).8
Despite their ostensible success, many veterans were left disgruntled
by this outcome. “To many of the veterans,” a legal scholar, Peter Schuck(1986, 255), wrote, “the case was a morality play performed on a stage—
the court.” But the technical aspect of the case contradicted the intuitive
understanding of the veterans, who were left with the impression thatthe law was “profoundly mystifying, alien, and unjust” (256). For one
thing, the settlement was made without the defendants’ admission of guilt.
Furthermore, the central question about whether Agent Orange actuallycaused the veterans’ illnesses remained unsettled (Weinstein 2009). In fact,
in the opinion of Weinstein, the issue was ever murkier in 1984.
Following the settlement of the class action suit in 1984, the veterans
who had opted out of the class action suit began to bring individual suits.
During this second wave of veterans’ Agent Orange litigation, Judge
Weinstein dismissed all cases on the ground that the claims were coveredby the class action suit and that these new plaintiffs failed to submit“acceptable evidence of causation” (Novey 1988). Twenty years later,
Weinstein (2009) was quite ready to dismiss the Vietnamese case, as well
as more recent cases filed by the Americans, on the same ground of lack of208

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evidence of causation, if it got that far.
The Vietnamese Agent Orange litigation was beset with many difficulties
from the beginning. Shortly after the Vietnamese filed their lawsuit, theveterans’ cases, often referred to as the Isaacson and Stephenson cases,
were dismissed under the government contractor defense. It was inevitablethat this decision would affect the Vietnamese class action case.9
VAVA v. Dow et al. was dismissed in March 2005. As expected, theprincipal argument in favor of the defendants was the government
contractor defense. This gave the manufacturers of the chemicals virtual
immunity by exempting them from legal liability for the consequences ofAgent Orange, except—and the statute came with a clause, reiterated byJudge Weinstein—in cases where violations of international laws wererecognized.10
Having dismissed the plaintiffs’ domestic tort (product liability) claims
under the government contractor defense, Weinstein moved on to examine
their international law claims. The list of international laws that theplaintiffs accused the defendants of violating included: torture, war crimes,
crimes against humanity, environmental law violations, and even genocide.
Weinstein rejected all of these claims. Citing fifteenth-century “father of
toxicology” Paracelsus’s dictum that dose differentiates a poison from a
remedy (Weinstein 2005, 59), the judge argued that whether or not Agent
Orange was a poison hinged on the “design and degree” (in other words,
the “intention and dosage”).11 Thus, while dioxin, which is a contaminantof Agent Orange, is a poison, Weinstein argued, Agent Orange, whichcontained on average 10 parts per million of dioxin, is not a poison. And
insofar as Agent Orange is not a poison, its use in Vietnam did not violate
the customary international law prohibiting the use of poisons in war. At
least in part, therefore, this litigation was a contestation over the binary
categorical identity of the chemical substance as poison or not and thesubjective intentions that defined it. The question was: Whose intention
and whose design determines the nature of a substance as a poison? And
what does “intention” mean here?
In legal discourse, “intention” has a meaning somewhat different fromthe ordinary use of the term. Mens rea, or guilty mind, for lawyers lies on acontinuum from intent, knowledge, and recklessness to negligence (Khanna
1999, 357). A desired consequence with full awareness of the situation isintended. Knowledge entails awareness of practical certainty that a certain
consequence will follow an act. Recklessness is a conscious disregardingof a substantial and unjustifiable risk. And negligence is a failure toIs Agent Orange a Poison?

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exercise due care. While mens rea normally refers to the subjective stateof mind rather than an objective condition, in the absence of a confession,
one must infer a subjective state of mind from the objective situation. On
one extreme of the continuum, when the expected outcome is thought tobe “objectively” inevitable, it is inferred to be desired and thus intended.
Ordinarily, negligence, for example, provides a case for product liability
tort. But where, on this continuum, does mens rea of the manufacturersof Agent Orange fall? Agent Orange may have caused serious healthconsequences. Yet, ostensibly at least, the purpose of its use by the US
military was to defoliate forests and destroy enemy crops rather than toharm human beings. Insofar as the military was concerned, therefore, thetoxic health effects of Agent Orange were unintended collateral effects,
and if the issue is about the unintended side effects of herbicides, it does
not fall under the purview of international law.
After the dismissal of VAVA v. Dow et al. in 2005, the plaintiffs’
subsequent appeals to the Court of Appeals for the Second Circuit andthe Supreme Court of the United States were trapped in increasingly
tortuous and convoluted arguments concerning international laws andthe intentionality of the manufacturers. In the district court, Judge
Weinstein made it clear that the criminality of an act of the magnitude
of “crimes against humanity” must be accompanied by intentionalityof the actors. As far as he was concerned, exposing the plaintiffs to achemical substance that may have inadvertently posed health risks andinjury was the result of negligence or recklessness; it was not the sameas intentional poisoning. Thus, in the writ certiorari submitted to the US
Supreme Court, the plaintiffs’ attorney largely skirted around the questionof intention of the US military, stating that they “nowhere allege thatthe government intended to harm human beings through its use of Agent
Orange,”12 and entreated the court to “infer an intent to poison” by the
defendants’ knowledge of this “very potent poison [dioxin]” in Agent
Orange, which was to be “sprayed over vast populated areas.”13 Even
if the toxic effects of Agent Orange suffered by the plaintiffs were an“unintended consequence” of spraying herbicides designed to defoliate
forests as far as the US military was concerned, they argued, “at least
insofar as the chemical company respondents are concerned,” it was not anunintended consequence. Ultimately, the issue came down to the questionof knowledge not so much of the etiology (cause) of the illnesses plaintiffs
complained of, but a categorical question about whether Agent Orange
was a poison or not, which, the plaintiffs’ attorneys argued can be inferred

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from the manufacturers’ knowledge of the toxicity of Agent Orange at thetime of procurement.

What Was Agent Orange?
Agent Orange has been called a defoliant, an herbicide, an “anti-plant”
agent, a toxic chemical, and even a chemical weapon. In the 1950s, thecomponent chemicals of Agent Orange—2,4-D and 2,4,5-T—were hailed
as new and promising weed killers. The newspaper ads from that period
describe them as “The Weed-Killing Miracle: New and Improved WeeDone”14 and as “The Modern Methods”15 in the “War on Weeds.”16 But
by 1971, when its use in Vietnam as a military herbicide was finallyterminated, this mixture of “miracle herbicides” had fallen from grace. It
was given the sinister name “Agent Orange” (Newton and Young 2006,40), which was immediately associated with “fetal malformation.”17 It
was accused of being a chemical weapon,18 an agent of “ecocide,”19 anda weapon comparable to the atomic bombs dropped on Hiroshima andNagasaki.20 How did these seemingly benign and beneficial herbicides
used in agriculture and forestry become such terrible, wicked, evil thingsin the span of merely two decades? The answer to this question lies
not with the changing nature of the chemicals themselves, nor with thechanging manner of their use (although the scale of use of these chemicals
in Vietnam was enormous). It was the changing context of scientificknowledge and moral values that led to this change in the ontology of thechemicals that had come to be known as Agent Orange.
Agent Orange was not meant (“designed” in Judge Weinstein’s
language) for all the evils it was later accused of committing. In this sense,
it was unlike any other weapon of mass destruction. From its birth, theatomic bomb, for example, was meant to be a lethal weapon, designed
to cause indiscriminate destruction. The birth and “maturation” of Agent
Orange, on the other hand, was not so straightforward. Born in 1941 in
the laboratory of an industrial chemist, Robert Pokorny (1941), it wasdeveloped further in the Chemical and Biological Warfare Division of
the US Army during World War II, mainly for the use in the Pacific front(Cecil 1986). In postwar America, the component chemicals of Agent
Orange, 2,4-D and 2,4,5-T, became popular herbicides used in agriculture
and forestry. Agent Orange was a military adaptation of these commercial
herbicides.
This does not mean that there were no signs of their toxic side effects

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in the early years. The signs of human toxicity of 2,4-D and 2,4,5T were available to the chemical companies from the 1940s. Some ofthe earliest evidence came from the clinical cases of factory workers.
In 1949, for example, the workers at Monsanto were exposed to thechemical in an accident involving a runaway reaction at the factory
producing 2,4,5-trichlorophenol (precursor of 2,4,5-T). The workers
initially complained of a burning sensation in the eyes, nose, and throat.
Subsequent symptoms included nausea, vertigo, headache, vomiting,disturbed sleep, nervousness, loss of libido, impotence, high cholesterol,
raised blood fat levels, unexplainable pain, and extreme fatigue, plus
pustules and pigmentation of the skin. This latter skin condition was called“chloracne” (Hay 1982, 98).
Chloracne was no ordinary acne. A doctor at Diamond Alkali chemicalplant, where an outbreak of chloracne occurred among workers in 1954,
commented on “how disfiguring this disease is and what a social disability
it is.” 21 In 1956 a physician working with a patient from Boehringer
Company in West Germany discovered that chloracne was caused by acontaminant of 2,4,5-T, called tetrachlorodibenzo-p-dioxin (Hay 1982).
Scientists there subsequently developed a method to reduce dioxin
impurity in 2,4,5-T, and this knowledge was shared with Dow Chemical
in 1957. Thus, by the time Dow began to produce 2,4,5-T for the US
military in the 1960s, its scientists had known for some time about the
problem of chloracne and dioxin contamination of 2,4,5-T, as well as thetechnique to reduce this contamination (which they shared with other US
manufacturers in 1965).22 Was this not evidence enough to conclude thatthe manufacturers knew how toxic 2,4,5-T was?
One of the points of contention in Agent Orange litigation was
the discrepancy between what the manufacturers knew and what the
government knew. Here, the American plaintiffs’ counsel and theVietnamese plaintiffs’ counsel differed as well. The attorney for theAmerican plaintiffs focused on how the manufacturers had concealed
much of the information on the toxicity of 2,4,5-T from the government
and the military. They thought it important that the US government may
not have “selected 2,4,5-T at all if the manufacturers [had] told them
about the [dioxin] contamination.”23 If the government had unwittingly
purchased a defective herbicide, the government contractor defense would
not protect the defendants.
The Vietnamese plaintiffs, on the other hand, characterized thechemicals as military herbicides, equivalent to chemical weapons. If, as212

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Dr. James R. Clary of the Chemical Weapons Branch of the Air Forcetestified, the military knew that “the ‘military’ formulation [of 2,4,5-T] hada higher dioxin concentration [than the commercial version]” but accepted
it “because the material was to be used on the ‘enemy,’”24 then it would bepossible to characterize Agent Orange as a poison weapon (rather than justone version of a commercial herbicide). In their arguments, the veterans’acquitted the government thereby placing all blame on the manufacturers.
The Vietnamese plaintiffs, on the other hand, accused the manufacturers ofcomplicity with the US military, the principal agent in committing the war
crimes.
However, one issue that did not get elaborated in these litigations was
the fact that there was considerable difference between the symptoms
and diseases associated with Agent Orange and the toxic effects of 2,4,5T as it was known before the war. If one compares symptoms reported
in association with 2,4,5-T before and after the Vietnam War, chloracne,
porphyria cutanea tarda (skin symptoms), and peripheral neuropathy
were the only conditions that persisted in the post-Vietnam War literature
on Agent Orange (see Hay 1982). Many of the symptoms observed incases of occupational exposure in the production process (such as “nausea,
vertigo, headache, vomiting, and unexplainable pain and extreme fatigue”)
were acute conditions or could be mistaken for psychosomatic effects.
Reports of these acute conditions virtually disappear from the scientific
literature on the effects of Agent Orange in the postwar era (Institute ofMedicine 1994). In fact, in a brief submitted to the court in VAVA v. Dow
et al., the US government admitted that it knew about dangers of thesechemicals as much as (or more than) the manufacturers did, although thisknowledge was limited to “chloracne and certain forms of liver damage.”25
More serious diseases such as cancers and birth defects were suspected
only after Agent Orange came in use in Vietnam.
In 1969 the understanding of Agent Orange shifted radically whenevidence of teratogenic effects of 2,4,5-T on mice reached the public.
This information was discovered in a general pesticide screening thatwas commissioned by the National Cancer Institute in 1964 (Advisory
Committee 1971). In June 1966, preliminary results had already indicatedthe teratogenic nature of 2,4,5-T. However, the result was not delivered
to the National Cancer Institute for two more years. It took a further yearof bureaucratic dawdling before the information was leaked to a public
advocacy group known as Nader’s Raider’s, who succeeded in puttingIs Agent Orange a Poison?

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pressure on the White House to release the information in October 1969
(Wade 1971).
Within a month, it was reported in the United States that in the summerof 1969 “several South Vietnamese newspapers [had] printed photographs
and stories about deformed South Vietnamese babies” (Nelson 1969).
People now began to talk about Agent Orange, which was suddenly“discovered” to be contaminated with “one of the most poisonous
substances ever created,” dioxin.26 Its primary crime was remembered to be
its terrible effect on human health. Previously, when what was evil about
Agent Orange was the military use of an herbicide, it was the scale of its
use that mattered. Once malformation of fetuses was noted, however, thenature of the chemical itself—and by proxy, the chemical manufacturers—
became the object of criticism.27

New Paradigms of Poison“But why,” as Bryce Nelson (1969, 979), a reporter for the journal
Science, wondered at the time, “were these herbicides allowed to be
widely used in Vietnam before scientific studies on animals had been
performed?” In 1969 it appeared as though there had been a complete
oversight in testing these chemicals for safety. Why had this happened?
An easy answer is that before the 1960s, teratological testing ofpregnant animals was not part of the routine procedure for product-safety
testing. The government agencies had established no guidelines for it,
and few scientists even considered doing it (Wilson and Warkany 1985,
293). But this is only part of the answer. In fact, ever since 2,4-D and
2,4,5-T were invented, scientists had been conducting their own safety
tests. The question is: What kind of tests? Here are some examples of the
toxicological tests performed before the 1960s:◦In the 1940s, Ezra Kraus at Fort Detrick’s Chemical and Biological
Warfare Division experimented with 2,4-D on himself, ingesting
0.5 grams of the substance per day for three weeks. He found no ill
effects (Butler 2005, 539).
◦In 1946, Nancy Bucher, a medical researcher at Harvard, looked at
the effects of 2,4-D on mice with sarcoma and found no effects (Butler
2005, 539).28◦In 1953, scientists at Dow Chemical tested 2,4,5-T on dogs. They
found that 2,4,5-T was lethal for dogs at the dosage of 20 mg per kg

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Takeshi Uesugiof body weight per day, but that at lower dosage the animals did not
develop “significant lesions in the liver or other organs” (Butler 2005,
540).
◦In the mid-1950s, Karl Schultz at Boehringer Company performed
rabbit ear tests on the precursor of 2,4,5-T, 2,4,5-trichlorophenol.
He found that a pure sample of trichlorophenol did not cause
inflammation in rabbit ears, but the sample contaminated with dioxin
did. He concluded that it was dioxin that caused the skin condition
called chloracne in humans. Schultz also tested the sample on his left
arm and found that it induced the same skin lesions as was seen infactory workers exposed to 2,4,5-T (Butler 2005, 540).
Note that except for Schultz’s experiment these tests came to theconclusion that 2,4-D and 2,4,5-T were safe (at least at the dosage factory
workers and farmers were exposed to). Whether these assessments weremade in good faith or not, one can observe how crudely and carelessly
these tests were designed and conducted. For instance, none of thesestudies tested for long-term health effects and reproductive effects, which
they were later suspected to have. Kraus and Schultz were even recklessenough to test the chemicals on themselves.
This lack of concern for latent health effects was not entirely surprising,
given that until the mid-1960s, long-term effects of low-dosage exposure
to these chemicals in relation to cancer, for example, were not included
in product-safety testing. Also, before 1960 “the concept of searching forembryotoxic/fetotoxic effects after in utero exposure and the application of
any adverse findings to estimating human teratological risk simply had not
evolved” (Wilson and Warkany 1985, 293). Ironically the critical events
that altered the awareness of both scientists and the public occurred rightaround the time the US military began to use herbicides in Vietnam.
The year 1962 was an eventful one. Besides the beginning of the US
herbicide program, Operation Ranch Hand, it was also the year that thethalidomide crisis exploded in countries in Europe and Japan. This crisis
involving iatrogenically induced birth defects caused by the morning
sickness drug, thalidomide, soon became proverbial. “Must we wait for
definite proof of an abnormal birth before we are prepared to act? Have
we learned nothing from the thalidomide tragedy?” asked Arthur Galston(1970), a scientist advocating a ban on 2,4,5-T in 1970. The thalidomide
crisis had become a premonition for future disasters involving poorly
tested chemicals.

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The thalidomide crisis also played its part in altering the field of
toxicology in the 1960s. Decades later, teratologists James Wilson andJosef Warkany (1985) recalled that it was this disaster that gave momentum
to the teratologists who were beginning to organize themselves into its
own discipline. Teratology, or the study of congenital malformation, was a
relatively old discipline. By the eighteenth century, for example, teratology
was a flourishing field in France, where scientists typically createdmultiheaded hydras by making incisions on the bodies of microorganisms
or tried to create new species by changing their environment (Dally
1998). It was literally a terato (monster)-logy (study): a study of monster
breeding. In these earlier days, most of the experiments were conducted on
invertebrates; it was not until the 1930s that teratologists began to study
mammalian fetuses. Even then, the focus was on producing malformation
rather than protecting populations from teratogenic agents.
Chemical mutagenesis treaded a similar path. Scientists began to study
the mutagenic effects of chemical substances in the post-World War IIera (Frickel 2004). Scientists such as Charlotte Auerbach, a geneticist at
Edinburgh, tested substances like mustard gas for mutagenic effects, butthese studies on chemical mutagens soon went out of favor in her field.
Geneticists were interested in studying mutations for basic research on
genetics, and radiation, which could produce mutation at a more controlled
rate, was a more convenient tool for research than the chemicals, whose
ability to produce mutation was unpredictable. It was only toward theend of the 1960s that some geneticists began to express concern about thevarious synthetic chemicals and their effects on the genetics of the humanpopulation. They called these chemicals, “environmental mutagens.”
The Environmental Mutagenesis Society was established in 1969,
and the First International Conference on Environmental Mutagenesis
was held in 1973 (Bendix 1974, 188), which indicates the importance of
these decades in the development of the idea of chemical mutagenesis.
Participants at the first environmental mutagenesis conference expressedastonishment that so many new chemicals were introduced to the market
without proper testing for “mutagenicity, carcinogenicity, or teratogenicity”(188).
In the 1970s this new discourse on toxic substance was also entangledwith a prophetic discourse of “epidemiologic transition” (Omran 1971).
Throughout the 1960s, there was a gradual increase in awareness among
public health experts that the diseases of foremost concern were no longer
infectious diseases but “degenerative and man-made diseases” such as

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cancers and autoimmune diseases (516). These man-made diseases were
often attributed to new synthetic chemicals.
It was also in 1962 that Rachel Carson published Silent Spring, whichsoon became a national sensation in the United States. Carson brought
together previously scattered knowledge in ecology, chemistry, medical
science, and politics into a comprehensible form that discussed invisible
pollution that threatened the “livable” environment, and gave agency tothis impending ecological catastrophe. Chemicals such as DDT, benzenes,
and dioxins, now known to be ubiquitous in the environment (Christie
and Tansy 2004), were linked with the nation’s growing preoccupation
with cancer and birth defects. The common characteristics shown by theseenvironmental poisons were that they were everywhere and persistent;
they accumulated in the food chain; and their toxic effects could become
manifest years after exposure.
In the 1970s, an air of “doom and gloom” pervaded the discourse ofenvironmentalism.29 The chemical industry was releasing thousands of“unwanted and even unidentified substances” each year (Abelson 1970,
495). Like merchandise streaming out of automated factories, thesechemicals defied attempts to locate the intention. Operating beneath thethreshold of detection, insidiously but surely, these new poisons werespreading; and since the exposure to these poisons did not necessarily
result in any harmful effects but rather they were merely associated with
an elevated statistical rate of certain diseases in a population, the experts
call these poisons “risk factors.” These “statistical” poisons rewrote
the definition of “poison” in a radical way, giving rise to new concerns,
sensibilities, and responsibilities.
Unlike the moral condemnation of poisoning of the previous age (Price
1995; Whorton 1974), the statistical risk posed by poison of our age led
to a bifurcated response. Risk-benefit comparisons involve a comparisonof incommensurable factors (Beck 1992). In the case of Agent Orange inthe 1960s, this comparison was between the chance of immediate survivalof American soldiers (ostensibly increased by the use of Agent Orange indefoliation) versus the long-term hazards of the chemicals on the healthand environment of the Vietnamese people. Once the war in Vietnam wasover, the struggle over 2,4,5-T was brought home to the United States in
the form of a regulatory war over domestic commercial herbicides. The
question became the economic benefit of using 2,4,5-T (for the chemicalindustry and for agriculture and forestry) versus its effects on long-term
health and survival of the Americans.

Is Agent Orange a Poison?

217

The ontological question about Agent Orange was firmly wedged within
this new discourse of environmental risk. With the emergence of this newparadigm of poison, the moral order and the legal structure dealing withaccountability for suspected damages also had to change. Judge Weinstein(2009), for example, argued that “mass toxic tort,” which seeks to deliver
justice based on general risk and negligence (rather than particularcausation and intention), was one of the legal traditions that developed
within this context (Jasanoff 1987; Schuck 1986). In these toxic tort cases,
court decisions effectively function as retroactive risk regulations, in which“preventive effects depend on potential injurers extracting appropriate
signals from what the courts do and modify[ing] their behavior” (Galanter
1994, 135). International laws, however, still seems to work with the older
notion of poison.

Conclusion
In this article, I argued that the characterization of Agent Orange as apoison, which was crucial for the plaintiffs’ international law claim, was
not as self-evident before the 1960s as it may seem now. This was because
in the 1960s, a new paradigm of poison emerged, which rendered the toxic
effects of Agent Orange visible. Poisons were no longer defined by anintention to do harm. Nor did they turn into remedies when applied below
a certain dosage, as the classical toxicological dictum held. This transition
happened in the 1960s, just as the US military was spraying Vietnamese
forests with Agent Orange. This timing, I believe, was important forthinking about the litigation. The plaintiffs in VAVA v. Dow et al. invoked
the international law that operated with the pre-1960s paradigm of poison,defined by the intention behind its design or those who deployed it. But
the poison they complained about was only a risk factor, which came todominate public discourse in the 1970s.
On March 2, 2009, the Vietnamese plaintiffs’ five-year long quest forjustice in the US courts came to an end when the US Supreme Court
declined to review the lower court’s decision. It was not altogether an
unexpected outcome. One Vietnamese involved in the litigation stoically
accepted the difficulty in finding justice in the US courts and contented
himself that, at least, the litigation drew the world’s attention to the
problem in Vietnam and put pressure of the US government to deal withthe problem of dioxin in Vietnam through other means.30
In the past few years, Monsanto, the world’s largest producer of218

Takeshi Uesugi

genetically modified seeds (and also one of the defendants in the Agent
Orange trial), has been gearing up to expand its business in selling
seeds to Vietnam.31 So far, the company has evaded its responsibility tocompensate the victims of Agent Orange in Vietnam. Nevertheless, theleadership of the Socialist Republic of Vietnam seems quite willing toallow Monsanto to “return” to Vietnam. As with many state-led projects in
Vietnam, opposition to this move is quickly silenced. On a positive note,the presence of Monsanto in the country may enable the victims of Agent
Orange in Vietnam to sue the company under Vietnam’s own legal system.

Notes
Vietnamese Assoc. for Victims of Agent Orange/Dioxin v. Dow Chem. Co., MDL
No. 381, 04-CV-400 (EDNY).
2
See, for example, Moto 2008.
3“A Non-Lawyer’s Guide to Judge Weinstein’s Agent Orange Decision,”
Warlegacies.org, accessed August 15, 2012, http://www.ffrd.org/Lawsuit/AO%20
decision%20analysis.htm.
4
In this article I use legal documents, scientific articles, and news reports on the
toxicity of Agent Orange, as well as secondary literature on epidemiology, internationallaw, and the history of the use of Agent Orange in Vietnam.
5
VAVA v. Dow et al. (Original Complaint).
6
VAVA v. Dow et al.(Amended Class Action Complaint).
7
The ATS does not give courts a “mandate to seek out and define new and debatableviolations of the law of nations.” VAVA v. Dow et al. (2006): Brief for Defendants
Appellees: 29 (05-1593-cv).
8
With the high interest rates at the time, this amount increased to about $330 million
by the time it was distributed to 291,000 veterans who filed their claims before the cutoff date in 1994. (Stephensons v. Dow et al. Prod. Liability Litig. 05-1760-cv [Second
Circuit Court, brief for plaintiff appellee], 2007.)
9
The government contractor defense is one element of the sovereign “discretionaryfunction” exception to the Federal Tort Claims Act (Cohen 2007). It gives protection
to government and military contractors such as Dow and Monsanto by extending
sovereign immunity under domestic tort law. For details, see Rakowsky (2005).
10
The Nuremberg trials, in which the manufacturers of the chemical gas Zyklon B
were found guilty of aiding the Nazi Final Solution by providing the chemicals used ingas chambers, offered historical precedence (Weinstein 2005).
11
Vietnamese Assoc. for Victims of Agent Orange/Dioxin v. Dow Chem. Co., MDL
No. 381, 04-CV-400 (EDNY, March 10, 2005) (Amended Memorandum, Order andJudgment), 50 (my italics in text).
12
VAVA v. Dow et al., Appeal Decision, 27(my italics in text).
13
In Re: VAVA v. Dow et al. (Petition for writ of certiorari to the Supreme Court of
United States, 2008), 12–13.
14“The Weed-Killing Miracle: New and Improved Wee-Done,” New York Times,
May 27, 1951.
15“Modern Methods of Removing Unwanted Trees,” New York Times, March 29,
1

Is Agent Orange a Poison?

219

1953.
16
“War on Weeds,” New York Times, February 8, 1953.
17“Scientists Assail Vietnam Method,” New York Times, August 29, 1971.
18“Soviet Note Assails US ‘Poison Gas’; Embassy Rejects It,” New York Times,
March 27, 1965; “‘Crime,’ Peking Declares,” New York Times, March 24, 1965; “Hanoi
Charges US Tests Chemicals in South Vietnam,” New York Times, August 23, 1965.
19“On the Planet Polluto,” New York Times, April 25, 1971.
20“Hanoi Sees Birth Defects,” New York Times, December 30, 1970.
21
Cited in VAVA v. Dow et al. (United States Court of Appeals, September 30, 2005,
brief for plaintiff apellants), 28.
22
Dow memo (DOW 747096) June 24, 1965. AOWG listserv, Dow1-120896. “Reporton the Chloracne Problem Meeting March 24, 1965,” dated March 29, 1965, accessed
March 2011, http://www.bluewaternavy.org/WhoKnew/Exhibit%2016.pdf.
23
Stephensons v. Dow et al. (In re “Agent Orange” Prod. Liability Litig. 05-1760-cv)
2007 Second Circuit Court (reply brief for plaintiff appellants), 90.
24
VAVA v. Dow. 05-1953-cv (brief for plaintiff appellant), 23.
25
In Re: VAVA v. Dow Supp. MDL No. 381, 04-CV-400 (EDNY); In Re: VAVA v.
Dow et al, 05-1953-CV (Brief of the United States as Amicus Curea in Support ofDefendants), 7.
26“Professor Arthur William Galston: The Plant Physiologist,” Times (London),July 10, 2008, accessed July 22, 2011, http://www.timesonline.co.uk/tol/comment/
obituaries/article4302745.ece.
27
Stockholm Conference (United Nations Conference on the Human Environment),
the first UN conference on the international environment, took place in 1972.
On international laws of warfare, the Protocol I of the Geneva Convention andEnvironment Modification Treaty were promulgated in 1977, prohibiting the means of
warfare intended or expected to cause long-term and severe damage to the environment.
28
According to “Nancy Bucher: Biography, American Society for Cell Biology,”
accessed March 23, 2011, www.ascb.org/files/ profiles/Nancy_bucher.pdf, her study
originally meant to examine the effects of 2,4-D in reducing sarcoma, not whether it
could cause sarcoma.
29“On the Planet Polluto,” New York Times, April 25, 1971.
30
Anonymous personal communication.
31“Agent Orange maker Monsanto back in Vietnam: Scornful of Chemical's Killer
Legacy, Some Vietnamese Resist Corporation's Return,” Global Post, February 7, 2012,
accessed August 17, 2012, http://www.globalpost.com/dispatches/globalpost-blogs/
southeast-asia/agent-orange-maker-monsanto-returns-vietnam.

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