military operation is authorized in both Article
I—granting Congress the authority to declare
war and to raise and establish the military—and
Article II—authorizing the president to lead the
military as commander in chief. Similarly, the
authority to negotiate agreements internationally
is given to the president initially, with the advice
and consent of the Senate. Thus, the overlapping
of authority creates an “invitation to struggle”
whereby the separate branches of government dil-
igently pursue additional powers. Since the Con-
stitution does not explicitly distinguish between
domestic and foreign affairs, the judiciary often
is involved in settling questions of foreign policy
powers.
Historically, the courts were fundamental par-
ticipants in the formulation of U.S. foreign policy
because of particular constitutional inter-
pretations. During the early 19th century, the
judiciary adjudicated several disputes between the
legislative and executive branch over the bound-
aries of foreign affairs decision making. In Bas
v. Tingy, 4 U.S. 37 (1800), the Supreme Court
ruled that only Congress is able to declare either
an “imperfect” (limited) war or a “perfect” (gen-
eral) war. In Talbot v. Seeman, 5 U.S. 1 (1801),
the Court determined that all powers of war are
constitutionally vested in Congress. In Little v.
Barreme, 6 U.S. 170 (1804), Chief Justice John
Marshall held that President Adams’s instructions
to seize hostile ships were in confl ict with Con-
gress and therefore illegal. Finally, in the Prize
Cases, 67 U.S. 635 (1863), the Supreme Court
ruled that the president, in his capacity as com-
mander in chief, possesses the power to repel sud-
den attacks against the United States. These early
cases demonstrated the judiciary’s assertiveness in
defi ning constitutional parameters within which
the political branches of government operated.
While the courts were active participants in
foreign affairs during the early 19th century, the
next century witnessed an exercise of judicial
restraint in these disputes. Consequently, the
president successfully expanded his constitutional
authority, although not without some legal con-
troversy. The two most prominent foreign affairs
decisions in the 19th century proscribe somewhat
contradictory rules for presidential authority. The
fi rst case, U
NITED STATES V. CURTISS-WRIGHT EXPORT
C
ORP., 299 U.S. 304 (1936), involves the question
of whether the president can place embargoes on
arms and munitions exports to specifi c countries
in order to promote peace. Writing on behalf of
the Court, Justice George Sutherland relied on
a quote from John Marshall (later Chief Jus-
tice of the Supreme Court) in 1800, “The Presi-
dent is the sole organ of the nation in its external
relations, and its sole representative with foreign
nations.” Based on these words, Justice Sutherland
concluded that the president had vast authority
when conducting the nation’s foreign affairs.
In contrast to the rule established in Curtiss-
Wright is the Court’s decision in Y
OUNGSTOWN
SHEET & TUBE COMPANY V. SAWYER, 343 U.S. 579
(1952). In this case, President Truman issued an
executive order directing Secretary of Commerce
Sawyer to seize control of most of the steel mills in
the United States. Truman believed this action was
necessary in order to avoid a potential strike by the
steelworkers that might adversely affect the mili-
tary involved in the Korean War. While the major-
ity opinion ultimately declared the president’s
actions unconstitutional, this case is most note-
worthy because of a concurring opinion written
by Justice Robert H. Jackson. In the concurrence,
Justice Jackson outlined three zones of authority
for presidents in the realm of foreign affairs.
The fi rst zone occurs when the president acts in
accordance with congressional authorization. Here,
the president is most powerful because he can rely
on his constitutional authority under Article II and
on Congress’s constitutional authority in Article I.
In contrast, the last zone occurs when the presi-
dent acts in direct opposition to Congress. Here,
presidential authority is weakest because he must
subtract Congress’s Article I authority away from
his powers under Article II. Finally, Justice Jackson
describes the second zone of authority as the “zone
of twilight.” This occurs when the president acts
and Congress is silent, and it is unclear whether
these situations are constitutional. While the rul-
ings in these two cases contradict each other, it is
clear that the courts are important in determin-
ing the constitutional authority to conduct foreign
foreign affairs and the Constitution 287
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