The courts have often acknowledged the President's constitutional powers with respect to
treaties. Thus, it has long been accepted that the President may determine whether a treaty has
lapsed because a foreign State has gained or lost its independence, or because it has undergone
other changes in sovereignty.
38
Nonperformance of a particular treaty obligation may, in the
President's judgment, justify a decision to suspend or terminate the treaty.
39
While Presidents
have unrestricted discretion, as a matter of domestic law, in suspending treaties, they can base
the exercise of this discretion on several grounds. For example, the President may determine that
"the conditions essential to [the treaty's] continued effectiveness no longer pertain."
40
He can
decide to suspend treaty obligations because of a fundamental change in circumstances, as the
United States did in 1941 in response to hostilities in Europe.
41
The President may also
determine that a material breach of a treaty by a foreign government has rendered a treaty not in
effect as to that government.
42
Exercising this constitutional authority, the President can decide to suspend temporarily
our obligations under Geneva III toward Afghanistan. Other Presidents have partially suspended
treaties, and have suspended the obligations of multilateral agreements with regard to one of the
state parties.
43
The President could also determine that relations under the Geneva Conventions
F.2d 697, 706-07 (D.C. Cir.) (en banc), vacated and remanded with instructions to dismiss, 444 U.S. 996 (1979);
Senate Comm. on Foreign Relations, 106
th
Cong., Treaties and Other International Agreements: The Role of the
United States Senate 201 (Comm. Print 2001) (prepared by Congressional Research Service, Library of Congress)
(footnotes omitted)
37
See Memorandum for John Bellinger, III, Senior Associate Counsel and Legal Adviser to the National Security
Council, from John C. Yoo, Deputy Assistant Attorney General and Robert J. Delahunty, Special Counsel, Office of
Legal Counsel, Re: Authority of the President to Suspend Certain Provisions of the ABM Treaty (Nov. 15, 2001);
see also Memorandum for William Howard Taft, IV, Legal Adviser, Department of State, from John Yoo, Deputy
Assistant Attorney General, Office of Legal Counsel, Re: President's Constitutional Authority to Withdraw Treaties
from the Senate (Aug. 24, 2001).
38
See Kennett
v.
Chambers, 55 U.S. 38, 47-48, 51 (1852); Terlinden v. Ames, 184 U.S. 270,288 (1902); Saroop v.
Garcia, 109 F.3d 165, 171 (3d. Cir. 1997) (collecting cases). Alexander Hamilton argued in 1793 that the
revolution in France had triggered the power (indeed, the duty) of the President to determine whether the pre-
existing treaty of alliance with the King of France remained in effect. The President's constitutional powers, he said,
"include that of judging, in the case of a Revolution of Government in a foreign Country, whether the new rulers
are competent organs of the National Will and ought to be recognised or not: And where a treaty antecedently exists
between the UStates and such nation that right involves the power of giving operation or not to such treaty."
Alexander Hamilton, Pacificus No. 1 (1793), reprinted in 15 The Papers of Alexander Hamilton 33,41 (Harold C.
Syrett et al. eds 1969).
39
See Taylor
v.
Morton, 23 F. Cas. 784, 787 (C.C.D. Mass. 1855) (No. 13,799) (Curtis, Circuit Justice),
affd,
67
U.S.
(2 Black) 481 (1862).
40
See International Load Line Convention, 40 Op. Att'y Gen. 119,124 (1941). Changed conditions have provided a
basis on which Presidents have suspended treaties in the past. For example, in 1939, President Franklin Roosevelt
suspended the operation of the London Naval Treaty of 1936. "The war in Europe had caused several contracting
parties to suspend the treaty, for the obvious reason that it was impossible to limit naval armaments. The notice of
termination was therefore grounded on changed circumstances." David Gray Adler, The Constitution and the
Termination of Treaties 187 (1986).
41
International Load Line Convention, 40 Op. Att'y Gen. at 123.
42
See, e.g., Charlton v. Kelly, 229 U.S. 447,473 (1913); Escobedo v. United States, 623 F.2d 1098, 1106 (5th Cir.),
cert,
denied,
449 U.S. 1036 (1980).
43
In 1986, the United States suspended the performance of its obligations under the Security Treaty (ANZUS Pact),
T.I.A.S. 2493,3 U.S.T. 3420, entered into force April 29, 1952, as to New Zealand but not as to Australia. See
Marian Nash (Leich), I Cumulative Digest of United States Practice in International Law 1981-1988, at
1279-81.
13