[raevsky]

http://foia.state.gov/masterdocs/07fam/07m1330.pdf

7 FAM 1335 USE OF A FOREIGN PASSPORT
(CT:CON-67; 1-24-97)
a. The Department discourages the use of foreign passports by citizens of
the United States. A person eligible for documentation as a U.S. citizen
who applies for, receives, and travels with a foreign passport may
experience difficulties in receiving consular protection abroad.
b. It is recognized, however, that in certain instances citizens must use
foreign passports in completing proposed travel. Such situations arise
frequently under the following circumstances:
(1) When U.S. citizens, whether born in the United States or
naturalized, are required by the laws of a foreign country, of which
they are also citizens or nationals, to obtain and use a passport of
that country for entering and departing that country;
(2) When citizens of the United States are under 21 years of age and
are members of the household of an official or employee of a
foreign government or of the United Nations and are in possession
of or included in a foreign passport; and
(3) When a child under 12 years of age is included in the foreign
passport of an alien parent and is traveling with that parent;
however, such child will be required to provide evidence of U.S.
citizenship when entering the United States (22 CFR 53.2(f)).
c. Under Section 215(b) INA (8 U.S.C. 1185(b)), it is unlawful, except as
otherwise provided, for a U.S. citizen, even when carrying a foreign
passport, to enter and depart the United States without a valid U.S.
passport. 22 CFR 53.2 provides the exceptions to this requirement.

http://edocket.access.gpo.gov/cfr_20.../22cfr53.2.pdf

§ 53.2 Exceptions.
A U.S. citizen is not required to bear
a valid passport to enter or depart the
United States:
(a) When traveling directly between
parts of the United States as defined in
§ 50.1 of this chapter;
(b) When traveling between the
United States and any country, territory,
or island adjacent thereto in
North, South or Central America excluding
Cuba; provided, that this exception
is not applicable to any such
person when proceeding to or arriving
from a place outside the United States
for which a valid passport is required
under this part if such travel is accomplished
within 60 days of departure
from the United States via any country
or territory in North, South or Central
America or any island adjacent thereto;
(c) When traveling as a bona fide seaman
or air crewman who is the holder
of record of a valid merchant mariner
identification document or air crewman
identification card;
(d) When traveling as a member of
the Armed Forces of the United States
on active duty;
(e) When he is under 21 years of age
and is a member of the household of an
official or employee of a foreign government
or of the United Nations and
is in possession of or included in a foreign
passport;
(f) When he is a child under 12 years
of age and is included in the foreign
passport of an alien parent; however,
such child will be required to provide
evidence of his U.S. citizenship when
entering the United States;
(g) When the citizen entering the
United States presents a card of identity
and registration issued by a consular
office abroad to facilitate travel
to the United States; or
(h) When specifically authorized by
the Secretary of State through appropriate
official channels to depart from
or enter the United States, as defined
in § 50.1 of this chapter. The fee for a
waiver of the passport requirement
under this section shall be collected in
the amount prescribed in the Schedule
of Fees for Consular Services (22 CFR
22.1).
[31 FR 13546, Oct. 20, 1966, as amended at 37
FR 11459, June 8, 1972; 51 FR 26247, July 22,
1986]