This article is from the FAQ, by with numerous contributions by others.
If your behavior is not well disposed to the good order and happiness
of the U.S. or if you concealed your wartime activities when applying
for visas to enter the U.S. after World War II. Also, for example you do
one of the following:
(a) Refusal to testify before a congressional committee regarding
alleged subversive activities within 10 years after becoming a
(b) Establish permanent foreign residence within 1 year after becoming
a U.S. citizen
Note from Rich Wales, email@example.com
This provision was repealed on October 25, 1994, by
Public Law 103-416 (108 Stat. 4305). The old require-
ment that candidates for US citizenship must intend to
reside permanently in the US following naturalization
was also repealed by this same law.
(c) Membership in an outlawed organization within 5 years after becoming
Denaturalization proceedings may be instituted against you for (a)-(c).
 Nancy-Jo Merritt, "Understanding Immigration Law," Makai Publishing group,
Scottsdale, Arizona, 1993.