Found it!
, and I think as far as I can see it is what I said in my previous post.
http://frwebgate.access.gpo.gov/cgi-bin/getdoc.cgi?dbname=2001_register&docid=01-14579-filed
What Is Meant by the Phrase ``Residing in the United States Pursuant to
a Lawful Admission for Permanent Residence''?
To qualify under the CCA, applicants must establish not only that
they have been admitted to the United States as lawful permanent
residents, but also that they are ``residing in'' the United States
pursuant to admission in such status. Admission in any immigrant
classification will satisfy the requirement that the applicant be
admitted to the United States as a lawful permanent resident. A more
difficult question is raised by the requirement that the applicant be
``residing in'' the United States. Under the section 101(a)(33) of the
Act, ``residence'' is defined as ``the place of general abode; the
place of general abode of a person means his principal, actual dwelling
place in fact, without regard to intent.'' On the other hand, in
certain circumstances, an alien with lawful permanent resident status
may live outside the United States without losing that status, and for
some purposes U.S. citizens living outside the United States are
considered to still have a residence in the United States.
The Service, in conjunction with the Department of State, is
reviewing the legal question of whether, and if so, under what
circumstances, a child with lawful permanent resident status who is
actually living outside the United States can be described as
``residing in'' the United States for purposes of the CCA. Until this
question is resolved, the Service and Department of State will only
document as a United States citizen a child in two instances. First,
the child will qualify if, on or after February 27, 2001, the child is
admitted as a lawful permanent resident and actually living in the
United States. Second, in the case of a child who was previously
admitted as a lawful permanent resident but was absent from the United
States on February 27, 2001, the child will qualify only if that child
returned to the United States after February 27, 2001 and was re-
admitted as a lawful permanent resident. The child must also be in the
legal and physical custody of the U.S. citizen parent. The Service and
Department of State, in the interim, will regard that child as residing
in the United States.