Citizens or nationals of other countries

(A) In general The term “dependent” does not include an individual who is not a citizen or national of the United States unless such individual is a resident of the United States or a country contiguous to the United States.

(B) Exception for adopted child Subparagraph (A) shall not exclude any child of a taxpayer (within the meaning of subsection (f)(1)(B)) from the definition of “dependent” if— (i) for the taxable year of the taxpayer, the child has the same principal place of abode as the taxpayer and is a member of the taxpayer’s household, and (ii) the taxpayer is a citizen or national of the United States.