yes because it was born in the U.S
I could be wrong but I believe you are a legal citizen of wherever
it is that you are born? Did you mean that the child was born in
the US or outside of it?
Only if a child is born with in the United States is considered
legal. If the a child is born outside the United State is consider
an illegal alien.
If at least one of the parents is a legal US citizen (NOT a U.S.
resident, but a U.S. citizen), then any natural child of that
parent is a U.S. citizen, regardless of where the child was born. A
citizen child born outside the U.S. sovereign soil is not
considered "natural born", but the only
place in U.S. law
that this is relevant is for eligibility to be come President or
Vice President (i.e. only "natural born" citizens can become
Should a U.S. citizen adopt a child who is NOT a U.S. citizen
(i.e. either a straight adoption, or as a step-parent adoption),
then that child is eligible for U.S. citizenship via
Naturalization. Naturalization is not automatic, and requires a
legal procedure to be followed, generally taking a year or more. In
the mean time, the child is eligible for automatic U.S. Residency,
provided a basic Immigration form is filed to declare the child's
All of the preceding is true without regard to whom the other
parent is (or their immigration status).