State laws presume that a child born in wedlock is the natural legitimate child of
the mother's husband. If the mother's marriage ended before the child's birth, State
laws generally presume that the child is the natural legitimate child of her husband
at the time of conception.
The rules concerning the presumption of legitimacy and the evidence necessary to rebut
it vary from State to State. See GN
00306.001 for which State law to apply.
If the child was conceived during one marriage and born during a later one, and you
have no precedent opinion, submit the question to the RCC under GN 01010.815 ff., unless the child can qualify as a stepchild.