Under Sec. 301 of the INA, a person born outside the United States to two married U.S. citizens is a U.S. citizen if at least one of the parents has resided in the U.S. at any time. However the State Department applies this provision only if the child has a biological relationship with both married parents. Otherwise it applies Sections 309 and 301(g) of the INA that govern when a child born out of wedlock is a citizen. In that case, the father must have lived in the U.S. for 5 years for the child to be a citizen.
The complaint alleges:
On information and belief, State Department officials are highly unlikely to ask different-sex parents who are identified as legal parents (e.g., on a child’s birth certificate) if their child is, in fact, biologically related to both legal parents. In contrast, same-sex parents will always trigger an investigation, and consular officials routinely ask same-sex parents for specific evidence of a biological tie and/or about the use of assisted reproductive technology.CNN reports on the lawsuit.