https://www.uscis.gov/sites/default/...itizenship.pdf
For example, if the U.S. citizen, still having never resided in the United States, subsequently
marries another U.S. citizen who never resided in the United States, and they give birth to a child
outside the United States, the child will not acquire citizenship at birth under INA 301(c) because
neither U.S. citizen parent can show the requisite residence in the United States. However, if the
U.S. citizen parent had returned to the United States after his or her birth and established
residence before giving birth to the child outside the United States, then he or she may be able to
meet the residence requirement based on that period of residence and transmit U.S. citizenship
to his or her children.
Trump officials say children of some service members overseas will not get automatic citizenship
https://thehill.com/homenews/adminis...rseas-will-not
https://thehill.com/homenews/adminis...rseas-will-not
The new guidance will not apply to children who acquire citizenship at birth or while residing in the United States, the USCIS notice states. That includes children born abroad to U.S. citizens who have resided in the United States at some point in the past five years.