US Citizenship through Parents

Even though a child is born outside the U.S., the child automatically acquires U.S. citizenship if at least one parent was a U.S. citizen at the time of the child's birth
    
       •      If both parents were U.S. citizens at the time of a child's birth outside the U.S., and at least one parent had a prior residence in the U.S., the child automatically acquires U.S. citizenship.
       •       If only one parent was a U.S. citizen at the time of a child's birth outside the U.S., and that parent had previously resided in the U.S. for at least five years, with at least two of those years being after the age of 14, the child automatically acquires U.S. citizenship.