Under today”s laws, one American citizen parent who meets the residency requirement is enough.
rxsid says: “The children of citizenS of the United States ..”
But it also says:
“persons whose fatherS (also plural) have never been resident in the United States”
Many people seem to be getting hung up on plurals. When you see parents, they are assuming it means both parents, but what they mean are all parents who are Natural Born Citizens. Note in above quote the word “fathers.” Do you think a child has two fathers? Again, they are talking about ALL fathers of a GROUP, if you will, who are Natural Born Citizens.