There are TWO sources, one says 16, one says 14. EITHER WAY, Ann was 18 and didn’t qualify.
WRONG. I am going to tell you again...and ask that you stop posting misinformation. IF you are going to make that claim then be sure to tell people that it is only true if there was a VALID MARRIAGE.
A child born abroad to one U.S. citizen parent and one alien parent acquires U.S. citizenship at birth under Section 301(g) INA provided the citizen parent was physically present in the U.S. for the time period required by the law applicable at the time of the child's birth. (For birth on or after November 14, 1986, a period of five years physical presence, two after the age of fourteen is required.
For birth between December 24, 1952 and November 13, 1986, a period of ten years, five after the age of fourteen are required for physical presence in the U.S. to transmit U.S. citizenship to the child.