You meant to say that laws to prevent split citizenship parentage were only in place from 1907 to 1922.
And note that it was only from 1907 and 1922 that a woman with American citizenship automatically lost her citizenship when she married a foreign national.
“After 1907, marriage determined a woman’s nationality status completely. Under the act of March 2, 1907, all women acquired their husband’s nationality upon any marriage occurring after that date. This changed nothing for immigrant women, but U.S.-born citizen women could now lose their citizenship by any marriage to any alien. Most of these women subsequently regained their U.S. citizenship when their husbands naturalized.”
http://www.archives.gov/publications/prologue/1998/summer/women-and-naturalization-1.html
It is not as simple as you present it.
No, I meant to say that prior to 1922 it was NOT POSSIBLE to have split national parents. NO nation recognized the wife as having different citizenship from her Husband. In the case of divorce, her original citizenship could be reinstated, but as long as they were married she derived her citizenship from her Husband.
It is not as simple as you present it.
Nor as you present it. Dual national parents did not occur until 1922. How could anyone consider such a thing when it had never been done before?