... 1958, the Convention on the Nationality of Married Women entered into force the year after it was opened for signature. An effort to overcome conflict of laws issues respecting transnational marriages, the convention states in Article 1:
Each Contracting State agrees that neither the celebration nor the dissolution of a marriage between one of its nationals and an alien, nor the change of nationality by the husband during marriage, shall automatically affect the nationality of the wife.
It then proceeds to address related issues of marriage and nationality. To date it has 29 states parties; the United States has not signed, ratified, or acceded to the treaty.
(Prior August 11 posts are here, here, here, and here.)