Executive Order 5549—Amendment to the Instructions to Diplomatic Officers Respecting Citizenship
Chapter X of the Instructions to Diplomatic Officers of the United States, entitled "Citizenship" is hereby canceled and the following substituted therefor:
X-l. Laws and procedure respecting citizenship
Embassies, legations, and other missions are hereby authorized to follow the instructions pertaining to citizenship set forth in Article X of the Consular Regulations.
The White House,
February 5, 1931.
Herbert Hoover, Executive Order 5549—Amendment to the Instructions to Diplomatic Officers Respecting Citizenship Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/361183