08/07/1919
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"Consuls may issue, upon forms prescribed by the Department, certificates of registration good for one year, for use with the authorities of the place where the persons registered are residing."
"Except in cases of emergency no person shall be given a certificate of registration until his application for registration has been approved by the Department."
"Principal Consular Officers shall keep at their offices a Register of all American citizens residing in their several districts."
"The Secretary of State is authorized to make regulations concerning registration additional to these rules and not inconsistent with them."