04/13/1949
https://www.presidency.ucsb.edu...
"Now, Therefore, I, Harry S. Truman, President of the United States of America, do declare and proclaim:"
"Provided, that the enjoyment by any work of the rights and benefits conferred by the said title 17 shall be conditioned upon compliance with the requirements and formalities prescribed with respect to..."
"That as of this day the conditions specified in section (b) and 1(e) of title 17 of the United States Code exist and are fulfilled with respect to nationals of the Principality of Monaco, and that nat..."
"Whenever in the judgment of the Tariff Commission conditions of competition with respect to the trade in the imported article and the like or directly competitive domestic product concerned have so ch..."