11/25/1951
https://www.presidency.ucsb.edu...
"The said Executive Order No. 6444 of November 25, 1933, is modified accordingly."
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"No permit to enter shall be issued to an alien if it appears to the satisfaction of the issuing officer, or the Secretary of State, that the alien's entry would be prejudicial to the interests of the ..."
"Notwithstanding the provisions of the foregoing paragraphs (a) and (b), no alien applying for admission, even with a valid permit to enter, shall enter or be permitted to enter the United States if it..."