Alien enemies. To deny admission to United States of certain aliens and to reduce immigration (piotas, hearings. 79th Congress, 2d session, on H. R. 3663. to amend immigration and naturalization laws to deny admission to United States of certain aliens who have served in armed forces of countries at war with United States, also members of certain parties and organizations, and to deny naturalization to such persons, and to reduce immigration quotas.