This involves as its principal and culminating event the taking in open court by the applicant of an oath: "(1) to support the Constitution of the United States; (2) to renounce and abjure absolutely and entirely all allegiance and fidelity to any foreign prince, potentate, state, or sovereignty of whom or which the petitioner was before a subject or citizen; (3) to support and defend the Constitution and the laws of the United States against all enemies, foreign and domestic; (4) to bear true faith and allegiance to the same; and (5)(A) to bear arms on behalf of the United States when required by the law, or (B) to perform noncombatant service in the Armed Forces of the United States when required by the law, or (C) to perform work of national importance under civilian direction when required by law."[1053] Any naturalized person who takes this oath with mental reservations or conceals beliefs and affiliations which under the statute disqualify one for naturalization, is subject, upon these facts being shown in a proceeding brought for the purpose, to have his certificate of naturalization cancelled.[1054] Furthermore, if a naturalized person shall within five years "following his naturalization become a member of or affiliated with any organization, membership in or affiliation with which at the time of naturalization would have precluded such person from naturalization under the provisions of section 313, it shall be considered prima facie evidence that such person was not attached to the principles of the Constitution of the United States and was not well disposed to the good order and happiness of the United States at the time of naturalization, and, in the absence of countervailing evidence, it shall be sufficient in the proper proceeding to authorize the revocation and setting aside of the order admitting such person to citizenship and the cancellation of the certificate of naturalization as having been obtained by concealment of a material fact or by willful misrepresentation. * * *" [1055] RIGHTS OF NATURALIZED PERSONS