8 CFR § 338.3
Delivery of certificates
November 5, 2020
No Certificate of Naturalization will be delivered in any case in which the naturalized person has not surrendered his or her Permanent Resident Card to USCIS. Upon a finding that the card is destroyed or otherwise unavailable, USCIS may waive the surrender of the card and the Certificate of Naturalization shall then be delivered to the naturalized person.
[56 FR 50501, Oct. 7, 1991, as amended at 63 FR 70316, Dec. 21, 1998; 76 FR 53803, Aug. 29, 2011]