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] Sec. 338.4 [Reserved]