8 CFR § 322.5 - Decision.
(a) Approval of application. If the application for certificate of citizenship is approved, after the applicant takes the oath of allegiance prescribed in 8 CFR 337.1 (unless the oath is waived), USCIS will issue a certificate of citizenship. The child is a citizen as of the date of approval and administration of the oath of allegiance.
(b) Denial of application. If the USCIS decision is to deny the application for a certificate of citizenship under this section, the applicant will be furnished with the reasons for denial and advised of the right to appeal in accordance with the provisions of 8 CFR 103.3(a). An applicant may file an appeal within 30 days of service of the decision in accordance with the instructions on the form prescribed by USCIS for that purpose, and with the fee required by 8 CFR 106.2.
(c) Subsequent application. After an application for a certificate of citizenship has been denied and the time for appeal has expired, USCIS will reject a subsequent application submitted by the same individual and the applicant will be instructed to submit a motion for reopening or reconsideration in accordance with 8 CFR 103.5. The motion must be accompanied by the rejected application and the fee specified in 8 CFR 106.2.