However, the petition included a copy of a replacement Certificate of Citizenship, which was issued by the United States Citizenship and Immigration Services (hereinafter USCIS) on April 10 ...

In addition to the SS-5 form and accurate identity, age and citizenship information, you'll need to bring up to date information for anything you need to change on your replacement card.

If your birth certificate is missing, there are ways to get a replacement ... this can be used to establish your citizenship. If not, a U.S. passport can be used to establish proof.