To apply for a second valid passport in person, you will need:
- Make ACS appointment;
- Complete DS-82 form online and bring it for the interview;
- Complete DS-4085 form online and bring it for the interview;
- Complete an affidavit (PDF 53 KB) attesting to the use of the second passport and bring it for the interview;
- Bring proof of U.S. citizenship (original and a copy): either your current valid passport or current second valid passport (in you already have one);
- Bring one photo;
- Pay the appropriate passport services fee.