We issue a variety of secure identity documents that may establish your identity, immigration status in the United States, authorization to work, or authorization to travel. These documents include your personal information, such as your full legal name, date of birth, country of birth, sex, and A-Number. If you are 18 years of age or older, you must always carry your Employment Authorization Document (EAD), Green Card, or other proof of alien registration in the United States with you.