For the I-9 form, you’ll need one document from List A (proving both identity and employment authorization), or a combination of one document from List B (identity) and one from List C (employment authorization). Here's the breakdown:
List A (Documents that establish both identity and employment authorization)
U.S. Passport
Permanent Resident Card (Green Card)
Employment Authorization Document (EAD)
List B (Documents that establish identity)
Driver’s license
State ID card
School ID card with a photograph
Voter’s registration card
List C (Documents that establish employment authorization)
Social Security Card
Birth Certificate
U.S. Citizen ID Card
Passport (if not used in List A)
Make sure the documents are original and unexpired!