45 CFR §1626.7

1. (a)An alien seeking representation shall submit appropriate documents to verify eligibility, unless the only service provided for an eligible alien is brief advice and consultation by telephone, or by other non-in-person means, which does not include continuous representation of a client.
   1. (1)As proof of eligibility, a recipient may accept originals, certified copies, or photocopies that appear to be complete, correct, and authentic, of any documents establishing eligibility. LSC will publish a list of examples of such documents from time to time in the form of a program letter or equivalent.
   2. (2)A recipient may also accept any other authoritative document issued by DHS, by a court, or by another governmental agency, that provides evidence of alien status.
2. (b)A recipient shall upon request furnish each person seeking legal assistance with a current list of documents establishing eligibility under this part as is published by LSC.