What evidence we will ask for depends upon whether the child is living with you or with someone else. You will be asked to give the following evidence:
(a) If the child is living with you, your signed statement showing that the child is living with you.
(b) If the child is living with someone else--
(1) Your signed statement showing with whom he or she is living and why he or she is living with someone else. We will also ask when he or she last lived with you and how long this separation will last, and what care and contributions you provide for the child;
(2) The signed statement of the one with whom the child is living showing what care you provide and the sources and amounts of support received for the child. If the child is in an institution, an official there should sign the statement. These statements are preferred evidence. If there is a court order or written agreement showing who has custody of the child, you may be asked to give us a copy; and
(3) If you cannot get the preferred evidence described in paragraph (b)(2) of this section, we will ask for other convincing evidence that the child is in your care. [43 FR 24795, June 7, 1978, as amended at 73 FR 40967, July 17, 2008]