12 CFR § 1268.3 - Asset requirement.
Assets that qualify as AMA shall be limited to the following:
(a) Whole loans that are eligible to secure advances under § 1266.7(a)(1)(i),
(ii), (a)(4), or (b)(1) of this chapter, excluding:
(1) Single-family mortgage loans where the loan amount exceeds the limits established pursuant to 12 U.S.C. 1717(b)(2), unless the loan is guaranteed or insured by an agency or department of the U.S. government, in which case the limits in 12 U.S.C. 1717(b)(2) do not apply; and
(2) Loans made to an entity, or secured by property, not located in a state;
(b) Whole loans secured by manufactured housing, regardless of whether such housing qualifies as residential real property under applicable state law;
(c) State and local housing finance agency bonds; or
(d) Certificates representing interests in whole loans if:
(1) The loans qualify as AMA under paragraphs (a) or (b) of this section and meet the nexus requirement of § 1268.4; and
(2) The certificates:
(i) Meet the credit enhancement requirements of § 1268.5;
(ii) Are issued pursuant to an agreement between the Bank and a participating financial institution to share risks consistent with the requirements of this part; and
(iii) Are acquired substantially by the initiating Bank or Banks.