; rebuttal An individual identifying as Black, Hispanic, Native American, or Asian American, or any combination thereof, shall be presumed to be socially disadvantaged for purposes of clause (i). Such presumption may be rebutted with credible evidence to the contrary. (iii) Burden of proof An individual who does not identify as described in clause (ii) shall be required to establish individual social disadvantage for purposes of clause (i) by a preponderance of the evidence. (iv) Rules The Secretary may issue regulations as necessary to establish procedures for complying with this subparagraph. (B) Economic disadvantage The individual has an income that meets the requirements under section 3(a). (11) State The term State means any State of the United States, the District of Columbia, the Commonwealth of Puerto Rico, the United States Virgin Islands, Guam, the Commonwealth of the Northern Mariana Islands, American Samoa, and the tribal government of any Indian tribe, as such term is defined in section 4 of the Native American Housing Assistance and Self-Determination Act of 1996 ( 25 U.S.C. 4103 ). 11. Implementation The Secretary shall have the authority to establish by notice or mortgagee letter any requirements that the Secretary determines are necessary for timely and effective implementation of the program and expenditure of funds appropriated, which requirements shall take effect upon issuance. 12. Authorization of appropriations There is authorized to be appropriated for grants under this Act $100,000,000,000, and any amounts appropriated pursuant to this section shall remain available until expended.