; Tribal organization The terms Indian Tribe and Tribal organization have the meanings given such terms in section 4 of the Indian Self-Determination and Education Assistance Act ( 25 U.S.C. 5304 ) and shall include tribally designated housing entities (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 )) and entities that serve Native Hawaiians (as such term is defined in section 338K(c) of the Public Health Service Act ( 42 U.S.C. 254s(c) )). (C) Person experiencing homelessness The term person experiencing homelessness has the same meaning as the terms homeless , homeless individual , and homeless person as those terms are defined in the McKinney-Vento Act ( 42 U.S.C. 11302 ). (D) Substance use disorder The term substance use disorder means the disorder that occurs when the recurrent use of alcohol or drugs, or both, causes clinically significant impairment, including health problems, disability, and failure to meet major responsibilities at work, school, or home. (d) Authorization of appropriations There is authorized to be appropriated to carry out this section, $20,000,000 for each of fiscal years 2023 through 2028, of which not less than 5 percent of such funds shall be awarded to Indian tribes and tribal organizations.