; and (B) experience above-average housing costs. (e) Authorization of appropriations There is authorized to be appropriated to carry out this section $2,000,000,000 for each of fiscal years 2024 through 2029. 520O–2. Definitions In this subpart: (1) Mental and behavioral health The term mental and behavioral health means the health of an individual as it pertains to mental illness, drug abuse, alcohol abuse, and substance use disorders. (2) Unhoused individual The term unhoused individual has the meaning given the term homeless individual in section 103(a) of the McKinney-Vento Homeless Assistance Act. .