; and (5) (A) identifies or develops effective intervention strategies focusing on enhancements to the built environment that promote increased use physical activity, access to nutritious foods, or other health-promoting activities by residents; and (B) in developing the intervention strategies under subparagraph (A), ensures that the intervention strategies will reach out to high-risk or vulnerable populations, including low-income urban and rural communities and aging populations, in addition to the general population. (d) Surveys The Secretary may allow recipients of grants under this section to use such grant funds to support the expansion of national surveys and data tracking systems to provide more detailed information about the connection between the built environment and health. (e) Priority In awarding grants under this section, the Secretary and the Administrator shall give priority to entities with programming that incorporates— (1) interdisciplinary approaches; or (2) the expertise of the public health, physical activity, urban planning, land use, and transportation research communities in the United States and abroad. (f) Authorization of appropriations There are authorized to be appropriated such sums as may be necessary to carry out this section. The Secretary may allocate not more than 20 percent of the amount so appropriated for a fiscal year for purposes of conducting research under subsection (c). . 1108. Tribal funding to research health inequities including COVID–19 (a) In general Not later than 6 months after the date of enactment of this Act, the Director of the Indian Health Service, in coordination with Tribal Epidemiology Centers and other Federal agencies, as appropriate, shall conduct or support research and field studies for the purposes of improved understanding of Tribal health inequities among American Indians and Alaska Natives, including with respect to— (1) disparities related to COVID–19