All laborers and mechanics employed by contractors and subcontractors (excluding tribes and tribal organizations) in the construction, alteration, or repair, including painting or decorating of a building or other facilities in connection with construction projects funded by the United States under this subchapter shall be paid wages at not less than those prevailing wages on similar construction in the locality as determined by the Secretary of Labor in accordance with sections
3141–3144,
3146, and
3147 of title
40. With respect to construction alteration, or repair work to which sections
3141–3144,
3146, and
3147 of title
40 are applicable under this section, the Secretary of Labor shall have the authority and functions set forth in the Reorganization Plan numbered 14, of 1950, and section
3145 of title
40.