12 U.S.C. § 1701d: Exchange and assembly of housing and urban planning and development data; payment of expenses; acceptance of funds, services, facilities, materials, and other donations; approval of Secretary of State for international programs and activities

pay the expenses of participation in activities conducted under authority of this section including, but not limited to, the compensation, travel expenses, and per diem in lieu of subsistence of persons serving in an advisory capacity while away from their homes or regular places of business in connection with attendance at international meetings and conferences, or other travel for the purpose of exchange or assembly of data relating to housing and urban planning and development; but such travel expenses shall not exceed those authorized for regular officers and employees traveling in connection with said activities; and accept from international organizations, foreign countries, and private nonprofit foundations, funds, services, facilities, materials, and other donations to be utilized jointly in carrying out activities under this section. International programs and activities carried out by the Secretary under the authority provided in subsection (a) shall be subject to the approval of the Secretary of State for the purpose of assuring that such authority shall be exercised in a manner consistent with the foreign policy of the United States.