(1) After January 1, 1975, no department, agency, or instrumentality of the United States shall undertake to acquire by ownership, rent, lease, or to otherwise occupy, in whole or in part, any building unless, after consultation with the head of such department, agency, or instrumentality and the State licensing agency, it is determined by the Secretary that
(A) such building includes a satisfactory site or sites for the location and operation of a vending facility by a blind person, or
(B) if a building is to be constructed, substantially altered, or renovated, or in the case of a building that is already occupied on such date by such department, agency, or instrumentality, is to be substantially altered or renovated for use by such department, agency, or instrumentality, the design for such construction, substantial alteration, or renovation includes a satisfactory site or sites for the location and operation of a vending facility by a blind person. Each such department, agency, or instrumentality shall provide notice to the appropriate State licensing agency of its plans for occupation, acquisition, renovation, or relocation of a building adequate to permit such State agency to determine whether such building includes a satisfactory site or sites for a vending facility.
(2) The provisions of paragraph (1) shall not apply
(A) when the Secretary and the State licensing agency determine that the number of people using the property is or will be insufficient to support a vending facility, or
(B) to any privately owned building, any part of which is leased by any department, agency, or instrumentality of the United States and in which,
(i) prior to the execution of such lease, the lessor or any of his tenants had in operation a restaurant or other food facility in a part of the building not included in such lease, and
(ii) the operation of such a vending facility by a blind person would be in proximate and substantial direct competition with such restaurant or other food facility except that each such department, agency, and instrumentality shall make every effort to lease property in privately owned buildings capable of accommodating a vending facility.