When the federal government has requested title to any lands acquired by the director under the provisions of sections 24-01-18.1 and 24-01-18.2 and the director certifies that the establishment of custom and immigration points of entry thereon will facilitate travel and promote public convenience or will avoid the need for additional road building, the governor is authorized to convey to the United States of America such sites as may be required for the location of such buildings and accessory facilities including means of access thereto.