in the United States (including the cost of shipping) and the cost of acquiring the articles, materials, or supplies from a firm manufacturing the articles, materials, or supplies outside the United States (including the cost of shipping). . 4. Criteria required for use of public interest exception (a) Buy American Act Section 8302 of title 41, United States Code, as amended by section 3, is further amended by adding at the end the following new subsection: (d) Criteria for use of public interest exception In determining whether a public interest exception shall be applied under subsection (a), the head of a Federal agency shall— (1) consider the short-term and long-term effects of applying such exception on employment within the United States, taking into account information provided by entities that manufacture the articles, materials, or supplies concerned in the United States