may establish a negative preference of up to 10 percent of the cost of a contract for purposes of evaluating a bid or proposal of a contractor that makes a disclosure pursuant to subsection (a). (c) Sense of Congress It is the sense of Congress that agency contracting officers should, using section 2304(b)(3) of this title, exclude contractors making a disclosure pursuant to subsection (a) in response to solicitations issued by the agency from the bidding process in connection with such solicitations on the grounds that the actions described in the disclosures are against the public interests of the United States. (d) Annual report The head of each agency shall submit to Congress each year a report on the following: (1) The number of solicitations made by the agency during the preceding year for which disclosures were made pursuant to subsection (a) in responsive bids or proposals. (2) The number of contracts awarded by the agency during the preceding year in which such disclosures were taken into account in the contract award. . (B) Clerical amendment The table of sections at the beginning of chapter 137 of such title is amended by inserting after the item relating to section 2327 the following new item: 2327a. Contracts: consideration of outsourcing of jobs. . (2) Exclusion of firms from sources Section 2304(b) of such title is amended— (A) by redesignating paragraphs (3) and (4) as paragraphs (4) and (5), respectively