Section 1
SECTION 1. All Branches, offices, and subdivisions of the Government and all government-owned or controlled companies, authorized to contract and make disbursements for the construction or repair of public works, shall give preferences in awarding contract for such works to Filipino or American contractors and domestic entities when the lowest bid of a domestic bidder is not more than fifteen per centum in excess of the lowest foreign bid: Provided, however, That or the construction of land, air, and sea-coast defenses, arsenals, barracks, depots, hangars, landing fields, quarters, hospitals, and all other buildings and structures required for the national defense of the Philippines, no foreign bids shall be allowed.