1984 - Par. (1). Pub. L. 98-369 substituted ''increase the use of full and open competition in the procurement of property or services by the executive agency by establishing policies, procedures, and practices that assure that the executive agency receives a sufficient number of sealed bids or competitive proposals from responsible sources to fulfill the Government's requirements (including performance and delivery schedules) at the lowest reasonable cost considering the nature of the property or service procured;'' for ''increase the use of effective competition in procurement by the executive agency;''.