 both the United States Postal Service and the Postal Rate Commission to independently report, 90 days after enactment of this Act, on the scope of existing authority of the US Postal Service, under title 39, United States Code, and title 39, Code of Federal Regulations, to introduce and provide new products and services (including the introduction and provision of new products and service on an experimental or market test basis) and to enter into negotiated service agreements with individual customers or groups of customers.