Description: This report presents, first, a brief history, economic rationale, and legal background leading to the establishment of the U.S. Generalized System of Preferences (GSP) program, which provides non-reciprocal, duty-free tariff treatment to certain products imported from designated beneficiary developing countries (BDC's). A brief comparison of GSP programs worldwide, especially as they compare to the U.S. system, is also presented. Second, the report presents a discussion of U.S. implementation of the GSP, along with the present debate surrounding its renewal and legislative developments to date. Third, an analysis of the U.S. program's effectiveness and the positions of various stakeholders is presented. Fourth, implications of the expiration of the U.S. program and possible options for Congress are discussed.