Since 1998, the term normal trade relations (NTR) has replaced most favoured nation in all U.S. statutes. This change was included in section 5003 of the Internal Revenue Service Restructuring and Reform Act of 1998 (P.L. 105-206). However, Title IV of the Trade Act of 1974 (P.L. 93-618) established conditions on U.S. MFN/NTR tariff treatment to certain non-market economies, one of which is certain freedom-of-emigration requirements (better known as the Jackson-Vanik amendment). The act authorizes the president to waive a country's full compliance with Jackson-Vanik under specified conditions, and this must be renewed by June 3 of each year. Once the president does so, the waiver is automatic unless Congress passes (and avoids or overturns a presidential veto of) a disapproval resolution.