Among the original GATT members, Syria, Lebanon and the LICO Yugoslavia have not re-joined the WTO. Given that Yugoslavia (renamed in Serbia and Montenegro and later two shared accession negotiations) is not recognised as a direct successor to the SFRY; Therefore, its application is considered new (non-GATT). On 4 May 2010, the WTO General Council decided to set up a working group to review Syria`s application for WTO membership.   The WTO parties terminated the 1947 GATT formal agreement on 31 December 1995. Montenegro became a member in 2012, while Serbia is in the decision-making phase and is expected to become a member of the WTO in the future. The United States is the most active participant in the system after filing 124 complaints and being defendants in 156 cases. China has become a particular goal for U.S. policymakers, who have increasingly taken advantage of the WTO process to challenge chinese government support for domestic industries, import restrictions, intellectual property abuse and other state-led trade policies. Between 2009 and 2017, the United States, under President Barack Obama, brought 25 WTO cases, more than any other country during this period; Sixteen of them were aimed at China.
The Obama administration won seven of its WTO proceedings against China, including those that challenged China`s agricultural and aeronautical subsidies and steel import duties; several others are in progress. The third provision was added in 1965 and was aimed at developing countries that join the GATT. Developed countries have agreed to eliminate tariffs on imports from developing countries in order to stimulate these economies. Lower tariffs have also benefited industrialized countries. As THE GATT has attracted middle-class consumers worldwide, the demand for trade with industrialized countries has increased. Part of the WTO`s non-discrimination mandate is the status of the Most Favoured Nation (MFN). The status of the most favoured nation requires that a WTO member apply the same conditions for trade with all other WTO members. In other words, if a country gives a special favour to another country (including a non-WTO member), any other WTO member must receive the same treatment. You probably saw a version of the most favoured child status when an adult told you that if you were taking chewing gum or candy to school, you should bring enough for everyone. In other words, you couldn`t just give chewing gum or candy to your best friends, and if you didn`t have enough for everyone in the class, no one would get it. This is indeed how the nation`s most privileged status works.
The GATT came into force on January 1, 1948. From the beginning, it was refined, which eventually led to the creation, on 1 January 1995, of the World Trade Organization (WTO), which absorbed and expanded it. To date, 125 nations signed their agreements, which covered about 90% of world trade. , has succeeded in reducing tariffs. Average tariff levels for large GATT participants were about 22% in 1947, but were 5% after the Uruguay Round of 1999.  Experts attribute some of these tariff changes to the GATT and the WTO.    In the end, tariffs decreased by an average of 35%, with the exception of textiles, chemicals, steel and other sensitive products; In addition to a 15% to 18% reduction in tariffs on agricultural and food products. In addition, the chemical negotiations resulted in an interim agreement on the abolition of the US selling price (ASP).