Question

In the postwar period, the US was the leading nation in the creation of much of the systemic architecture of the global economy. Whether with military alliances, the Bretton Woods system (including the World Bank and the IMF), the GATT treaties and the WTO, the OECD, or even the United Nations, the US played a major role in the creation and maintenance of the rules by which countries interact. Yet recently, the US has been walking away from these rules and institutions. Why has this happened, and what are the implications if this continues?

Answer 1

the US has been walking away from these rules and institutions because the president of the country feels that all the other member countries of the organization use this as a tool to "screw United States"

Implications:

United States is one of the largest economies in the world and if it withdraw it's name from the organization, it would possibly cause other countries not to follow rules and regulations of the organization. This will hamper the decorum of the international organizations. If the United States exists WTO, other countries may increase tariffs against US. This will lead to an increase in prices of goods and services, customers will have very few choices available. It may also lead to trade wars among the countries.