G-20 and International Economic Cooperation: Background and Implications for Congress [Updated October 4, 2019] [open pdf - 1MB]
From the Summary: "The Group of Twenty (G-20) is a forum for advancing international cooperation and coordination among 20 major advanced and emerging-market economies. The G-20 includes Argentina, Australia, Brazil, Canada, China, France, Germany, India, Indonesia, Italy, Japan, Mexico, Russia, Saudi Arabia, South Africa, South Korea, Turkey, the United Kingdom, and the United States, as well as the European Union (EU). G-20 countries account for about 85% of global economic output, 75% of global exports, and two-thirds of the world's population. [...] G-20 meetings primarily focus on international economic and financial issues, although related topics are also discussed, including development, food security, and the environment, among others. Congress exercises oversight over the Administration's participation in the G-20, including the policy commitments that the Administration is making in the G-20 and the policies it is encouraging other G-20 countries to pursue. Additionally, legislative action may be required to implement certain commitments made by the Administration in the G-20 process."
CRS Report for Congress, R40977
Congressional Research Service: https://crsreports.congress.gov/