The G20 Trade Ministers’ Meeting in Milwaukee has highlighted differences among major economies over the future of global trade rules, including the World Trade Organization’s Most-Favoured-Nation principle, tariffs, industrial overcapacity and forced labour in supply chains.Key HighlightsG20 trade ministers are meeting in Milwaukee on September 30 and October 1.The US has placed four issues at the centre of its G20 trade agenda.These include MFN rules, forced labour, food trade and industrial overcapacity.India is represented by Commerce and Industry Minister Piyush Goyal.India supports a rules-based multilateral trading system with the WTO at its core.Brazil has called for WTO reform and universal trade rules.G20 Trade Meet Focuses on Global Trade RulesThe G20 Trade Ministers’ Meeting, hosted by US Trade Representative Jamieson Greer, has opened a broader discussion about how international trade should be governed.According to the US Trade Representative's office, the US presidency has identified four major workstreams: eliminating forced labour from global supply chains, addressing structural excess production and capacity, examining the Most-Favoured-Nation principle and addressing what Washington describes as the weaponisation of food trade.The discussions reflect different approaches among G20 economies to tariffs, trade restrictions and the role of existing multilateral institutions.US Pushes for Changes to Trade PrinciplesGreer has argued that longstanding trade rules need to be examined in light of current economic conditions. He specifically questioned whether the existing application of the MFN principle gives countries enough flexibility to respond to what they consider distortive trade practices.The MFN principle generally requires WTO members to provide the same trade advantage to one member that they provide to other members, subject to recognised exceptions.The US has also raised concerns about excess industrial capacity and government policies that it says can result in surplus production entering international markets.(READ MORE: US Trade Representative Greer Calls for New Global Trade Order at G20)India Supports WTO-Centred Trade SystemIndia has approached the G20 discussions with a focus on a rules-based, open, inclusive, transparent and non-discriminatory multilateral trading system.The Indian government has said the WTO should remain at the centre of the global trading framework while developing economies should retain adequate policy space.During the meeting, Commerce and Industry Minister Piyush Goyal also said countries should distinguish between the weaponisation of food supply chains and legitimate measures taken to address domestic food-security requirements.India's position comes as several major economies examine how trade rules should address supply-chain security, domestic policy objectives and changing global production patterns.Brazil Calls for WTO ReformBrazilian Development, Industry and Trade Minister Márcio Elias Rosa has also called for reform of the WTO.Rosa said discussions had reinforced the need for an effective multilateral trading system and argued that global trade should operate under rules that apply universally rather than becoming increasingly fragmented.Brazil has supported efforts to make the WTO more effective while discussions continue over the terms and scope of possible reforms.Industrial Overcapacity Becomes Key IssueIndustrial overcapacity, particularly in steel, has emerged as another major issue at the G20 trade discussions.The Global Forum on Steel Excess Capacity met alongside the G20 gathering, with discussions focused on production levels, trade remedies, supply-chain monitoring and transshipment.The US has argued that excess production resulting from non-market policies can put pressure on producers and workers in other countries. Other governments have different approaches to addressing industrial capacity and trade restrictions.G20 Trade Talks ContinueThe Milwaukee meeting comes as governments face broader questions over tariffs, supply-chain resilience and the future role of multilateral trade institutions.The discussions are expected to feed into the wider G20 process ahead of the leaders’ summit later this year. For India, the meeting also provides an opportunity to discuss bilateral trade relationships while presenting its position on global trade governance.The differences emerging at the G20 meeting do not represent a single agreed position among all members. Instead, the discussions highlight competing approaches to reforming existing trade rules and responding to changes in global commerce.