US Trade Representative Greer Seeks G20 Support for Tariff Strategy Against China

U.S. Trade Representative Jamieson Greer is using the G20 trade ministerial to build international support for the Trump administration's protectionist trade agenda. He is specifically targeting China's industrial overcapacity and challenging the World Trade Organization's Most Favored Nation principle.

A 28-nation coalition, primarily comprised of Western countries, formed on the sidelines of the summit to coordinate new tariffs against steel produced in China and other nations identified as sources of excess production capacity.

"When non-market policies and practices allow production to expand far beyond domestic demand, the consequences spill across borders. Excess production flows into global markets, putting pressure on producers and workers elsewhere," said Jamieson Greer, U.S. Trade Representative, in a statement.

Challenging the WTO Framework

Greer’s agenda includes a direct critique of the WTO’s MFN principle, which requires member nations to treat all other members equally regarding trade barriers. The U.S. position argues that this framework limits the ability of individual economies to protect domestic industries from state-subsidized competition.

"The MFN principle, particularly when applied unconditionally, constrains economies' ability to effectively respond to distortive policies and adapt to changing market conditions," Greer said.

Industrial Overcapacity and Trade Friction

The formation of the 28-nation steel coalition marks a shift toward multilateral cooperation on protectionist measures. By aligning these nations, the U.S. aims to create a unified front against market-distorting industrial practices. This strategy seeks to mitigate the impact of excess supply that the administration claims artificially depresses global prices for raw materials.

The administration's trade strategy is also creating friction with traditional allies. The U.S. has recently implemented a ban on imports of Canadian alcoholic beverages, motorcycles, and dairy products. This move marks an escalation in trade tensions with Ottawa that occurs alongside the broader G20 negotiations.

What Is at Stake

The U.S. effort to reshape trade norms represents a departure from the traditional application of the WTO’s non-discrimination rules. By framing industrial overcapacity as a systemic threat to global labor markets, the administration is attempting to shift the international consensus toward a more permissive view of targeted tariffs. This approach could alter the rules for global manufacturing and commodity trade.