The United States is developing plans with Mexico, the European Union and Japan to implement minimum prices for critical minerals, the U.S. Trade Representative said Wednesday.

The Trump Administration is exploring a partnership with Mexico on critical minerals as part of a scheduled review of the United States-Mexico-Canada trade agreement (USMCA) by July 1.

Trade Representative Jamieson Greer said the potential partnership would “address global market distortions that have left North American critical minerals supply chains vulnerable to disruptions.”

Greer described Wednesday’s announcement with Mexico as an “action plan” to be implemented over the next 60 days.

The U.S. and Mexico will explore ways to implement price floors for critical mineral imports, and will discuss how to implement those minimum prices in agreements with other nations, an official in the Trade Representative’s office said.