Trade issues are certainly nothing new for farmers in Iowa and around the country.

But the future of agriculture trade has grown even more cloudy since the Trump administration scuttled the proposed Trans-Pacific Partnership (TPP) in early 2017 and has launched a full-scale review of the North American Free Trade Agreement (NAFTA). The TPP, ag economists said, had the potential to open key Asian markets for U.S. meats and other goods. NAFTA has helped Mexico develop...