Mexico and South Korea are racing for American beef and pork. In 2017 alone, the U.S. shattered records with beef exports hitting $7.27 billion and pork exports reaching $6.49 billion, according to the U.S. Meat Export Federation. For my home state of Iowa, one of the largest producers in the United States of both, this trend is keeping Iowans employed and the rural economy strong.

What’s driving this acceleration in demand? To start, our farmers and ranchers offer a high-quality product that people crave and trust. But more broadly, this demand and export growth does not happen without the right regulatory policies and trade deals in place.

Recent headwinds...