American farmers have won hard-earned victories on the regulatory front and on tax reform over the past year, but still face stiff challenges in trade and in passing a new farm bill, the president of the American Farm Bureau Federation said last week.

“We have had a seat at the table with the Trump administration,” Zippy Duvall, AFBF president, told nearly 7,000 farmers and ranchers in his address at the organization’s annual convention in Nashville, Tennessee, a day before President Donald Trump...