Iowa exports of ethanol, pork and corn could be targeted in sanctions after the World Trade Organization (WTO) last week issued its final ruling that U.S. country-of-origin meat labeling (COOL) requirements violate in­­ternational trade obligations.

Livestock farmers, who have been troubled by the meat labeling statute for more than a decade, urged Congress to repeal the statute before sanctions are put into place. Exports consumed 27 percent of total U.S. pork production and 14 percent of beef production last year.

"We cannot afford to have exports disrupted," Iowa hog farmer John Weber of Dysart said at a...