The president-elect of the National Pork Producers Council is confident the U.S. can prevent the introduction of African swine fever. Wisconsin pork producer A.V. Roth points to another foreign animal disease that’s been kept at bay by the Department of Agriculture for nearly a century. “USDA has kept out Foot and Mouth for the past 90 years, so I’m very confident.” But he tells Brownfield a career in farming has taught him nothing is certain. To that end, Roth has gone to great lengths to protect his herd.