U.S. Agriculture Secretary Brooke Rollins on Sunday said she is suspending imports of live cattle, horses and bison through the southern U.S. border over the damaging pest New World screwworm, a measure that immediately drew opposition from Mexico.

The United States will suspend Mexican exports of live cattle for 15 days to review the joint strategy in the fight against the screwworm, Mexico’s Agriculture Secretary Julio Berdegué said on social

Agriculture Secretary Brooke Rollins called the safety of the nation’s food supply "a national security issue of the utmost importance."