The U.S. has again ceased livestock imports from Mexico related to the presence of the parasitic New World screwworm fly closer to the border.

Secretary Rollins takes decisive action and shuts down U.S. Southern border ports to livestock trade due to further northward spread of New World screwworm in Mexico.

The U.S. has shut its southern border to livestock imports again after a flesh-eating parasite was found further north in Mexico than previously reported, raising alarm among American agriculture officials.