The reemergence of the New World screwworm, which poses significant health risks for livestock, has prompted the Department of Agriculture to halt cattle shipments from Mexico to the United States. The move marks at least the second time this year that cattle imports from Mexico have been suspended over the parasitic fly.

The U.S. Department of Agriculture has again halted imports of Mexican cattle into the United States due to the spread of the damaging livestock pest New World Screwworm in Mexico. Screwworms are parasitic flies whose females lay eggs in wounds on warm-blooded animals,

Another pause in US imports of Mexican cattle over screwworm, job losses and tomato tariffs were topics of Sheinbaum's Thursday presser.