Flesh-eating screwworm horror hits US cattle, but Trump’s USDA was ready to fight

The New World Screwworm (NWS) recently was found in American cattle and has gone from a threat moving northward to a near and present danger for U.S. livestock producers. The most effective tool against NWS is also one of the simplest: releasing sterile flies that mate with wild screwworms and collapse the population over time. It is a proven strategy, but it requires planning, infrastructure, and international cooperation long before a crisis reaches our border.

As a row crop farmer who...