US Reopens Border to Mexican Cattle Imports August 24

The United States announced on Friday, August 16, 2024, that it will reopen its border to Mexican cattle imports starting August 24, 2024. This decision comes more than a year after the U.S. Department of Agriculture (USDA) imposed a ban on these imports due to the spread of the New World screwworm in Mexico. The initial reopening will focus on the Douglas, Arizona border crossing, which directly connects to Agua Prieta in Mexico’s Sonora state. The USDA statement indicated that subsequent steps will be taken to reopen the Santa Teresa and Columbus border crossings in New Mexico, though specific dates for these were not provided. Despite the import ban, the screwworm parasite was detected in Texas and southeastern New Mexico as recently as last month, with over 30 cases reported to date in these U.S. regions. In Mexico, the screwworm outbreak was first identified in November 2024 and has since expanded to 29 out of the country's 32 states. Official figures indicate there are currently 1,792 active cases of the screwworm in Mexico. The New World screwworm is the larval stage of the Cochliomyia hominivorax fly, known for attacking warm-blooded animals, including humans, by feeding on their flesh. U.S. authorities have stated that the resumption of cattle imports from Mexico will be contingent upon compliance with a joint action plan. All imported animals will undergo thorough inspection within the United States to prevent the introduction of screwworm larvae. Mexican President Claudia Sheinbaum confirmed via social media that she received notification of this measure in a letter from U.S. Secretary of Agriculture Brooke Rollins. Sheinbaum also stated that Mexico will expedite its efforts to be prepared to resume cattle movement through Sonora and subsequently through the border state of Chihuahua, where five screwworm cases were recently documented. President Sheinbaum characterized the U.S. decision as an illustration of "dialogue, cooperation, and collaboration with mutual respect between Mexico and the United States." Secretary Rollins, in the USDA's official statement, affirmed that it is now considered safe to reopen the Arizona crossing. The Mexican livestock sector has estimated that the year-long suspension of cattle imports resulted in multimillion-dollar financial losses for the industry. The New World screwworm is a parasitic fly whose larvae infest the wounds of warm-blooded animals, causing significant tissue damage and potentially death. The USDA's Animal and Plant Health Inspection Service (APHIS) plays a crucial role in monitoring and controlling the spread of such pests to protect U.S. agriculture and animal health. The joint action plan likely involves enhanced surveillance, treatment protocols, and coordinated efforts between U.S. and Mexican veterinary and agricultural authorities to manage and eradicate the screwworm population.