By U.S. Secretary of Agriculture Brooke L. Rollins |
Recently, I visited the port of entry in Douglas, Arizona, which has been traversed by cattle nearly 150 years. Last year alone, over 57,000 live cattle were imported into the United States from Mexico through the port—that is, until we closed it in May 2025 to protect American livestock from the New World screwworm (NWS). Thanks to our round-the-clock efforts, in partnership with state and local animal health officials, it is now safe to begin a coordinated, phased reopening of southern cattle ports.
Every model showed NWS entering our country by late summer of 2025, but by increasing oversight of containment efforts in Mexico and strengthening border protections, we bought critical time to prepare. Since January 20, 2025, the Trump administration has invested a record $1.3 billion in emergency funding to combat the pest—one of the largest animal health responses in U.S. history.
Our defensive plan is robust. We have expanded the number of staff working on NWS by 1,000 percent, and over the past two months, we have conducted more than 1,000 drone flights observing over 21,000 wildlife in Texas. To prevent NWS from reproducing, we are also dropping 100 million sterile flies per week over Texas and Mexico. This spring at Moore Air Base in Texas, we opened a new sterile fly dispersal facility and broke ground on a sterile fly production facility. Last month, a production facility we helped upgrade in Metapa, Mexico, officially opened, and another facility we support in Panama is currently producing sterile flies at maximum capacity.
But we’re not stopping there. In Arizona, I announced a $25 million U.S. Department of Agriculture (USDA) investment to construct a brand-new sterile fly dispersal facility in the Grand Canyon state, which is coming into being thanks to the visionary leadership of Arizona’s own U.S. Representative Juan Ciscomani. Ranchers can rest assured that we are working with state officials to advance this project as soon as possible. Sterile flies were key to eliminating NWS from the U.S. in the 1960s, and they remain so today.
Just as important are surveillance and preparedness on the ground, which are led in Arizona by the Arizona Department of Agriculture, and in Texas by Governor Abbott, the Texas Animal Health Commission, and the Texas Parks and Wildlife Department. The Trump administration is reinforcing their efforts at every turn, including by ramping up outreach to producers and veterinarians and monitoring over 120 dedicated NWS traps and over 8,000 fruit fly traps along the border.
The results have been remarkable. Since the first confirmed case of NWS in the U.S. on June 3, the same month only saw 31 total cases within our borders, all of which are now inactive. Even better, July saw just 12 cases, and only 3 cases overall are active today. To put that in perspective, Mexico had over 30,000 cases last year alone. Clearly, our efforts are bearing fruit.
The fight is not over, but as the presence of NWS declines, so does the threat to our ranchers. That’s why it is now safe to reopen U.S. livestock ports of entry on our southern border, which have historically played a critical role in the American cattle trade—especially in recent years, as the U.S. cattle herd has reached a 75-year low. Live imports from Mexico make their way to U.S. feedlots and eventually end up on dinner tables across America.
The port in Douglas will be the first to reopen on August 24 due its low-risk profile and because the bordering Mexican state of Sonora remains the lowest-risk Mexican state for NWS and maintains some of the strongest livestock inspection and movement controls anywhere in Mexico. After evaluating the success of the initial reopening, we will then consider reopening the ports in Santa Teresa, New Mexico, and Columbus, New Mexico, to live cattle, bison, and horses.
Make no mistake, these reopenings are contingent on Mexico making continued forward progress and meeting all enhanced USDA requirements. Every animal entering the U.S. will fully comply with our comprehensive import protocol, which requires preventive treatment for NWS, multiple inspections before an animal approaches our border for import, and inspection by USDA for any trace of NWS.
If at any point we determine there is an imminent threat to our domestic herd, we will not hesitate to immediately pause the reopenings. Protecting American livestock will always come first, and we will continue using every tool at our disposal to support the ranchers who raise them and to eliminate NWS once and for all. Our nation’s food security—and, therefore, our freedom—depend on it.
Brooke Rollins serves as the U.S. Secretary of Agriculture
