Screwworm Fears Grow for Texas Rancher as U.S. Eyes Phased Border Reopening to Cattle

Texas ranchers and lawmakers warn of renewed New World screwworm risks, highlighting prevention efforts, border concerns, and the role of sterile flies in protecting U.S. livestock.

MERCEDES, TEXAS (RFD NEWS) — The threat of New World screwworm is once again raising concerns for U.S. cattle producers, particularly along the southern border. The pest, which caused devastating livestock losses during outbreaks in the 1960s and 1970s, remains a serious risk if reintroduced.

Recent discussions about reopening the southern border to Mexican feeder cattle have added to those concerns. Ranchers worry that increased cattle movement from affected regions could heighten the chances of the parasite spreading north.

“I think it’s a dangerous topic because, honestly, anytime you start moving cattle from down in an area that has those kinds of problems, I think it’s just going to not be good,” said Benton England of England Cattle Co. in Mercedes, Texas. “Everybody’s going to try to do their best, but at the same time, though, if they end up making it here, it’s going to be a devastating deal. I mean, very, very devastating for not only cattle ranchers, but also for the exotic and deer game guys.”

Lawmakers are pointing to proven methods to prevent an outbreak. One key strategy is the use of sterile flies, which have historically helped control screwworm populations.

“They’re releasing those into Mexico, which has helped the screw worm stay at bay,” said U.S. Rep. Monica De La Cruz (TX-15).

However, officials say more needs to be done domestically to ensure preparedness. On the other side of the aisle, Congressman Henry Cuellar (TX- 28) emphasized the urgency of expanding sterile fly production within the United States.

“So it’s not a matter of money. You know, it’s not Congress,” Rep. Cuellar explained. “You haven’t provided the money. We provided the money last year. And the appropriations, I added more money. [...] They do work, but we need so many millions of new sterile flies to prevent this problem from coming into the U.S.”

Producers on the ground remain cautiously optimistic, noting that while the solution is effective, it takes time to scale.

“Yeah, absolutely — 100% — I mean, they worked before,” England said. “It’s not gonna be a fast thing, but as long as we can keep pushing back, then it’ll work. I think the longer it goes on, the more it’ll be more readily usable, and they’ll be able to produce more, which they already are. You know, it’s just taking time to get everything going because it doesn’t happen overnight. A lot of the facilities they had burned down or weren’t in use for a long, long time.”

Ranchers are also using additional tools and strategies not available in previous decades to help protect their herds. With the very beautiful cattle they have here and are known for at England Cattle Co., Englandis taking a number of steps to make sure they are kept safe and healthy — and, of course, beautiful.

“Yes. So we have not only that, but also some other things we have now that we didn’t have before,” England said. “Whenever, like my grandfather, fought this issue way back there at our disposal, we have it ready on hand,” England added.

With the potential threat still looming, producers and policymakers alike say vigilance will be critical to keeping U.S. livestock safe and avoiding another widespread outbreak. Just this week, USDA’s APHIS updated their Response Playbook for New World Screwworm, saying it is crucual that their domestic plans are ready for activation.

LEARN MORE: APHIS New World Screwworm Response Playbook

Frank McCaffrey reporting for RFD NEWS.

Related Stories
For communities that depend on agriculture as their primary economic engine, the recession is not defined by headlines on Wall Street. It is defined by the quiet disappearance of the businesses that once processed, serviced, and supported the crop.
It’s National FFA Week, and today we’re celebrating Alumni Day by highlighting some inspiring former FFA members making an impact in agriculture and beyond.
Alan Bjerga of the National Milk Producers Federation discusses the Dairy Margin Coverage program, recent improvements, and what producers need to know ahead of this week’s enrollment deadline.
Glyphosate and phosphorus are deemed critical to U.S. national defense, ensuring farmers’ access while signaling a shift toward regenerative agriculture. RealAg Radio host Shaun Haney shares insight on the Trump Administration’s move and what it could mean for U.S. farmers moving forward.
UNL Extension’s Troy Walz discusses the Nebraska Ranch Practicum, where sessions are held, how producers can get involved, and what ranchers can gain from participating in the program.
The Ranger Road Fire in the Oklahoma Panhandle is now 65% contained after burning nearly 300,000 acres over the past week. Kevin Charleston of Specialty Risk Insurance Agency discusses wildfire recovery, livestock insurance considerations, and the importance of preparedness for producers across the Southern Plains.

RFD NEWS Correspondent Frank McCaffrey covers news from Texas, in the US-Mexico border region. He has provided in-depth coverage of immigration, the 2021 Texas freeze, the arrival of the New World screwworm, and Mexico’s water debt owed under a 1944 treaty.

LATEST STORIES BY THIS AUTHOR:

House Agriculture Chairman Glenn “GT” Thompson says the 2026 Farm Bill is bipartisan, with 82% of the bills incorporated into it receiving bipartisan support.
High beef prices are squeezing South Texas restaurants, but Texas Farm Bureau says consumer demand remains strong despite record costs.
According to the Louisiana Department of Agriculture and Forestry, fire crews remain on alert statewide as Red Flag conditions persist. Officials warn that even contained fires can reignite quickly under current weather conditions.
Stephenville FFA students showcase robotics skills at the San Antonio Stock Show, blending teamwork, technology, and competition for the next generation.
William Lee Golden joined us to talk about his farming roots, his storied career with the Oak Ridge Boys, and how his new book and music continue to reflect the values that have guided him throughout his life and career.
Claire Woeppel, Central Region Vice President with the National FFA Organization, joined us to discuss Alumni Day, the lasting impact of FFA supporters, and why honoring that legacy matters during National FFA Week.
Agriculture Shows
Hosted by Scott “The Cow Guy” Shellady and RFD News Markets Specialist Tony St. James, Commodity Talk delivers expert insight into the day’s ag commodity markets just before the CME opens. Only on RFD-TV and Rural Radio SiriusXM Channel 147.
A look at the news, weather and commodities headlines that drove agriculture markets in the past week.
Everything profits from prairie. Soil, air, water — and all kinds of life! Learn how you can improve your land with prairie restoration, cover crops and prairie strips, while growing your bottom line.
Special 3-part series tells the story of the Claas family’s legacy, which changed agriculture forever.