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
Shaun Haney with Real Ag Radio joined us to break down the USMCA review and what Canadian producers and exporters should be watching in the months ahead.
USDA Undersecretary Dr. Mindy Brashears provides more insight on the updated “Product of USA” label campaign and the USDA’s goals for both consumers and producers.
Fertilizer relief may be limited despite the reopening of the Strait of Hormuz this week. AgriSompo’s Brooks York discusses marketing strategies, crop insurance considerations, and other tips for producers navigating volatility this planting season.
$2 million project tests fogging system to stop the virus in poultry facilities
Overall, the report suggests a shift toward more comfortable supply levels, with demand emerging as a key factor to watch in the months ahead.
Tidal Grow’s Align-N system delivers urea nitrogen directly to leaves, improving nutrient efficiency and boosting crop yields for farmers.

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:

Farm CPA Paul Neiffer joined us to break down the application process for Stages 1 and 2 of the USDA’s Supplemental Disaster Relief Program, and what farmers can expect as the deadline approaches.
Dr. Jeffrey Gold with the University of Nebraska joined us to explain public health in rural communities and highlight resources residents can access to stay healthy
ASFMRA’s Howard Halderman gives an update on Corn Belt farmland values, buyer activity, and what to expect for the rest of 2026 as geopolitical tensions and bridge payments move
Farmers this year will finally be able to update their base acres with the USDA, something that experts warn must be done with complete accuracy.
Fewer interruptions could translate to improved efficiency—and fewer costly delays when timing matters most.
K-State’s Dr. Gregg Ibendahl breaks down the impacts of the Middle East ceasefire on energy markets and input costs, and what farmers should watch in the weeks ahead.
Agriculture Shows
Featuring members of Congress, federal and state officials, ag and food leaders, farmers, and roundtable panelists for debates and discussions.
RFD-TV has partnered with a handful of agricultural social media influencers whom we have dubbed The New Crop. These folks have taken to the internet to tell their stories and to raise awareness of where our food comes from and all that goes into feeding the world population.
The goal of “Where the Food Comes From” is as simple as its name implies — host Chip Carter takes you along on the journey of where our food comes from — and we don’t just mean to the supermarket (though that’s part of the big picture!). But beyond where it comes from, how it gets there, and all the links in the chain that make that happen.
Join markets specialist Scott Shellady, better known as the Cow Guy, as he covers the market-close, breaking down headlines that drive the commodities and equities markets with commentary from respected industry heavyweights.