Trump administration officials are attributing a resurgence of the New World screwworm parasite to the immigration policies of the Biden administration.
The outbreak threatens the U.S. beef and cattle industry, which relies on the absence of this parasite to maintain livestock health and market stability. Because the parasite attacks living tissue, its return could cause significant economic disruption for ranchers.
Agriculture Secretary Brooke Rollins and other officials said the outbreak resulted from lax border policies under the previous administration. They said that these policies allowed the parasite to re-enter the country [1], [5].
Confirmed cases have appeared in Texas and one neighboring state [3], [4]. Reports indicate there are six confirmed screwworm cases across those two states [3]. This marks a significant reversal in biosecurity, as the New World screwworm had been eradicated in the United States since the 1960s [1].
While administration officials point to the border, other reports indicate that the available data does not clearly support the link between immigration policy and the parasite's spread [3]. The discrepancy has led to a conflict between official statements and the data regarding the cause of the invasion [3].
The parasite's return is particularly concerning given the scale of the cattle industry in the affected regions. Officials are now working to contain the spread to prevent a wider agricultural crisis.
“The New World screwworm was eradicated in the United States since the 1960s”
The emergence of the New World screwworm creates a dual crisis: a biological threat to the American livestock economy and a political flashpoint regarding border security. While the agricultural impact is quantifiable through the six confirmed cases, the debate over the cause reflects a broader struggle to assign accountability for biosecurity failures between two different presidential administrations.
