The U.S. Department of Agriculture is preparing to reopen a New Mexico port to livestock trade next week after closing it over concerns about New World screwworm, a parasitic fly infestation. Agriculture Secretary Brooke Rollins said she planned to travel to New Mexico on Wednesday night. The USDA resumed cross-border livestock trade with Mexico in late August through a phased reopening that began in Douglas, Arizona. The agency currently lists two active screwworm infestations, both in Texas, involving one horse and one dog. Rollins said the Douglas experience showed the measures were manageable, while warning that trade would be halted again if another threat emerged.