New World Screwworm Threat WASHINGTON — The United States Cattlemen’s Association (USCA) expressed its sincere appreciation for the U.S. Department of Agriculture’s (USDA) decisive action to close live animal imports at the southern border, in response to the surge of New World Screwworm (NWS) cases across Mexico. This is an issue USCA members share widely … Continue reading New World Screwworm Threat