A deadly cattle pest called New World screwworm has been found in Texas, 60 years after it was effectively eradicated in the United States. Why it matters: The U.S. beef herd is already the smallest it's been in 75 years, and retail prices for the staple protein are at record highs. Catch up quick: The U.S. Department of Agriculture confirmed the case in Zavala County, Texas, late Wednesday and launched an emergency response. The industry long feared an infestation in the United States after