Tyson Foods announced on Friday that it will close a major beef plant in Nebraska in January amid a decline in U.S. cattle supplies. The meatpacking giant is set to close a plant in Lexington, Nebraska, with about 3,200 employees. The company also said it will scale back its operations at a beef plant in Amarillo, Texas, moving to a single, full-capacity shift in a move that will affect about 1,700 workers.Those changes are expected to take effect around Jan. 20, and the company said it will increase produc ...