Chipmaking giant Taiwan Semiconductor (TSMC) has delayed the start of production at its factory in the US state of Arizona, in a setback to President Biden's technology ambitions. The firm says chip manufacturing will no longer start next year, due to a shortage of skilled workers...TSMC Chairman Mark Liu said the plant, which has been under construction since April 2021, faced a shortage of workers with the "specialised expertise required for equipment installation in a semiconductor-grade facility."