When the world’s largest computer chip maker pledged to pump $40 billion into a production hub in Phoenix, it sparked optimism that the United States would remain a world leader in tech. But the huge investment has been slowed due mainly to “an insufficient amount of skilled workers,” according to Taiwan Semiconductor Manufacturing Company chairman Mark Liu, who complained that his company would have to fly in “experienced technicians from Taiwan to train local workers.” He’s not alone in his concern. A recent report commissioned by the U.S. Department of Energy found that the U.S. is losing its competitive advantage...