TAIPEI — TSMC is seeing strong, multi-year demand for its AI chips as it invests a further $100 billion to expand its Arizona facilities, but it needs to address several challenges, such as a shortage of construction workers there, a top executive said. Speaking after blockbuster second-quarter results on Thursday, Chief Financial Officer Wendell Huang said the company is "very happy" with progress in Arizona, which is why it decided to ramp up investment to $265 billion. "We will continue to invest," he said in an interview, adding that the company was very grateful for U.S. government support. "We continue to see customers' strong demand — multi-year structural demand." The world's main producer of advanced AI chips and a major Nvidia supplier, TSMC's aggressive capital spending and soaring profit margins have made it a barometer of demand in the global semiconductor industry. The pledge to expand in Arizona is a win for U.S. President Donald Trump, who has pushed for more chipmaking at home. Trump has repeatedly accused Taiwan of stealing American semiconductor business. He has said