Buoyed by yet another blockbuster earnings report and a new U.S.-Taiwan trade agreement, Taiwan Semiconductor Manufacturing Co. is poised to accelerate its multibillion-dollar expansion in Arizona. The world's largest contract chipmaker has already committed $165 billion in the U.S., aligning with Washington's push to rebuild its domestic chip manufacturing. But TSMC executives have signaled that spending will rise even further as the company expands capacity to meet demand for artificial