Looking at customs import statistics alone is insufficient because many chips undergo testing, assembly, or transshipment through third countries before reaching the U.S., making the source appear diversified on the surface when actual manufacturing may be concentrated in Taiwan. Research by the U.S. International Trade Commission (USITC) using supply chain tracking technology to uncover the true origin of "indirect imports" reveals that approximately 44.2% of U.S. imported logic chips are manufactured in Taiwan, while memory chips account for about 24.4%. This exposure figure is far higher than the intuitive impression from general import statistics, indicating that the U.S. cannot easily sever its dependence on Taiwan's high-end chips in the short term. This is a fundamental premise that cannot be overlooked when assessing the feasibility of any localization policy.