Overview

• Commerce Department official Jeffrey Kessler informed TSMC, Samsung and SK Hynix that waivers allowing U.S. technology exports to Chinese plants will be revoked, citing national security concerns.
• Major U.S. chip stocks including Nvidia, Broadcom and TSMC fell as investors reacted to the unexpected export restriction plan.
• Nvidia previously reported an $8 billion sales hit after earlier AI chip export curbs on shipments to China.
• Analysts warn the waiver cancellations could speed the reshoring of semiconductor manufacturing under the 2022 CHIPS Act but trigger short-term disruptions and higher costs.
• The decision risks straining the fragile U.S.-China trade truce established in London and reshaping global AI chip competition.