How China’s Chokehold on Drugs, Chips and More Threatens the U.S.

BEIJING—China has demonstrated it can weaponize its control over global supply chains by constricting the flow of critical rare-earth minerals. President Trump went to the negotiating table when the lack of Chinese materials threatened American production, and he reached a truce last week with Chinese leader Xi Jinping that both sides say will ease the flow of rare earths.

But Beijing’s tools go beyond these critical minerals. Three other industries where China has a chokehold—lithium-ion batteries, mature chips and pharmaceutical ingredients—give an idea of what the U.S. would need to do to free itself fully from vulnerability.