Last month, the Biden administration proposed a rule to effectively sweep Chinese cars from the U.S. market. If enacted, the rule would ban the sale or import of any “connected vehicle” with certain Chinese technology. Today’s cars are essentially smartphones on wheels, equipped with increasingly sophisticated external connections, software, and sensors that constantly monitor the world around them. The administration rightly worries that Beijing could exploit these underlying technologies to turn American vehicles into unwitting surveillance vans for the Chinese Communist Party—or worse, to hijack them entirely.

Policymakers are slowly awaking to a rise in China’s cyber threat and the United States’ digital vulnerability. If there is a growing consensus to expand the country’s decoupling from Chinese tech, however, there is still no clear vision for how to do so responsibly.

Last month, the Biden administration proposed a rule to effectively sweep Chinese cars from the U.S. market. If enacted, the rule would ban the sale or import of any “connected vehicle” with certain Chinese technology. Today’s cars are essentially smartphones on wheels, equipped with increasingly sophisticated external connections, software, and sensors that constantly monitor the world around them. The administration rightly worries that Beijing could exploit these underlying technologies to turn American vehicles into unwitting surveillance vans for the Chinese Communist Party—or worse, to hijack them entirely.

Policymakers are slowly awaking to a rise in China’s cyber threat and the United States’ digital vulnerability. If there is a growing consensus to expand the country’s decoupling from Chinese tech, however, there is still no clear vision for how to do so responsibly.

Washington must soon move beyond ad hoc bans against specific apps (such as TikTok) and categories (such as connected vehicles) and articulate a broader policy that identifies clear risks and limiting principles to inform which Chinese technologies Washington can tolerate in the U.S. market, and which it cannot. Absent this, policymakers risk barreling toward an improvisational, potentially vast tech decoupling from China with poorly understood consequences for American consumers, industry, and foreign policy.

The absence of a clear risk mitigation framework for Chinese tech creates uncertainty for the businesses, factories, and farmers who rightly wonder if their Chinese-linked products and components will be the next mole that Washington decides to whack. Today’s vague and easily abused executive power to ban Chinese tech also gives Beijing pretext to justify its own arbitrary restrictions on the $154 billion of U.S. exports to its massive market.

Finally, a small but important detail of the proposed rule prohibits not only the sale of Chinese cars, but also their import. In effect, the United States would not only block China from selling us cars; it would also block exports from countries such as Brazil, Hungary, Indonesia, Mexico, and Thailand, where Chinese carmaker BYD plans to expand production.

As Washington broadens the scope of prohibited Chinese technologies beyond........

© Foreign Policy