The U.S. could further tighten restrictions on China’s access to chip technology critical for artificial intelligence. The Biden administration is weighing actions that would target high-tech chip architecture known as gate all-around. South Korea’s Samsung Electronics has already started production for 3-nanometer chips with GAA technology. Taiwan Semiconductor Manufacturing Company reportedly plans to include GAA in its upcoming 2-nanometer chips. Earlier this year, the Dutch government barred chip equipment maker ASML from exporting some of its tools to China.