US lawmakers move to tighten AI chip export limits to China

US lawmakers are moving toward stricter limits on advanced AI chip exports to China following the resignation of Nvidia CEO Jensen Huang amid a spy scandal, with House Speaker Mike Johnson citing growing congressional consensus on the issue. Chinese AI shares fell sharply on Friday as investors feared Huang's departure could accelerate US restrictions on chip access, deepening the technology divide. Johnson said he favored limiting China's access to advanced technology, while lawmakers from both parties have proposed at least four bills targeting chip exports, including measures to track processors and restrict remote access. Huang stepped down after reports of a relationship with a Chinese businesswoman suspected by US authorities of spying, which Beijing denies. Congressional scrutiny of Nvidia is expected to continue, with Huang slated to testify before Congress before Thanksgiving, and officials also discussing whether Commerce Secretary Howard Lutnick should be removed.