Nvidia’s chief security officer has published a blog post insisting that its GPUs “do not and should not have kill switches and backdoors.” It comes amid pressure from both sides of the Pacific, with some US lawmakers pushing Nvidia to grant the government backdoors to AI chips, while Chinese officials have alleged that they already exist.

Nvidia reiterated that its chips don’t—and shouldn’t—have back doors or kill switches, days after Beijing summoned the U.S. artificial-intelligence chip giant over national-security concerns.

The White House and both houses of U.S. Congress have proposed the idea of requiring U.S. chip firms to include location verification technology with their chips to prevent them f