Nvidia has said there is no backdoor risk. “Cybersecurity is critically important to us,” a company spokesman told The Wall Street Journal on Tuesday, reiterating that Nvidia chips don’t have backdoors.

Trump said Monday that he has cut a deal with chipmaker Nvidia, allowing it to sell certain artificial intelligence chips to China in exchange for a cut of the revenue, which would go to the U.S. government. Trump said he also negotiated a similar deal with chipmaker Advanced Micro Devices (AMD).