By Courtney RozenWASHINGTON, July 20 (Reuters) - U.S. Center for AI Standards and Innovation Director Chris Fall has resigned just three ‌months after being appointed to lead the federal AI testing ‌institute at the Department of Commerce, a department spokesperson told Reuters, marking the latest ​shakeup in the Trump administration's plans on AI. Arvind Raman, who leads the Commerce Department office that oversees the AI testing institute, will step into Fall's role temporarily, the spokesperson said. Advertisement AdvertisementAdvertisement AdvertisementThe Commerce ⁠Department did not provide a reason for Fall's departure. The institute is responsible for working with leading AI labs such as Anthropic, Google's DeepMind and OpenAI to test ‌their unreleased models for vulnerabilities. adversaries to use AI to develop chemical or biological weapons, or corrupt the data used to train American AI models.