The US reportedly approved Nvidia chip sales to Chinese firms that had empty offices and suspicious ties, according to recent reports. The approval raises concerns about potential loopholes in export control enforcement targeting China's access to advanced semiconductors. Nvidia ($NVDA) chips are subject to US export restrictions aimed at limiting China's ability to acquire high-performance computing hardware for AI and military applications. The reported approvals to entities lacking physical operations or legitimate business presence suggest possible regulatory gaps in the licensing process.