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Nvidia CEO Jensen Huang is stepping down, leaving the AI industry without its biggest champion and clouding the future of the chipmaker, Korea Times reports. CFO Colette Kress, who joined the California-based chipmaker in 2013, is being brought in as interim CEO, according to Korea Times. The resignation follows a leadership crisis: Nvidia's board was reportedly preparing to oust Huang after he had two extramarital affairs, including one with a suspected Chinese spy, the Wall Street Journal reported, as cited by Korea Times. Huang admitted an affair with Alice Huang, a businesswoman suspected of working as a spy for the Chinese government, KBS World reports. Nvidia shed about $430 billion in market value over two sessions as the controversy escalated, Korea Times reports. U.S. President Donald Trump said former Apple CEO Tim Cook should replace Huang, calling Cook 'a legend,' Korea Times reports.