The business ties between US President Donald Trump and Nvidia CEO Jensen Huang have come under renewed scrutiny, with the chipmaker's board launching an investigation into potential foreign intelligence links allegedly connected to China. Huang, a close ally of Trump since at least 2025, has repeatedly supported the administration's agenda and lobbied for access to China's AI market. The probe follows reports that Huang had a close relationship with a Chinese businesswoman believed to have passed information to Beijing. Senator Chris Coons has called for an investigation into potential national security concerns. Huang has enjoyed direct access to Trump, traveling with him on Air Force One and attending high-profile White House events. Nvidia's financial benefits from favorable Trump policies, such as the lifting of restrictions on AI chip exports, have also raised eyebrows. Trump described Huang as an "honorable guy" but declined to comment further on their relationship. The White House and Nvidia did not immediately respond to requests for comment.