How Trump and Nvidia’s C.E.O. Became Partners on the International Stage

At a summit in South Korea last month, President Trump halted a speech he was giving about how he was doing more than any other president ever to build data centers and employ American workers, and asked about a new friend. “Jensen, who’s an incredible guy, he might be here,” Mr. Trump said of Jensen Huang, the chief executive of the chip maker Nvidia. “I don’t even know. Is Jensen here? I think he’s around. Somebody said he’s here. How is he? Pretty good, right?” Speaking at a conference in Washington within hours of Mr. Trump, Mr. Huang also had…