The fallout from the Nvidia scandal may test the fragile truce between the US and China, analysts say, as calls in Washington grow to tighten semiconductor export controls just days before US President Donald Trump is due to meet Chinese leader Xi Jinping in Shenzhen, China. “I think that [scandal] could have a bigger impact down the line during the meeting in Miami or even further down the line,” said Ilaria Mazzocco, a senior fellow at the Centre for Strategic and International Studies....