US President Donald Trump’s eldest son warned against investing in China during an event for investors on Thursday in Zurich, even as his father’s administration has pushed forward on plans to improve commercial ties between the two countries. “I wouldn’t,” Donald Trump Jnr said when asked at the invitation-only event if he would invest in China. “I don’t think we can pretend they’re an ally. That would be, I think, foolish.” Trump Jnr, who shares the position of executive vice-president of the.