Justin Sun’s Path From Crypto Pariah to Trump Family’s Moneyman

After descending the stairs from his Airbus A330, the Chinese-born crypto billionaire Justin Sun bent down and placed a palm on the Los Angeles tarmac, as if to prove to himself he’d really reached the US. Then he stood and threw a celebratory fist in the air. It was May 16, and the cross-country victory tour of President Donald Trump’s biggest crypto benefactor was just beginning.

Sun’s excitement was understandable. For years he hadn’t set foot in the US amid federal investigations that could have ruined his business. Now, after buying more than $90 million worth of two of the ...