Eric Trump, the second son of US president-elect Donald Trump and now executive vice-president of the Trump Organization, said a "sensible" set of regulatory guidelines could help the US become a cryptocurrency superpower. In an interview with CNBC's Dan Murphy in Abu Dhabi, Eric Trump said he has "been a big fan of cryptocurrency for a long time" and that his father plans to "make the United States the global cryptocurrency capital" upon his return to the White House.