President Donald Trump signed an executive order on Thursday to promote the advancement of cryptocurrencies in the U.S. and to work toward potentially developing a national digital asset stockpile. Venture capitalist David Sacks, who Trump tapped as his crypto and artificial intelligence czar, joined Trump in the Oval Office for the signing of the order.The digital asset industry plays a crucial role in innovation and economic development in the United States, as well as our Nation’s international leadership,” the order states.