In the United States, the Securities and Exchange Commission and some state governments have made moves to regulate the trading of cryptocurrencies. Former SEC Chairman Harvey Pitt told CNBC last month that the commission was likely to make major regulatory changes to cryptocurrencies in 2018.
Although U.S. authorities arrested Jon E. Montroll, founder of BitFunder, a closed cryptocurrency exchange, accused him and his company of fraud. But this does not prevent people from buying bitcoins.