The Cryptocurrency Enforcement Framework issued by the U.S. Department of Justice stipulates a number of cases where it will exert its authority over foreign actors: “where virtual asset transactions touch financial, data storage, or other computer systems within the United States”, if they use cryptocurrency to import illegal products into the U.S. and if they “provide illicit services to defraud or steal from U.S. residents”. This also applies to foreign entities that engage in money transmission in the country even if they are incorporated abroad.
Additionally, the Department claims to have the authority to prosecute any foreign actors who use cryptocurrency to support terrorist activities:
Fusion Media or anyone involved with Fusion Media will not accept any liability for loss or damage as a result of reliance on the information including data, quotes, charts and buy/sell signals contained within this website. Please be fully informed regarding the risks and costs associated with trading the financial markets, it is one of the riskiest investment forms possible.