The US has a history of more aggressively enforcing securities (investment) laws and many ICOs prohibit US investors. They likely feel this reduces their legal risks (whether or to what degree this is actually the case is not known with certainty by anyone, but nevertheless the practice is common).
The US has a history of more aggressively enforcing securities (investment) laws and many ICOs prohibit US investors. They likely feel this reduces their legal risks (whether or to what degree this is actually the case is not known with certainty by anyone, but nevertheless the practice is common).
Legal issues I guess.