America is the land of opportunity, so long as you don't happen to be a cryptocurrency exchange. For several years now, a number of prominent exchanges have opted not to serve U.S. citizens; in fact, the list of trading platforms avoiding the U.S. is still growing, with Bancor recently announcing that it would block U.S. citizens from using its website to convert tokens.
As can be guessed, regulation — or rather, the lack of clear regulation — is the main reason why crypto exchanges are increasingly shying away from the U.S. Exchanges complain about the uncertainty of U.S. securities legislation, about the failure of legislators to respond quickly enough to the rise of crypto with corresponding laws, and about how the lack of a transparent regulatory framework is putting America's domestic cryptocurrency industry at a competitive disadvantage.