[PeterisP]

It's not about miners but about the users/investors. If US investors - which make up a huge fraction of money bet on Bitcoin - are excluded, the value goes way down and makes it less attractive also to non-US investors; another major use case is remittances but if people remitting money from USA to their relatives in third world can't legitimately buy Bitcoin from their creditcard or bank account, then that makes it less useful as a money transfer vehicle.