Cryptocurrencies, Bitcoin for example, aren't linked directly to the laws, rules or regulations of any government, corporation or bank. The interest rates, fees and surcharges you may have to pay on your bank account or credit card in no way effect your cryptocurrency.
Digital currency affords its users complete anonymity.
Accounts that hold traditional currency can be garnished or frozen completely, the latter means the holder of the account has no access to the funds in it.