D. Many sites use what are called affiliates. Persons who are affiliates and live inside the US will now be subject to arrest and prosecution, particularly those who do not block financial transactions from the US.
This next one is from a law professor:
[The greatest danger here would seem to be with affiliates. Any American operator can be easily grabbed. This includes sites that don’t directly take bets, but do refer visitors to gaming sites. If the affiliate is paid for those referrals by receiving a share of the money wagered or lost, it would not be difficult to charge the affiliate with violating this law, under the theory of aiding and abetting. Being a knowing accomplice and sharing in the proceeds of a crime make the aider and abettor guilty of the crime itself. The federal government could also charge the affiliate with conspiracy to violate this new Act.
I could be wrong, but I dont think any affiliate portal has the power or the facilities to accept or block financial transactions.
Many of us have mentioned the aiding and abetting, its a real threat; but many ways to combat it. At the end of the day if they want to come and get you they will.