This a BS addendum to a bill which was absolutely needed to give teeth to the laws governing the security of the united states. This portion of the bill will be contested for certain and probably out here on the left coast through the 9th circut court of appeals, the most liberal leaning circut court the US has.
I believe that internet gamblers will find a way around this probably through an offshore middle man bank.
I also think that not only will this be contested by the lobbysts for banks AND the large land based US casinos. Those casinos have wanted to legalize and regulate the online gaming industry because then they could come in with their established brands and create trustworthy online casinos and take a huge market share away from the offshore casinos. They would mush prefer to have gamblers who can wake up in the middle of the night in their own homes & drop a hundred bucks every few nights than force that player to have to drive or fly (spending gfambling money getting to their casinos) and see that player once a month or less. The other aspect as to why the large vegas casinos would want online gaming to pass in the US is that they can start to take back market share which they have lost to the tribal / indian casinos which are much more accessible to many players especially in demographically rich areas like California.
I think this is a bump in the road that so far has no teeth and will be contested on many fronts.
Liberals seeking office in 5 weeks should use this to their advantage to show how fractured the republicans are on this seriousness in attending to the issue of national security.