The recent lunatic onling gaming bill thrust into the completely unrelated Port Security legislation may have a silver lining. Turns out that banks that don't currently have the means to track these transactions won't have to enforce it, and that bank to bank transactions (like say, sending your money to a third party like NetTeller, which is widely used in the online poker world) wouldn't be covered.
So what it basically sounds like is that the banks are saying, "eh, so what" and that's going to leave loopholes.
Now I'm starting to get cynical - I'm thinking that they put in this unenforceable law so that they can look like they are accomplishing something to their "base", but still get their campaign contributions from their buddies who are making the money.
Regardless, the whole thing is the epidome of how lawmaking is NOT supposed to work.