Possible Funding loophole: Online stockbrokers.

[Saien]

Most online stockbrokers allow you to setup your account as a checking account that you can write checkes against and both accept and receive electronic transfers.

Clearly, it wouldn't be a problem to fund these accounts as a US citizen, buying stocks isn't illegal.

Such a brokerage outside the US would likely remain blissfully uncaring, if not outright unaware, that any US customer of theirs would be barred from funding ewallets/casinos directly and honor any such transactions without hesitation.

The only question is: Are there any such online brokerages outside the US?