We’ll see a lot of offshore options for US residents in the future.
Nothing illegal.
There’s not power on the earth to put limits on what a US citizen can do with offshore funds.
And gambling is legal, provided there are not involved US financial institutions.
On the Panama Offshore.
If you have not experience in the offshore world, Panama has a complex legislation (Panama foundation) which is used to hide all kind of legal and illegal activities.
Besides a professional advice, by all means you should avoid to wear hats like director, etc.
Not teaching business, but a first offshore experience with an own bank is like run a Formula one without drive license