I would suggest ACR, but I can't imagine they would sponsor us in any way shape or form. Maybe I'll fire off a support ticket. Pitch it as an idea to advertise on the forum and bring in more BTC poker players. Worth a shot. I believe they are accessible to most of the world, and I've never had any issues with my crypto deposits.
i've tried it before, pitching that exact angle. they ignored me on multiple attempts, but maybe their attitude has changed since january or february when i last contacted them.
i noticed they added a way to make your own private tournaments recently:
https://www.americascardroom.eu/online-poker-promotions/private-online-poker-tournament/unfortunately, buy-ins are locked at $1.65. weird!

if we wanted to run home games on stars, we could technically do it for play money and pony up p2p with bitcoin. that way, USA players (and anyone else from prohibited jurisdictions) could play too. someone would have to act as escrow.