Australian resident. Have opened an account, as a corporation with ThinkOrSwim in 2003. No problems. Took about 1 weeks. Some time ago though.
Opened an account, as a corporation with Interactive Brokers about a month ago. No problems. Took about 2 weeks. Admin staff seem not so bright. Worked...
CME symbol "ES" -- S&P 500 e-mini index futes ..
Deep n liquid 23.5 hours / day, 6-ish days a week.
Nice tight spread too. [* If you don't know what that means, then stick to CFDs...]