Correct. We're assuming you want to do things the right way and use an account in the U.S. and trade with your legal name.
Your other option is to open an IBC offshore, trade offshore, and use an offshore brokerage account. But I havn't been able to find an offshore brokerage that has reasonable commission fees. You wouldn't want to try anything sneaky and still use a U.S. brokerage. Of course if you use the 2nd method you would have to be extremely careful and would risk not being able to re-enter the U.S. if your passport expires. When you renew your passport, the one thing they for sure check is if your in trouble with the tax man. I have to do some more checking on the 76,000 income exclusion. I know you can be a U.S. citizen and must be a resident of an offshore Country, but I'm not to sure if the income must come from a place other then U.S.