I won't trade futures either.
IB doesn't want to hear anyone's interpretation of the regs. They are the only broker I know that is doing this. If you want the low commissions, there will be other pitfalls.
IB screwed me in opening my corporate account. I got wire confirmation from my bank on Tues 11-27 for 100K. By Weds eve, I still had no funds in the acct. I called Thurs AM and they said "Nope, we haven't seen it - try back later". So I go back and forth with the bank and IB for several more days. Suddenly, Monday Dec 3rd the money shows in the IB acct with no explanation. I thought it was odd at the time but now it makes perfect sense.
I received no interest for December from IB, so I wrote the other day. The reply stated that you must have at least 10K cash available in your account EVERY SINGLE DAY OF THE MONTH to earn interest and since I opened my account on the 3rd, I would receive no interest for the month.
Now I understand.