One of my small accounts is traded with IB where I experiment with certain option complex strategies. Few weeks ago incidentally I close few trades during the day which resulted in freezing my account for five days ("day trading pattern"). Since then I have not been placing any day trade transactions. Today I have found out that I am not able to open new positions again, including hedging trades which I want to place to protect my position. This time account is frozen for 90 days (!) due to new SEC regulations and the way how IB implemented this. 1. I wonder what happens with whole business philosophy in US ? Why new regulations apply to the past ? 2. While no notification from IB was given, is it possible to conduct business in US like this ? 3. And the last questions - why to trade in US markets when both Brokers and Regulators treat traders like slaves ? Is it only my impression that whole business ethics in US has been slowly sliding down through recent years ?