Conditional Orders

I found this notice in the API documentation:



Conditional Orders



Could someone explain this in plain english? It seems to me it is saying US accounts can't set Stops and Limits?????



=====================================================================

Close, Stop and Limit orders on individual trades for all United States based accounts are not functional as they are not compliant with the National Futures Association (NFA) Compliance Rule 2-43 (b).



Compliance Rule 2-43(b) requires that for all Unites States based accounts orders be executed First In, First Out (FIFO). FIFO requires that when multiple positions are held in the same currency pair, the position which was first opened will be the first to be closed. This will prevent stop-loss and limit orders from being placed on individual tickets (orders and positions) through ForexConnect API.