It would be extremely helpful if there were a chapter in the software documentation or a "helpful hints" guide that discussed using EAS and FSB Pro as USA-based traders.

Another possible Portfolio combination is: GBPUSD, EURUSD, EURGBP

MT5 uses Netting account for hedging.

Long time ago you mentioned that you would like to create some function whereby the EA will calculate the over (net) effect of the positions of the Portfolio.

You can consider using the same method that MT5 is using, ie. Netting effect whereby if the over Net position is Long, open a position according to the lot size on Long.

Eg, out of 300 EA trading at 1 lot size.  200 are Long and 100 are short, overall the Net position would be 100 Long, so open 100 lot size long.  If and when some trades supposed to close, the net effect would either increase the lot size of the Long or decrease the long size of the short.  If by any chance the direction has changed, ie. 100 Long and 200 Short, then close the Long position and open a Short position.

So if EAS can create an option whereby users can choose "Use Netting Effect" = True/False

Then EAS can cater to US citizen or some Prop firm that uses MT5

There are work arounds. Multiple accounts. An account for shorts and an account for longs. Place the portfolio bot on a demo platform of an offshore broker and then copy the trades to your US acct.

Not ideal.

Or use an offshore broker. There are a few good ones.

The problem is the FIFO rule. When several strategies open positions, they must close in the same order. However,  we cannot do it because it will break the trading logic.

Is it possible to trade the portfolio (a bindle of EAs) generated by EA Studio in USA-based brokers?