For the Trading Signals results for the automatic copying, do they include spreads & or commissions?
Were or with whom can US citizen trade these signals with greater than 1: 50 leverage?
Are there any US citizens trading these signals now?
Are there a special requirements for US citizen if we do trade these signals?
Would the results be the same or even profitable if I traded the signals with 1:50 leverage?
Only a few brokers accept US citizens and those who are, allow up to 1:50 leverage and apply the FIFO rule.
If you copy a signal with larger leverage you will open smaller trades than the signal provider (smaller leverage decreases copy ratio) and also only a handful of signals obbey the FIFO rule.
So all in all, yes you can copy MQL5 signals but you must choose carefully (as with all signals, I suppose).