I seek a USA broker for Forex that:
1. Accepts SierraChart as platform
2. Has Customer Support Hours: at least 24 hour 5 days, preferably Forex professional of
24 hours a day from Sunday 10am to Friday 5pm, Saturday from 9am to 5pm ET.

klutzy 

I seek a USA broker for Forex that: 1. Accepts SierraChart as platform 2. Has Customer Support Hours: at least 24 hour 5 days, preferably Forex professional of 24 hours a day from Sunday 10am to Friday 5pm, Saturday from 9am to 5pm ET.

I am trading FX at Interactive Brokers and I am happy with it. Support is good and 24 hours available. I works with Sierra.