Hi, if you’re using MetaTrader4 than you should use a broker whose platform is also based on MT4. I only know one broker that does, CToptions. They accept US clients and have a very good trading platform, more importantly, one that is based on MT4.
If you use other brokers that trade using other platforms your MT4 analysis may be off a few seconds, which depending on what and how you trade might make a big difference.