I believe FinFx accepts U.S. residents. I too am a U.S. resident and have been wondering the same thing. I have heard very good things about them and I just emailed them to see if they allow autotrading via the FXSTAT platform. Will let you know.

http://www.earnforex.com/forex-brokers-us-traders/ , one list I found not sure how up to date it is. Allows also search filters. I don't think so on FinFx. US regulation only allows up to 1:50 leverage and it must use FIFO rules, both of which are not true on their details section. You do however want ECN/DMA, a broker who quotes to 5 places and passes the order direct to the banks and just takes a commission because you know you can execute on the raw market quotes. http://advancedmarketsfx.com/ -- although I don't think they allow automation (?) , DMA broker I've been monitoring their spreads by hitting http://www.advancedmarketsfx.com/forex.pl repeatedly, it's usually 0.9 pips average but I've seen 0.5 to 1.1 range depending on market (no news or anything); I have even seen negative spreads which is a good sign of true DMA brokers. Low volume trader will get about 0.39 pips commission. You want someone who at least can offer depth of market from the banks directly, even if you don't qualify for it. The other thing is some sites offer PAMM, like http://alpari-forex.com/en/investor/pamm4/pamm_account/rating/ , but then you realize the Alpari US doesn't offer PAMM anywhere (very frustrating). What I really want to find is US broker that directly operates with FXStat, so MT4 bridge isn't needed. What would be even better is to have signal provider managing funds with some US broker that I don't have to worry about latency + execution. The folks running these live accounts have enough to get the best account type like ECN, and the best execution for most while individually we might only have a crap micro account with high spreads. My other concern is that FXStat strategies may not follow the FIFO rules in the US, meaning the signals might not even be tradable on US brokers. Strategies with single entry followed by exit (TP or SL) should work however.

There is a very long list of brokers which r supported by fxstat. I think all borkers which offer mt4 accounts are supported by fxstat.

When u connect ur account with fxstat, it provides u a list of brokers which r supported by fxstat. 

There is difference between partners and supported brokers. If u open account with partners, u will not have to pay tradebook commission of autotrading. If u open an account with other brokers, u will have to pay commission.