Subscribing to a signal with an US based Account

 
Hi All! If I link to a signal provider that is based in the UK or Canada with a US based account that does not allow Hedging and has first in first out limitations, how does that work? In most cases I have no way of knowing if the EA that I am subscribing to utilizes functions that are not allowed in the US. Should there not be notice given by the provider as to which accounts are needed to provide the same results? I really would love to have that explained. Thank you.
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