It is simply the result of the strict Overnight Millionaire Review regulations placed on these products by the United States authorities. This is somewhat surprising as it was the Chicago Board of Exchange which first sanctioned the use of this product as a legitimate investment vehicle back in 2008.
While this restriction has been placed on Forex options, traders in the US can still use them to trade market Indices and Stocks. It is however still possible for traders resident in the United States to trade on the foreign exchange markets with these contracts. They are able to do so by registering with a brokerage that is based outside of the United States.
Brokers in other parts of the world are not governed by such restrictions and there truly global clientele is able to benefit from the wide range of products they are offer.However as a fairly new product there are many questions raised by binary options regulation. Many authorities are unsure how this product should be regulated.