I have heard that the United States is a world-leading bitcoin trade, but many commercial sites and ICO projects do not accept IP addresses from the United States. Although I'm not American, I still find it hard to understand because of this.
Because then they will be subject to the SEC and all the laws and regulations that come with this, as I said in my previous posts that should not be surprising at all there are many banks around the world that prefer to stop accepting US users than to have to deal with the US regulation, that should tell to us a lot about the US law.