Yes. The law cares about where you have a "presence". Since the exchange is headquartered in the US and you send your orders there, you are doing business in the US, making you subject to US laws.
The law wants, amongst other things, justice for victims. So when your victims are in some country, expect to be tried there.
The law wants, amongst other things, justice for victims. So when your victims are in some country, expect to be tried there.