A more relevant precedent is the fate of Liberty Reserve. Its corporate officers, having never set foot in the US, were arrested in Spain, and their servers in Costa Rica were seized, and they were taken to Jew York to face money laundering charges, all because their website, which operated a web based currency without asking anyone for ID, was reachable from the US. Legally, it was declared that having a website that's reachable from the US is the same thing as doing business here, no matter where you or your servers are located, and regardless of citizenship.