You say that as if it's new. International law 101 will teach you that countries claim jurisdiction on any business that happens within their borders, which mea

You say that as if it's new. International law 101 will teach you that countries claim jurisdiction on any business that happens within their borders, which means if any of the involved parties is within their borders at the time. In other words, your suggestion, claiming jurisdiction over business relationships between US-based US-citizens and foreign firms is no more than business as usual for the courts. This is not new, strange, or ... It's just that nobody "normal" ever sues because it is so expensive to do international cases, and so this is not all that well known outside of lawyers. The same goes, with variations (but not much variations), for any other country. Remember how Amazon got sued and convicted for selling "Mein Kampf" to a French guy and shipped it to France ? (note: Amazon's french branch does not sell that book, for obvious reasons, that did not help them. If you do that, and the french justice system comes after you, the US court system will let them extract a fine from you (though it won't let them throw you in jail, as would happen in France)).