You may not be able to tariff a service effectively, but you sure can retaliate anyway (especially in a state-controlled media environment like China).

You can't. You could tax films being made abroad SOMEHOW, but it wouldn't be a tariff. It would end up being a penalty of some kind on money being sent abroad, which used to be a popular way to turn your country's currency into toilet paper.

That's a good question. Only way I can think of is to have a law passed requiring any contract signed with a US provider to be registered with the gov for the extra taxation. But that seems hard to enforce.

I think it's not even that difficult, most countries do VAT, so you would hit them with the tariffs when they include the service on their filing.

Monitoring private Internet cables, especially at submarine landing points? www.atlanticcouncil.org/in-depth-res...