[namesakes]

Who cares whether it's subpoena or warrant, thats not the point. The point is, you can't compel international company to break law in another country, f. ex. suppose chinese court would order (subpoena?) microsoft to hand over emails and pictures of a known political dissident, that are kept on US server, what the hell do you expect microsoft do? comply? stop doing business in any country that has laws that conflict those of US? It's _very_ easy to imagine such scenarios, in all areas really, patent law, finance, whatever. I think the only real solution is those MLATs, or international agreements on handing over data. Or maybe, in future, an international court, that could issue subpoenas valid in all member nations, when investigating crimes with similar enough laws in member nations.