[erentz]

I think it's probably legal given he is a foreign national on foreign soil. (I'm not sure if there is anything in the laws that empower the NSA that limits their scope for what matters they investigate on, if so, they may have violated that. If not, there probably should be.)

A fairer question might be, why is the mission of the NSA to enforce copyright law for media companies? Shouldn't they be busy trying to hunt down terrorists, prevent attacks against the USA and it's people abroad, things like that?

[Taniwha]

No, he was a legal NZ resident, the law protected all residents equally

The GCSB was found to be illegally wiretapping him, sadly since that time the govt changed the law to make all that stuff legal. It's election year here in NZ if we want to change these laws we need to change the govt.