That's what I understand. But why could they go to the FISC? This means to me, they can do foreign surveillance _legally_. The German equivalent, the BKA, could

That's what I understand. But why could they go to the FISC? This means to me, they can do foreign surveillance _legally_. The German equivalent, the BKA, could of course do foreign surveillance as well. However they can't get an official approval to do so (that's task of the BND). It'd be outright illegal.