1. https://arstechnica.com/tech-policy/2016/06/smile-youre-in-t... 2. ...I'll try to find the link but recently watched a YouTube video of a government hearing on this where the senator or congressman was very unhappy about this situation.
The bigger thing there is the fact that a kind of well orchestrated "operation" took place is now proven, disclosed, and fully admitted by NZ officials. The info disclosed gives a lot of background on how US NSA solicits "favors" from other states and on what pretexts
There should be by definition very little overlap between the two. Law enforcement works nationally, where law applies; intelligence agencies can not work where law applies, because they would be in flagrant violation of it.
Who is "we" in this context? At least in the Germany I know most people actually call this "Gefahrenabwehr" (literally: danger prevention) or "Staatsschutz" and can't remember any historic event which has shown that this is a bad idea.
If right-wing terrorist join the party people call it "Nationalsozialistischer Untergrund" (National Socialist Underground) [0]
[0] https://en.m.wikipedia.org/wiki/National_Socialist_Undergrou...